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  Subjects -> ELECTRONICS (Total: 186 journals)
Showing 1 - 200 of 277 Journals sorted alphabetically
Acta Electronica Malaysia     Open Access  
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 6)
Advances in Electronics     Open Access   (Followers: 90)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Power Electronics     Open Access   (Followers: 35)
Advancing Microelectronics     Hybrid Journal  
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 331)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 26)
Annals of Telecommunications     Hybrid Journal   (Followers: 9)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 9)
Archives of Electrical Engineering     Open Access   (Followers: 14)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 8)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 29)
Bioelectronics in Medicine     Hybrid Journal  
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 19)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 38)
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 6)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 13)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 1)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access   (Followers: 1)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 47)
China Communications     Full-text available via subscription   (Followers: 9)
Chinese Journal of Electronics     Hybrid Journal  
Circuits and Systems     Open Access   (Followers: 15)
Consumer Electronics Times     Open Access   (Followers: 5)
Control Systems     Hybrid Journal   (Followers: 288)
ECTI Transactions on Computer and Information Technology (ECTI-CIT)     Open Access  
ECTI Transactions on Electrical Engineering, Electronics, and Communications     Open Access  
Edu Elektrika Journal     Open Access   (Followers: 1)
Electrica     Open Access  
Electronic Design     Partially Free   (Followers: 117)
Electronic Markets     Hybrid Journal   (Followers: 7)
Electronic Materials Letters     Hybrid Journal   (Followers: 4)
Electronics     Open Access   (Followers: 97)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 10)
Electronics For You     Partially Free   (Followers: 100)
Electronics Letters     Hybrid Journal   (Followers: 26)
Elkha : Jurnal Teknik Elektro     Open Access  
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 55)
Energy Harvesting and Systems     Hybrid Journal   (Followers: 4)
Energy Storage Materials     Full-text available via subscription   (Followers: 3)
EPJ Quantum Technology     Open Access   (Followers: 1)
EURASIP Journal on Embedded Systems     Open Access   (Followers: 11)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Signal Processing     Full-text available via subscription   (Followers: 10)
Frequenz     Hybrid Journal   (Followers: 1)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 1)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 203)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 4)
IACR Transactions on Symmetric Cryptology     Open Access  
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 99)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 80)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 49)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 9)
IEEE Journal on Exploratory Solid-State Computational Devices and Circuits     Hybrid Journal   (Followers: 1)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 72)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 71)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 58)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 26)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 42)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 19)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 26)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 76)
IEEE Transactions on Signal and Information Processing over Networks     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 5)
IET Cyber-Physical Systems : Theory & Applications     Open Access   (Followers: 1)
IET Energy Systems Integration     Open Access  
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 35)
IET Nanodielectrics     Open Access  
IET Power Electronics     Hybrid Journal   (Followers: 52)
IET Smart Grid     Open Access  
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 18)
IETE Journal of Education     Open Access   (Followers: 4)
IETE Journal of Research     Open Access   (Followers: 11)
IETE Technical Review     Open Access   (Followers: 13)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access   (Followers: 3)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 70)
Industrial Technology Research Journal Phranakhon Rajabhat University     Open Access  
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 35)
Informatik-Spektrum     Hybrid Journal   (Followers: 2)
Instabilities in Silicon Devices     Full-text available via subscription   (Followers: 1)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 13)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 18)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 10)
International Journal of Antennas and Propagation     Open Access   (Followers: 11)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 4)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 6)
International Journal of Control     Hybrid Journal   (Followers: 11)
International Journal of Electronics     Hybrid Journal   (Followers: 7)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 13)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 3)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Hybrid Intelligence     Hybrid Journal  
International Journal of Image, Graphics and Signal Processing     Open Access   (Followers: 15)
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 8)
International Journal of Nanoscience     Hybrid Journal   (Followers: 1)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 4)
International Journal of Power Electronics     Hybrid Journal   (Followers: 25)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 4)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 10)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 4)
International Journal of Wireless and Microwave Technologies     Open Access   (Followers: 6)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
JAREE (Journal on Advanced Research in Electrical Engineering)     Open Access  
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 3)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 11)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 4)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription   (Followers: 1)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 32)
Journal of Electrical Bioimpedance     Open Access  
Journal of Electrical Bioimpedance     Open Access   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 7)
Journal of Electrical, Electronics and Informatics     Open Access  
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 7)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 8)
Journal of Electronic Design Technology     Full-text available via subscription   (Followers: 6)
Journal of Electronics (China)     Hybrid Journal   (Followers: 5)
Journal of Energy Storage     Full-text available via subscription   (Followers: 4)
Journal of Engineered Fibers and Fabrics     Open Access   (Followers: 2)
Journal of Field Robotics     Hybrid Journal   (Followers: 3)
Journal of Guidance, Control, and Dynamics     Hybrid Journal   (Followers: 170)
Journal of Information and Telecommunication     Open Access   (Followers: 1)
Journal of Intelligent Procedures in Electrical Technology     Open Access   (Followers: 3)
Journal of Low Power Electronics     Full-text available via subscription   (Followers: 7)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 10)
Journal of Microelectronics and Electronic Packaging     Hybrid Journal  
Journal of Microwave Power and Electromagnetic Energy     Hybrid Journal  
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 10)
Journal of Nuclear Cardiology     Hybrid Journal  
Journal of Optoelectronics Engineering     Open Access   (Followers: 4)
Journal of Physics B: Atomic, Molecular and Optical Physics     Hybrid Journal   (Followers: 29)
Journal of Power Electronics & Power Systems     Full-text available via subscription   (Followers: 11)
Journal of Semiconductors     Full-text available via subscription   (Followers: 5)
Journal of Sensors     Open Access   (Followers: 26)
Journal of Signal and Information Processing     Open Access   (Followers: 9)
Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer     Open Access  
Jurnal Rekayasa Elektrika     Open Access  
Jurnal Teknik Elektro     Open Access  
Jurnal Teknologi Elektro     Open Access  
Kinetik : Game Technology, Information System, Computer Network, Computing, Electronics, and Control     Open Access  
Learning Technologies, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Magnetics Letters, IEEE     Hybrid Journal   (Followers: 7)
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 2)
Metrology and Measurement Systems     Open Access   (Followers: 5)
Microelectronics and Solid State Electronics     Open Access   (Followers: 26)
Nanotechnology Magazine, IEEE     Full-text available via subscription   (Followers: 41)
Nanotechnology, Science and Applications     Open Access   (Followers: 6)
Nature Electronics     Hybrid Journal   (Followers: 1)
Networks: an International Journal     Hybrid Journal   (Followers: 5)
Open Electrical & Electronic Engineering Journal     Open Access  
Open Journal of Antennas and Propagation     Open Access   (Followers: 9)
Optical Communications and Networking, IEEE/OSA Journal of     Full-text available via subscription   (Followers: 15)
Paladyn. Journal of Behavioral Robotics     Open Access   (Followers: 1)
Power Electronics and Drives     Open Access   (Followers: 1)
Problemy Peredachi Informatsii     Full-text available via subscription  
Progress in Quantum Electronics     Full-text available via subscription   (Followers: 7)
Pulse     Full-text available via subscription   (Followers: 5)
Radiophysics and Quantum Electronics     Hybrid Journal   (Followers: 2)
Recent Advances in Communications and Networking Technology     Hybrid Journal   (Followers: 3)
Recent Advances in Electrical & Electronic Engineering     Hybrid Journal   (Followers: 9)
Research & Reviews : Journal of Embedded System & Applications     Full-text available via subscription   (Followers: 5)
Revue Méditerranéenne des Télécommunications     Open Access  
Security and Communication Networks     Hybrid Journal   (Followers: 2)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 56)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Services Computing, IEEE Transactions on     Hybrid Journal   (Followers: 4)
Software Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 78)
Solid State Electronics Letters     Open Access  
Solid-State Circuits Magazine, IEEE     Hybrid Journal   (Followers: 13)
Solid-State Electronics     Hybrid Journal   (Followers: 9)
Superconductor Science and Technology     Hybrid Journal   (Followers: 3)
Synthesis Lectures on Power Electronics     Full-text available via subscription   (Followers: 3)
Technical Report Electronics and Computer Engineering     Open Access  
TELE     Open Access  
Telematique     Open Access  
TELKOMNIKA (Telecommunication, Computing, Electronics and Control)     Open Access   (Followers: 9)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 6)
Ural Radio Engineering Journal     Open Access  
Visión Electrónica : algo más que un estado sólido     Open Access   (Followers: 1)
Wireless and Mobile Technologies     Open Access   (Followers: 6)
Wireless Power Transfer     Full-text available via subscription   (Followers: 4)
Women in Engineering Magazine, IEEE     Full-text available via subscription   (Followers: 11)
Електротехніка і Електромеханіка     Open Access  

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Similar Journals
Journal Cover
IET Power Electronics
Journal Prestige (SJR): 0.803
Citation Impact (citeScore): 3
Number of Followers: 52  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1755-4535 - ISSN (Online) 1755-4543
Published by IET Homepage  [44 journals]
  • Pulsed power load effect mitigation in DC shipboard microgrids: a
           constrained model predictive approach
    • Authors: Navid Vafamand;Mohammad Mehdi Mardani;Mohammad Hassan Khooban;Frede Blaabjerg;Jalil Boudjadar;
      Pages: 2155 - 2160
      Abstract: This paper proposes a novel model predictive controller to minimise the effect of unknown pulsed loads on the DC microgrid (MG) side of shipboards. It is assumed that the level of the pulsed power loads (PPLs) is not determined in prior for which the authors propose a novel non-linear power observer. By employing the so-called freezing technique, a novel model predictive scheme is utilised to optimally stabilise the overall DC shipboard MG. Furthermore, different constraints on the current of the DC source and the energy storage system (ESS) are considered in the predictive controller to make it more realistic and practical. Compared to the exiting results, the proposed approach can optimally design the injecting current of the ESS so that the practical and physical constraints of the DC MG are also satisfied, which improves the effectiveness and robustness of the proposed controller. To show the merits of the proposed approach, it is tested on a DC MG that feeds one PPL. Real-time model-in-the-loop (MiL) results show the performance improvements in the transient and steady-state obtained by the proposed control method compared to the state-of-the-art methods.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Permanent magnet synchronous machine demagnetisation prevention and torque
           estimation control considering rotor temperature
    • Authors: Luka Uršič;Mitja Nemec;
      Pages: 2161 - 2169
      Abstract: The article presents complete permanent magnet management solution for a PMSM drive. The temperature of permanent magnets is obtained with a modified flux observer. With this available data, more precise torque estimation is possible. Furthermore the temperature information along with machine currents is fed to full demagnetisation model of permanent magnets in order to obtain their state. This information is then used to limit the applied reverse field in order to prevent the demagnetisation. The algorithm has been tested with simulations as well experimentally and the results show successful prevention of demagnetisation.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Comparative study of multi-objective finite set predictive control methods
           with new max–min strategy applied on a seven-level packed U-cell
           inverter
    • Authors: Seyed Mehdi Abedi Pahnehkolaei;Hani Vahedi;Alireza Alfi;Kamal Al-Haddad;
      Pages: 2170 - 2178
      Abstract: This article studies the design and implementation of multi-objective predictive control (MO-PC) of a grid-connected seven-level packed U-cell (PUC7) inverter for minimising the line current total harmonic distortion (THD) and capacitor voltage error simultaneously. The weighting factor method is usually used as a simple method for solving the control problem in the literature. However, there are some difficulties and shortcomings in the calculation of weighting factors. Here, max–min selection strategy with together priority is adopted to reduce these deficiencies and improves the system performance. The switch model of the PUC inverter is derived and then applied in designing the MO-PC for grid-connected applications, where a controlled active or reactive power is injected into the utility. A comparative study among three strategies of weighting factor, fuzzy decision-making and max–min selection is performed to distinguish the proposed method superiority. Experimental results are given to validate the practicality of the applied controller in regulating the line current and capacitor voltage of the grid-connected PUC7 inverter.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Series-connected single-phase MMC for multi-phase PMSG with DC grid
    • Authors: Fei Rong;Wenlong Sun;Shijia Zhou;Shoudao Huang;
      Pages: 2179 - 2188
      Abstract: A topology for six series-connected single-phase modular multilevel converters (MMCs) for multi-phase permanent-magnet synchronous generator (PMSG) wind power systems is proposed to deliver wind power to a medium-voltage DC (MVDC) grid. The AC side of each MMC is connected to one phase of the multi-phase PMSG. The DC sides of the MMCs are connected in series to obtain a medium-level DC voltage. The maximum power point tracking (MPPT) and grid-connected control methods are discussed in detail. The high-frequency voltage injection circuit is designed to suppress the voltage fluctuations of the sub-module capacitor. Further, the nearest-level and pulse width modulation (NL-PWM) based on the sampling value is proposed to suppress the harmonics of the stator current. The proposed topology exhibits low costs, a high efficiency, and a high boost ratio without an additional step-up DC/DC converter or transformer. The constructed simulation model verifies the validity of the proposed topology. Moreover, the experimental results are assessed with RT-Lab.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Application of artificial neural networks for transistor open-circuit
           fault diagnosis in three-phase rectifiers
    • Authors: Piotr Sobanski;Marcin Kaminski;
      Pages: 2189 - 2200
      Abstract: This study deals with the transistor open-circuit fault diagnosis technique based on the grid current processing. In accordance with the proposed method, in the first stage, the defect of the power electronics converter is recognised. For this purpose, the zero current periods are registered in each converter phase circuits. The faulty transistors are identified calculating the average values of differences between predicted and measured phase currents. The novelty of the presented technique is an application of a neural network for the grid current prediction in the active rectifier. In fact, the transistor open-circuit faults do not affect the predicted grid currents immediately as soon as the transistor defects happen. Therefore, the differences between the predicted currents and the measured ones increase which are used for the faulty transistors identification. In the comparison to the switch open-circuit fault diagnostic techniques, which are known from the scientific literature survey, the method presented in this study is insensitive to load changes no matter a direction of the energy flow in the power conversion system.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Ultra-high step-up two-input DC–DC converter with lower switching
           losses
    • Authors: Parham Mohseni;Seyed Hossein Hosseini;Mohammad Maalandish;Mehran Sabahi;
      Pages: 2201 - 2213
      Abstract: In this study, a novel isolated ultra-high step-up two-input DC–DC converter with low-voltage stress across semiconductors is presented. In the proposed converter, outputs are isolated from the inputs by a high-frequency transformer and the leakage inductance of the transformer is used to soft switching (zero-current switching) of the power switches when they are turned-on and alleviate the reverse recovery problems of the diodes. This converter can be operated as an interleaved single-input converter with a 180° phase shift. The converter benefits from the advantages of both the conventional boost converter and diode-capacitor voltage multiplier (VM) stages. The primary side of the transformer consists of two-input cells based on the conventional boost converter and the secondary side consists of diode-capacitor VM stages which are used to increase the voltage gain and decrease the nominal voltage stress across semiconductors. To confirm the converter performance, the mathematical analysis and simulation result are presented, in addition, the comparison between the proposed converter and other converters which are presented in recent studies is presented. An experimental prototype 410 V/280 W of the converter with 40 and 45 V input voltages is provided to illustrate the correct operation of the presented converter.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • $R^2P^2$ R 2 P 2 +and+voltage+multiplier+cells+for+PV+applications&rft.title=IET+Power+Electronics&rft.issn=1755-4535&rft.date=2019&rft.volume=12&rft.spage=2214&rft.epage=2223&rft.aulast=Martins;&rft.aufirst=Tiago&rft.au=Tiago+Miguel+Klein+Faistel;Carlos+Henrique+Illa+Font;António+Manuel+Santos+Spencer+Andrade;Mário+Lúcio+da+Silva+Martins;">Modelling and control of DC–DC Ćuk converter with $R^2P^2$ R 2 P 2
           and voltage multiplier cells for PV applications
    • Authors: Tiago Miguel Klein Faistel;Carlos Henrique Illa Font;António Manuel Santos Spencer Andrade;Mário Lúcio da Silva Martins;
      Pages: 2214 - 2223
      Abstract: This study proposes the modelling and control of a Ćuk converter with reduced redundant power processing $left({R^2P^2} right)$R2P2 and voltage multiplier for photovoltaic (PV) applications. The converter makes use of a perturb & observe algorithm to extract the maximum power of a single PV panel. The proposed converter is derived from the association of the $R^2P^2$R2P2 and voltage multiplier cells in order to achieve the high step-up voltage gain. This association allows a high-voltage gain, low-voltage and current stresses on the semiconductors. Experimental results are presented to validate the proposal a prototype with the input of 37.4 V, output voltage of 400 V and rated input power of 200 W.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Differential evolution-based pulse-width modulation technique for
           multiphase MC
    • Authors: Mohammad Ali;Atif Iqbal;Mohd Anas Anees;Mohd Rizwan Khan;Khaliqur Rahman;Mohammad Ayyub;
      Pages: 2224 - 2235
      Abstract: This paper addresses multiphase matrix converter (MPMCs) modulated with Venturini's classical scalar approach. The solution to obtain time-varying modulation functions was limited to $3 times 3$3×3 configuration, which was later extended to $3 times n$3×n configuration. The equations had four constants that were common to all modulation functions; out of which two were defined arbitrarily and other two were found analytically by reducing the equation to a two-variable optimisation problem. However, in this work, an attempt is made to provide flexibility in finding other solutions by taking all the constants as variables. Thus, Differential Evolution (DE) algorithm is adopted in the proposed modulation approach to solve the complex equations thus obtained. Another aim is to find the solution for the MPMC, where inputs are more than three. It is found that the optimal solutions exist only for $3 times n$3×n configuration and are in close approximation with the results of analytical approach. Other solutions were found for certain input and output frequencies and voltage transfer ratios whose results are discussed. It is also found that the solution does not exist for configuration- with input phases are other than three. The discussion is supported by simulation and experimental results on a $3 times 7$3×7 matrix converter at various values of voltage transfer ratios and input/output frequencies.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Comparison among different analysis methodologies for LLC resonant
           converter
    • Authors: Yuqi Wei;Quanming Luo;Si Chen;Pengju Sun;Necmi Altin;
      Pages: 2236 - 2244
      Abstract: The LLC resonant converters have been widely used in many applications due to their features such as wide input voltage range, high efficiency, and high power density. Therefore, the analysis methodology for the LLC resonant converter is of great importance. Based on the existing literature, there are mainly four analysis methodologies: (i) fundamental harmonic analysis; (ii) frequency domain with time domain partial correction; (iii) frequency domain with time domain complete correction; (iv) time domain analysis or operation mode-based analysis. However, there is no systematic view and study on different LLC analysis methodologies. Therefore, the main purpose and contribution of this study are to make a comprehensive study and comparison of these analysis methodologies and to provide guidance on analysing and designing of the LLC resonant converter to the readers. In this study, the principles of these four analysis methodologies are introduced briefly. Then, by introducing gain error and peak gain frequency error as definitions, comprehensive comparison studies on these four different methodologies for different conditions are implemented. Recommended applications for each methodology are summarised; finally, an experimental prototype is built to verify the theoretical analysis, and a conclusion is drawn.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Implementation of a common grounded Z-source DC–DC converter with
           improved operation factors
    • Authors: Sajad Rostami;Vahid Abbasi;Frede Blaabjerg;
      Pages: 2245 - 2255
      Abstract: This study proposes a common grounded Z-source DC–DC converter. In comparison with a conventional Z-source converter, it converts voltage with higher voltage gain and lower voltage stress on the switch and diodes that means an improvement in efficiency. In addition, increasing the duty cycle reduces its output voltage ripple percentage that improves its operation quality. The converter is analysed and compared with other converters. Its main equations are obtained, which show the converter advantages as lower voltage stress, smaller inductors and higher voltage gain in comparison with the reviewed converters. A prototype for the proposed converter is prepared based on analysis and theoretical parts. Experiments are done along with the analysis. Experimental results and theoretical equations are used to show the converter advantages.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Operation of the full-bridge three-level DC–DC converter in
           unbalanced bipolar DC microgrids
    • Authors: Giel Van den Broeck;Jef Beerten;Mauricio Dalla Vecchia;Simon Ravyts;Johan Driesen;
      Pages: 2256 - 2265
      Abstract: As compared to two-wire, unipolar DC microgrids (DCμGs), bipolar DCμGs apply a positive, neutral and negative conductor to increase the power transfer capability while retaining two voltage levels for supplying low- and high-power devices at an appropriate voltage. However, connecting devices between the positive or negative pole and the neutral conductor will result in unbalanced currents causing voltage to unbalance. Therefore, power electronic converters with voltage balancing capability are essential. Instead of installing dedicated voltage balancing converters, this study proposes to apply three-level DC–DC converters. These converters can interface battery storage with bipolar DCμGs and balance the pole-to-neutral voltages at the same time. However, high levels of unbalanced currents drive three-level DC–DC converters towards their theoretical unbalanced operating limits. To derive these, a method is presented which decomposes the governing equations in balanced and unbalanced components. Although the method is generally applicable to the three-level converters, the full-bridge three-level converter serves as a comprehensive example. The method enables to derive the unbalanced operating area of three-level DC–DC converters and to appropriately size the filter inductor. Furthermore, a novel modulation strategy is introduced in order to lower the inductor current ripple in unbalanced conditions, supported by experimental results.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Improved two-stage boost inverter with integrated control strategy
    • Authors: Feng Hong;Peng Zhu;Baojian Ji;
      Pages: 2266 - 2275
      Abstract: In this study, an integrated control strategy is proposed which can be widely used in two-stage boost inverters, and an improved two-stage boost inverter is taken as an example to present the proposed integrated control idea. The presented inverter can operate in four quadrants, which can realise grid-connected or stand-alone inverter. With improved control strategy, it not only can reduce the number of switching times and improve the efficiency but also can reduce the harmonic contents of bridge arm voltage and further decrease the volume and weight of the filter. Therefore, the presented inverter still has the advantages in efficiency and volume when compared with single-stage boost inverters. The operating principle, harmonic analysis, simulation and experiments are provided in this study. A 500 W prototype is established and tested, and the results of simulation and experiments verify the correctness of the theoretical analysis.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Dual input superboost DC–DC converter for solar powered electric
           vehicle
    • Authors: Gangavarapu Guru Kumar;Kumaravel Sundaramoorthy;Sivaprasad Athikkal;Venkitusamy Karthikeyan;
      Pages: 2276 - 2284
      Abstract: The electric vehicle (EV) is becoming a more attractive solution to avoid fossil fuel usages in India. In the commercial EV, the solar PV charges the battery and simultaneously the battery drives the vehicle. Due to the structure of conventional buck-boost bidirectional DC–DC converter, the solar PV power becomes underutilised when the battery state of charge (SOC) reaches its optimal value. In order to overcome this limitation, this study proposes a novel dual input superboost (DISB) DC–DC converter for solar-powered EVs. The proposed converter effectively utilises the solar PV power by operating in six different modes. Also, it has the advantages of wide range of speed control and reduces the number of conduction devices in each mode, thereby enhancing the efficiency. This study presents detailed operating waveforms and dynamic analysis of the proposed DISB DC–DC converter. Furthermore, the operation and performance of proposed converter under six different modes are validated through simulation and confirmed with an experimental investigation.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Series input multiple outputs flyback auxiliary power supply for input
           series–output parallel/input series–output series system
    • Authors: Jie Yang;Zhijie Zhang;Ke Sun;Wei Yang;Shiyan Yang;Fei Li;Yu Yao;
      Pages: 2285 - 2294
      Abstract: A novel series input multiple outputs modular auxiliary power supply and its control strategy are proposed and investigated in this study. It adopts series input multiple outputs connection mode, where multiple auxiliary power modules are connected in series at the input side while they are independent at the output side. This auxiliary power supply can provide power for the control and drive circuits of the power modules in the input series modular system. To ensure input voltage sharing (IVS) between each module, a novel control strategy called master–slave peak current mode control strategy is proposed. With this control strategy, not only IVS can be achieved without any external central controller, but also the output controller and the IVS controller can be decoupled from each other when the system is running in discontinuous conduction mode. The stability of the control strategy is analysed, the effectiveness of the system is discussed and the design process of the controller is given. A two-module auxiliary power supply system prototype is fabricated and tested. The experimental results verify the effectiveness of the proposed system scheme and control strategy.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Optimised power control and balance scheme for the output parallel
           dual-active-bridge DC-DC converters in power electronic traction
           transformer
    • Authors: Feng An;Wensheng Song;Kexin Yang;Shucong Luo;Xiaoyun Feng;
      Pages: 2295 - 2303
      Abstract: In order to achieve a comprehensive performance optimisation consisting of transmission power balance, high efficiency, and fast dynamic response for the output parallel dual-active-bridge (DAB) dc–dc converters in power electronic traction transformer, an optimised power control and balance scheme based on extended phase-shift (OPCB-EPS) control is proposed in this study. By combining current stress-optimised calculation with EPS control, the current stress of converters can be reduced significantly and the efficiency can be further improved. In addition, the desired transmission power of DAB converters is estimated on-line by introducing the virtual voltage component to enhance the dynamic response of the output voltage under the input voltage fluctuation and the load disturbance conditions. Meanwhile, the proposed OPCB-EPS scheme can realise the transmission power balance over the whole power range. Finally, a scale-down prototype of DAB dc–dc converters consisting of three cells is developed to compare the performance of the current stress optimised with dual phase-shift (CSO-DPS), current stress optimised with EPS and proposed OPCB-EPS schemes. The comparative experimental results have verified the excellent performance of OPCB-EPS scheme and the theoretical analysis in this work.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Modelling and simulation of KHLMS algorithm-based DSTATCOM
    • Authors: Mrutyunjaya Mangaraj;Anup Kumar Panda;
      Pages: 2304 - 2311
      Abstract: The assessment of the shunt compensation allied power quality glitches bounds the design and modelling of a controller for the d-FACTS (Distribution Flexible Alternating current Transmission System) device. So, Kernel Hebbian least mean square (KHLMS) is proposed for controlling the distributed static compensator (DSTATCOM) in this study. The KHLMS is the improved version of an adaptive LMS (ALMS), which is designed by using a suitable pattern of learning mechanism. Both the controller algorithms are formulated on the basis of mathematical equations using MATLAB/Simulink. In accordance with the system variation adaptability and experimental application, each phase controller is configured as an independent neural network structure. The objective of control algorithms is used for the extraction of fundamental active and reactive components from load currents for the generation of the reference source currents. In comparison with the ALMS algorithm, the KHLMS demonstrates more effective in improving the voltage regulation at DC link capacitor, voltage balancing, source current harmonic reduction, and power factor correction under the disturbance influences caused by even and uneven loading.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Single-magnetic equaliser without any sensors for series-connected battery
           strings
    • Authors: Fulin Liu;Runmin Zou;Mei Su;Yao Sun;Yonglu Liu;Xing Li;Hui Wang;Guo Xu;
      Pages: 2312 - 2320
      Abstract: This study proposes an automatic cell-to-cell equaliser to balance the battery voltages in series-connected battery strings. In the proposed equaliser, each cell needs only one MOSFET, and the adjacent cells share the transformer winding. The voltage balance is automatically realised by using a pair of complementary control signals with a fixed duty cycle. What's more, no sensing circuit is required. Consequently, the proposed equaliser is cost-effective and easy-to-realise. The circuit topology and operating principles are firstly presented. Then the voltage balance analysis is given in detail. Moreover, a design guide is also given by considering four lithium-ion cells. Finally, the validity of the proposed equaliser is verified by experimental results.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Modified amplitude adaptive control algorithm for power quality
           improvement in multiple distributed generation system
    • Authors: Seema Kewat;Bhim Singh;
      Pages: 2321 - 2329
      Abstract: This study deals with the modified amplitude adaptive notch filter (AANF)-based control algorithm for managing the generated power from different energy sources in an autonomous microgrid. In this study, the autonomous microgrid consists of a wind energy conversion system, photovoltaic array and a storage battery. The main objective of the proposed modified AANF (MAANF)-based control algorithm is to control the flow of active and reactive powers among the different energy sources and the load, along with the regulation of the point of common coupling (PCC) voltages and mitigation of the source current harmonics. The advanced features of proposed control algorithm are the DC-offset rejection from the input signal and fast frequency estimation, which enable the MAANF control algorithm to rapidly and accurately estimate the fundamental components of the distorted load currents. Therefore, the estimated reference source currents remain immune to the DC offset and various harmonic currents. The active power balance is achieved by regulating the DC-link voltage using a bidirectional DC–DC converter, which is connected between the DC link of the voltage source converter and a storage battery. Test results have validated the control algorithm under various steady-state and dynamic operating conditions.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • High-efficiency topology-morphing multi-resonant DC–DC converter with
           wide voltage gain range for small-scale wind generation applications
    • Authors: Fuqiang Han;Yifeng Wang;Liang Yang;Mengying Chen;Ruixin Liu;Rong Xu;
      Pages: 2330 - 2337
      Abstract: In this study, a high-efficiency topology-morphing multi-resonant DC–DC converter is proposed. The converter employs two auxiliary switches to control the equivalent resonant tank, and thus exhibits adaptive resonant characteristics for diverse situations. The dual-transformer MRC structure is applied when high-voltage gain is required, while a five-element MRC operates at the rated state for high-conversion efficiency. Besides, good protection for the over-current issue is guaranteed. Also, beneficial from the topology-morphing technology, the operating frequency range is very narrow and near every mode's high-efficiency region. Therefore, the proposed converter has an expanded voltage gain range and maintains high-efficiency throughout. These features make it well suitable for small-scale wind generation applications. Finally, a 500 W prototype is fabricated in the laboratory to test the performances. The input voltage varies from 80 to 600 V and the output voltage is constant at 400 V. The efficiency remains high (>96.5%) among the entire voltage gain range and the peak value reaches 97.93%.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Receiving-coil structure reducing stray AC resistance for resonant
           coupling wireless power transfer
    • Authors: Kazuhiro Umetani;Toru Honjo;Takahiro Koyama;Masataka Ishihara;Eiji Hiraki;
      Pages: 2338 - 2344
      Abstract: Resonant inductive coupling wireless power transfer is widely known to be a possible convenient power supply method for the small mobile apparatus. However, the limited receiving-coil size tends to lower the efficiency and limit the output power owing to the small mutual inductance and comparatively large stray alternating current (AC) resistance of the receiving-coil. This study mitigates this issue by proposing a novel receiving-coil structure. This proposed structure comprises a coil and a drum core with a thin axis. The coil is wound on the axis to form a single winding layer. The proposed structure can reduce stray AC resistance by suppressing the proximity effect and reducing the wire length without deteriorating the mutual inductance significantly. Therefore, better efficiency and larger output power can be achieved. Simulations and experiments were performed to verify the proposed structure. Consequently, both simulations and experiments supported the reduction in AC resistance compared to the conventional structure. Furthermore, the experiment revealed improvements by the proposed structure in both efficiency and output power. These results support the effectiveness of the proposed structure for wireless power transfer to small mobile apparatus.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Load and mutual inductance estimation based on phase-differences for
           electric vehicle wireless charging system
    • Authors: Yuwang Zhang;Yanjie Guo;Qingwei Zhu;Lifang Wang;
      Pages: 2345 - 2352
      Abstract: In this study, a new method to estimate the load and mutual inductance for a wireless charging system (WCS) is presented. Instead of simultaneously using the root mean square and phase angles of related voltages and currents, accurate estimations can be obtained through the phase differences in the primary side. Firstly, the WCS model with dual-side inductor–capacitor–capacitor compensation networks is established, and the reflected impedance is analysed based on the phase differences in the primary side. Then, the estimation calculation of load and mutual inductance is derived according to the reflected impedance. Meanwhile, the output voltage estimation in the primary side is realised based on the estimated values of the load and mutual inductance. Finally, experiments are conducted to verify the effectiveness of the proposed method in the 3.3 kW electric vehicle wireless charging experiment platform. Experimental results show that the estimation errors of the load and mutual inductance are
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Adaptive impedance matching of rectifier for a 100 MHz microwave
           power transfer system
    • Authors: Xirui Zhu;Ke Jin;Yuezhe Chen;
      Pages: 2353 - 2360
      Abstract: Microwave power transmission (MPT) has been one of the most promising systems in the far-field wireless power transmission system. In MPT system, the harmonic energy generated by conventional diode rectifying circuit has great impact on the overall efficiency. Moreover, the passive impedance network leads to power reflection, which is the other factor leading to the overall efficiency decline. In this study, a 10 W output 100 MHz two-stage adaptive impedance-matching rectifying circuit is proposed which can make input impedance constant. About 100 MHz belongs to the band of radio frequency (RF) and the conception of microwave. The first-stage rectifier is modelled mathematically, which plays an essential role in constructing the initial input impedance and designing the control method of second-stage converter. By adjusting the duty cycle of the second-stage converter, the impedance of the whole rectifier realises 50 Ω under various input and the output conditions by means of simulations and experiments. The simulation and experimental results are shown to verify the effectiveness of the proposed RF to direct current converter and its control method. The overall efficiency with full load is up to nearly 65%.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Flexible topology converter used in photovoltaic micro-inverter for higher
           weighted-efficiency
    • Authors: Jiarong Kan;Yunya Wu;Yu Tang;Shaojun Xie;
      Pages: 2361 - 2371
      Abstract: This study proposes a pre-stage flexible DC–DC converter (PFDDC) for PV micro-inverter. The PFDDC can be operated in different modes automatically, i.e. the improved full-bridge mode when the output power is higher than the threshold value or in the improved two-transistor forward mode when the output power is lower than the threshold value. The operational principles of the PFDDC in different modes are analysed. The design of the key parameters, such as the turns ratio of transformer and buffering inductance, is presented at first. Then the loss analysis of the PFDDC in different modes is used to determine the threshold power, based on which a switch control strategy according to the threshold power value is proposed. Integration of two operational modes in a single PFDDC can effectively increase the weighted efficiency of the PV micro-inverter to easily satisfy the mandatory efficiency requirement in Europe and USA. Experimental results are presented to verify the effectiveness of the proposed PFDDC.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • High boost-ratio bidirectional converter for interfacing low-voltage
           battery energy storage system to a DC bus
    • Authors: Eliud G. Muchina;Lebogang Masike;Michael Njoroge Gitau;
      Pages: 2372 - 2381
      Abstract: Supply and demand mismatches in renewable energy systems are addressed by integrating battery banks. Selecting battery bank terminal voltage to match DC-bus voltage (350–450 V for single-phase AC loads), necessitates employing battery banks with long-string connections along with their attendant shortcomings. To employ short-string battery banks, high-boost-ratio bidirectional interfaces are required between the DC-bus and battery bank. Current literature lacks a single source where high-boost-ratio converters’ are categorised and their strengths and weaknesses identified. Comprehensive literature review is hence carried out to determine attributes of various high-boost-ratio DC–DC converters and also categorise them. The key attributes of a topology to interface battery storage to a DC-bus are determined. Based on these a bidirectional tapped-inductor boost converter emerges as the best candidate. Moreover, in order to regulate output voltage, voltage-gain versus duty-ratio characteristics should not be very steep. Since battery terminal voltage varies with state-of-charge, closed-loop control is necessary. Converter's small-signal transfer-functions are derived and a two-loop controller to regulate output voltage and inductor current while allowing bidirectional power flow designed. A novel bidirectional passive lossless snubber circuit is employed to clamp the voltage spikes across the active switches, without altering the normal operation of the converter.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Voltage harmonic injection angle optimisation for grid current harmonics
           using a PV converter
    • Authors: Ioannis D. Bouloumpasis;Panagis N. Vovos;Konstantinos G. Georgakas;
      Pages: 2382 - 2388
      Abstract: In this work, the impact of voltage harmonic injection angle on grid current harmonics using a power converter supplied by photovoltaic (PV) array is studied. Converter and PV non-linear operation cause harmonic distortion, which is superimposed to the existing harmonic content of the grid. First, a general mathematical expression connecting voltage harmonic injection angle and current distortion at the same frequency is theoretically proven. This general expression is verified by experimental results for various converter output levels and grid properties, and voltage harmonic injections at various orders and amplitudes. Since the expression is a convex function, there is a unique injection angle that minimises overall current harmonic at the same frequency. The second contribution of this research is that with a minimum of three injections at random angles the parameters of the general expression can be calculated, thus the optimum injection angle can be determined. In comparison to other works, the knowledge of converter harmonic properties, grid harmonic content or grid connection type (inductive, ohmic, mixed) is not needed.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Control delay compensation scheme based on non-instantaneous loading and
           pulse-width equivalence for active damping of LCL-type inverters
    • Authors: Kunlong Zhu;Pengju Sun;Lin Wang;Luowei Zhou;Xiong Du;
      Pages: 2389 - 2399
      Abstract: Active damping (generally by the feedback of capacitor current) is an effective solution to the resonance peak of LCL-type grid-connected inverters. However, the damping performance is significantly affected by the computation and pulse-width modulation delays in the digital control system, which results in poor system robustness. Moreover, the phase lag would be introduced by these control delays, leading to the constrained bandwidth and low-frequency gain of control loop. In this study, a novel compensation method based on non-instantaneous loading and pulse-width equivalence is proposed to completely eliminate the computation delay without any reliability problem. Moreover, compared to the traditional strategies, the proposal can be extended to most two-level converters because of its simplicity. Finally, the validity of the proposed method is confirmed by the experimental results from a 3 kW single-phase grid-connected inverter with an LCL filter.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Model predictive control of induction motor based on amplitude–phase
           motion equation
    • Authors: Ziguang Lu;Ruilin Zhang;Likun Hu;Lin Gan;Jingyu Lin;Pingping Gong;
      Pages: 2400 - 2406
      Abstract: Tedious adjustment of the weighting factor restricts the wide application of conventional model predictive torque control (MPTC) for induction motors (IMs) in practice. To solve this problem, this study introduces a new variable R (reactive torque) to control the flux of IM, which is the dual of torque T, with radial orientation and in relation to reactive power. Then, a novel MPTC strategy based on variable R and torque T is proposed and named RT-MPC. Compared with conventional MPTC, RT-MPC uses a pair of variables with the same dimensions and time scales instead of the torque and flux amplitude in MPTC. This approach eliminates the weighting factor of the cost function, unifies the time scales of control variables, and avoids prediction of rotor flux at the (k + 2) instant. Simulation and experimental results show that RT-MPC can avoid the weighting factor, reduce switching frequency, and reduce control complexity. RT-MPC can also maintain excellent dynamic and steady-state performance similar to conventional MPTC. Hence, the proposed method is expected to be more practical.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Design and application of electrical power backup and battery charge with
           a new voltage controller approach for military vehicles
    • Authors: Ahmet Aktas;
      Pages: 2407 - 2413
      Abstract: Thanks to the increased reliability and performance of power electronics, their use in military areas is very common. Through the developing technology, military land vehicles can have many equipment rather than just a replenishment and military transport duty. For safety and confidentiality, it is not possible to supply the energy of these equipments with the 28 V lead-acid batteries on the military vehicle during the silent watch (when the vehicle is stationary). In this study, electrical power backup and battery charge circuit has been designed and applied for military land vehicles for this purpose. When providing power to devices and charging the battery in the vehicle, it is important to ensure that the circuit is stable, robust and accordance with military standards. The output voltage of this power circuit is controlled by the use of robust control and nonlinear voltage control methods and this method brings innovation in this field. In this study, voltage surges in power circuit output due to sudden load changes are minimized by the proposed voltage control method. Thus, the conformity of the power circuit to the MIL-STD-1275-E voltage surges standard, which is one of the military standards, is provided by experimental results.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • High step-up cascaded DC–DC converter integrating coupled inductor
           and passive snubber
    • Authors: Quanyou Pan;Hongchen Liu;Pat Wheeler;Fengjiang Wu;
      Pages: 2414 - 2423
      Abstract: A new high step-up cascaded DC–DC converter is proposed in this study, which is composed of one cascaded boost converter, one diode–capacitor structure and a coupled inductor with extended voltage-doubling cell. The proposed converter can achieve high-voltage gain by adjusting the duty cycle and the turns ratio of the coupled inductor, which avoids the circuit operating at the extreme duty cycle. Moreover, a passive clamped circuit is utilised to decrease the voltage stresses on the power devices and absorb the energy of leakage inductance of the coupled inductor to increase voltage gain. Thus, it reduces the conduction losses and alleviates the reverse-recovery problem of diodes. In conclusion, the proposed converter can achieve high-voltage gain and improve efficiency. The operating principle and steady-state analysis of the proposed converter is illustrated in detail in this study. Finally, experimental results of a prototype circuit with input voltage 40 V, output voltage 300 V and output power 200 W are presented to verify the analysis results of the proposed converter.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
  • Analytical solution for the inductor current of BOOST converter
    • Authors: Zhang Botao;Wang Qi;Zhao Min;Huang Huan;
      Pages: 2424 - 2432
      Abstract: This study proposes an analytical solution for the inductor current of the BOOST converter using the relative inductance as an independent variable based on the relative variable method. First, the expressions of the actual and relative values of current and energy for BOOST circuits are derived, based on the principle of KCL and conservation of energy. Second, three different cases for calculating the minimum and maximum values of the critical inductance are discussed under a variable input voltage. Then, the analytical solutions for inductor current and duty cycle in CCM and DCM are derived by taking the relative inductance as an independent variable. Furthermore, based on the inductor current equations, the authors deduce the analytical solutions for RMS, derivatives of RMS, delta, the maximum and minimum of the inductor current, and the maximum energy of the inductor. Finally, simulation and experimental results are presented to verify those formulas.
      PubDate: 8 7 2019
      Issue No: Vol. 12, No. 9 (2019)
       
 
 
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