Hybrid journal (It can contain Open Access articles) ISSN (Print) 1742-4267 - ISSN (Online) 1742-4275 Published by Inderscience Publishers[449 journals]

Authors:Hatim Ameziane, Kamal Zared, Hassan Qjidaa Pages: 273 - 291 Abstract: This paper presents an energy harvesting system to reduce the mass of the cables within an aircraft, focusing on the development of a power conversion chain to harvest energy from data lines, which is eventually used to supply the aircraft sensors or wireless monitoring. This proposed interface harvests energy from data CAN bus without disturbing the data transmission, providing an output current up to 60 mA and an output voltage of 1.65 V at the output of the fully-integrated-LDO and an output voltage of 5.035 V at the output of the charge pump within a very short settling time of less than 5 ms and a low voltage ripple of 158.2 mV, in order to feed the aircraft sensors. The most common energy harvester sources are solar cells, wind turbines, vibration energy and thermoelectric generators. The energy harvesting chain (EHC), which does not depend on the environment, is composed by fast analogue devices that are based on integrating a fully-integrated-LDO with a fast transient response, in order to make the aircraft sensors self-powered and operate in real time. The harvesting system is designed in 0.18 μm CMOS technology, the simulation results prove the advantage of the proposed architecture. Keywords: low dropout regulator; low dropout; LDO; integrated circuits; ICs; energy harvesting; embedded system; wireless sensor network; WSN; aircraft Citation: International Journal of Powertrains, Vol. 8, No. 4 (2019) pp. 273 - 291 PubDate: 2020-01-27T23:20:50-05:00 DOI: 10.1504/IJPT.2019.104667 Issue No:Vol. 8, No. 4 (2020)

Authors:Priyakant Vaghela, Jagdish Prajapati Pages: 292 - 326 Abstract: The focus of this work is a geometric parameter of an asymmetric involute spur gear tooth. Gear strength is influenced by tooth geometry. So, knowledge of tooth geometric is required which will help to improve the strength of a gear tooth. In this article, a data generated from an equations and presented in form of graph for better interpretation of the effect of drive side pressure angle on various parameters like contact ratio, HPSTC radius, load angle, tip thickness, thickness of tooth at pitch circle radius, critical section thickness, bending moment arm height, etc. Parametric analysis of gear tooth gives an idea about how different parameters affect tooth geometry of an asymmetric involute spur gear tooth which is essential for modelling and manufacturing. Parametric analysis helps to calculate optimise drive side pressure angle. It is also predicted or calculates % reduction in bending stress at the root of the tooth without using FEA. It is explained with illustration and results are compared to justify it. Keywords: pressure angle; fillet radius; bending stress; asymmetric spur gear tooth; parametric analysis; gear geometry Citation: International Journal of Powertrains, Vol. 8, No. 4 (2019) pp. 292 - 326 PubDate: 2020-01-27T23:20:50-05:00 DOI: 10.1504/IJPT.2019.104668 Issue No:Vol. 8, No. 4 (2020)

Authors:Joshua GÃ¶tz, Karsten Stahl Pages: 327 - 342 Abstract: The development of transmission types for passenger cars clearly shows a significant increase in vehicles with an electrified powertrain. Due to the electrification of the powertrain the total number of necessary gears is drastically reduced in battery electrical vehicles (BEV). Transmissions become lighter, more compact and their complexity is decreased. These changes leave the question open whether transmissions are still needed in the future. However, the requirements in terms of power density, efficiency and NVH are becoming more demanding. To meet these requirements, a large number of research projects are in progress which face the challenges in electrified transmissions. The following paper gives a broad overview over those research projects and shows the essential necessity of transmissions in electrified powertrains in the future. Keywords: electrified powertrain; battery electrical vehicle; BEV; passenger car transmission; efficiency; power density; noise vibration and harshness; NVH; gear production; future potentials of gears; plastic gears Citation: International Journal of Powertrains, Vol. 8, No. 4 (2019) pp. 327 - 342 PubDate: 2020-01-27T23:20:50-05:00 DOI: 10.1504/IJPT.2019.104669 Issue No:Vol. 8, No. 4 (2020)

Authors:Naoui Mohamed, Flah Aymen, Ben Hamed Mouna Pages: 343 - 358 Abstract: The objective of this paper is to define correctly the overall components of the wireless recharge system and study its efficiency in relation to the vehicle situation under various speeds values. This study required a detailed mathematical analysis and needs to define the correct relationship between more than parameters as the vehicle speed, the battery SOC, the distance between the two coils, the injected electrical power and the transmitter/receiver dimension and number. Also, the recharge time factor was taken in consideration in this phase. The analysis study was elaborated using Matlab/Simulink software and the obtained results were showed that the efficiency of this recharge system depends, numerous and essential factors, especially the vehicle speed. So, a selective recommendation was given at the end of this study. Keywords: wireless charging; electric vehicle; battery; Matlab/Simulink; pure electric vehicle; dynamic wireless charging Citation: International Journal of Powertrains, Vol. 8, No. 4 (2019) pp. 343 - 358 PubDate: 2020-01-27T23:20:50-05:00 DOI: 10.1504/IJPT.2019.104674 Issue No:Vol. 8, No. 4 (2020)