Citation
Uddin, Mohammad Kamar and Saad, Mekhilef and Ramasamy, Gobbi (2018) Compact Wireless IPT System Using a Modified Voltage-fed Multi-resonant Class EF2 Inverter. Journal of Power Electronics, 18 (1). pp. 277-288. ISSN 1598-2092, 2093-4718
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Abstract
Wireless inductive power transfer (IPT) technology is used in many applications today. A compact and high-frequency primary side inverter is one of the most important parts of a WPT system. In this study, a modified class EF-type voltage-fed multi-resonant inverter has been proposed for WPT application at a frequency range of 85-100 kHz. Instead of an infinite input choke inductor, a resonant inductor is used to reduce loss and power density. The peak voltage stress across the MOSFET has been reduced to almost 60% from a class-E inverter using a passive clamping circuit. A simple yet effective design procedure has been presented to calculate the various component values of the proposed inverter. The overall system is simulated using MATLAB/SimPowerSystem to verify the theoretical concepts. A 500-W prototype was built and tested to validate the simulated results. The inverter exhibited 90% efficiency at nearly perfect alignment condition, and efficiency reduced gradually with the misalignment of WPT coils. The proposed inverter maintains zero-voltage switching (ZVS) during considerable load changes and possesses all the inherent advantages of class E-type inverters.
Item Type: | Article |
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Uncontrolled Keywords: | Power and power transmission, Class E inverter, Class EF inverter, High-frequency inverter, Inductive power transfer, Misalignment tolerance |
Subjects: | T Technology > TJ Mechanical Engineering and Machinery > TJ1040-1119 Machinery exclusive of prime movers |
Divisions: | Faculty of Engineering (FOE) |
Depositing User: | Ms Rosnani Abd Wahab |
Date Deposited: | 11 Nov 2020 14:56 |
Last Modified: | 11 Nov 2020 14:56 |
URII: | http://shdl.mmu.edu.my/id/eprint/7351 |
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