Switching Device Dead Time Optimization of Resonant Double-Sided LCC Wireless Charging System for Electric Vehicles

Xi Zhang, Ziyang Lai, Rui Xiong, Zhe Li, Zhimin Zhang and Liang Song
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Xi Zhang: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Ziyang Lai: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Rui Xiong: National Engineering Laboratory for Electric Vehicles, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Zhe Li: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Zhimin Zhang: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Liang Song: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Energies, 2017, vol. 10, issue 11, 1-10

Abstract: Aiming at the reduction of the influence of the dead time setting on power level and efficiency of the inverter of double-sided LCC resonant wireless power transfer (WPT) system, a dead time soft switching optimization method for metal–oxide–semiconductor field-effect transistor (MOSFET) is proposed. At first, the mathematic description of double-sided LCC resonant wireless charging system is established, and the operating mode is analyzed as well, deducing the quantitative characteristic that the secondary side compensation capacitor C 2 can be adjusted to ensure that the circuit is inductive. A dead time optimization design method is proposed, contributing to achieving zero-voltage switching (ZVS) of the inverter, which is closely related to the performance of the WPT system. In the end, a prototype is built. The experimental results verify that dead time calculated by this optimized method can ensure the soft switching of the inverter MOSFET and promote the power and efficiency of the WPT.

Keywords: inverter; dead time; soft switching; resonant wireless charging; electric vehicles (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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