Misalignment-Tolerant Series Hybrid with Active Adjustable Constant Current and Constant Voltage Output Wireless Charging System

Zhao-Wei Gong, Jin-Gang Li and Xiang-Qian Tong
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Zhao-Wei Gong: School of Electrical Engineering, Xi’an University of Technology, 58, Yanxiang Rd., Xi’an 710054, China
Jin-Gang Li: School of Electrical Engineering, Xi’an University of Technology, 58, Yanxiang Rd., Xi’an 710054, China
Xiang-Qian Tong: School of Electrical Engineering, Xi’an University of Technology, 58, Yanxiang Rd., Xi’an 710054, China

Energies, 2021, vol. 14, issue 22, 1-17

Abstract: This paper presents a series hybrid wireless charging system with an active adjustable circuitry offering constant current and constant voltage output characteristics. The series hybrid system consists of the inductor–capacitor–capacitor ( LCC ) and series-series (SS) networks are used for improving charging pad misalignment tolerance. An active switch is employed to provide an adjustable CC and CV output for different battery charging stages. To demonstrate the performance of the proposed method, a 310 W prototype was built. A systematic optimization in the parameter of the proposed topology to achieve relative constant output was analyzed within a certain range of the designed operating region. The experimental results indicate that the output current fluctuation is less than 5% with load variations, and the output voltage fluctuation is less than 5% with load varying from 19 to 70 Ω, as the pick-up pads misaligned within 50% of the pad outer diameter.

Keywords: wireless power transfer; constant current output; constant voltage output; misalignment (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: 2021
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