Abstract

With the development of wireless power transfer (WPT), the wireless charging has become a research hotspot. This paper proposes a novel single-switch hybrid compensation topology, which can change the compensation network to realize the constant-current (CC) and constant-voltage (CV) output. The zero voltage switching (ZVS) margin can be designed to increase the stability of the system. In addition, the magnetic coupler adopts a composite shielding structure composed of ferrite, nanocrystalline, and aluminium foil. The composite shielding structure has a better shielding effect on magnetic flux leakage, and its weight is lighter. The composite shielding structure is expected to be used in the wireless charging system of electric vehicles (EVs). Finally, an experimental prototype is built to verify the theoretical analysis, and the maximum efficiency can reach 91.4%.

Highlights

  • The near-field technique is more suitable for consumer electronic devices

  • This topology is suitable for the wireless charging of batteries

  • CC and frequency unchanged, this paper proposes a method to realize the output by frequency unchanged, this paper proposes a method to realize the CV output [26–28]

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Summary

Introduction

With the development of wireless power transfer (WPT), some WPT products have gradually come into people’s vision and received great attention. The CV or CC output can be realized by changing the switching frequency without changing the circuit parameters This topology is suitable for the wireless charging of batteries. In the single-switch circuit, the P-CLCL compensation network and frequency modulation control are used to achieve the high precision CC and CV output [25]. The third method is to control the working state of and Constant-Voltage Output for Single-Switch WPT System with. The problem of electromagnetic interference has of gradually attracted the the single-switch This discussed the composite shielding attention of users. Constant-current and constant-voltage charging curves of aalithium-ion lithium-ion battery. CV modes sation sation topology topology is is proposed, proposed, and and the the compensation compensation networks networks of of the the CC

Section 2.
Analysis Compensation Network
D3D2D4 IL
Calculation of Equivalent Input AC Voltage Source
Section 3.
14. Normalized
16. Cross-sectional
Parameters
Experimental Verification
96 VnF μH
21. Dynamic
Findings
Conclusions
Full Text
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