三相－单相矩阵变换器的感应式无线电能传输系统调制策略

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DO1：10.15938/j. emc.2025.05.015

中图分类号：TM724 文献标志码：A 文章编号：1007-449X（2025）05-0157-10

Modulation strategy for inductive wireless power transfer systems with three-phase to single-phase matrix converter

ZHANG Xin， WEI Xiangyu， GAO Jiaxin， WANG Longlong， GAO Pengxiang（TianjinKeyLaboratoryof Electrical Equipment Intellgent Control，，Tiangong University，Tianjin30o387，China）

Abstract：Aiming at the problems of relatively low transmission efciency，high cost，and complex structure existing in the multi-stage power conversion structure used in the inductive wireless power transfer system，a matrix converter was used to replace the traditional multi-stage power conversion structure，and a modulation strategy based on a three-phase to single-phase matrix converter was proposed to achieve direct AC-AC power conversion. The three-phase power frequency alternating current on the grid side undergoes power modulation by the matrix converter to realize the switching between the energy injection state and the free oscillation state，and directly output a high-frequency controllable current. The matrix converter has a total of twelve working modes.Based on the modulation strategy，the resonant current was adjusted. There is no need for intermediate energy storage elements，and the number of switch operations was reduced，enabling the power switching tubes to operate in the zero current switching（ZCS） state， thus improving reliability and eficiency of the converter. An experimental model was constructed for simulation analysis，and an experimental platform was built to verify feasibility of the control strategy. The experimental results show that the proposed control strategy directly converts the 50Hz power frequency alternating current into a 20kHz high-frequency alternating current. The output power of the matrix converter is 51.3 W，and the conversion efficiency is 92.9% . The modulation strategy used is simple and convenient for practical applications.

Keywords：inductive wireless power transfer; three-phase to single-phase matrix converter;modulation strategy ； zero current switching； resonant current

0引言

感应式无线电能传输（inductivepowertransfer，IPT）系统的应用越来越广泛，这得益于其能够通过无接触的方式安全地传输电能到负载并实现高效率的传输。（剩余13239字）