谐振网络优化设计的多接收全方向无线电能传输系统

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关键词：全方向无线电能传输；多接收；互感；谐振网络设计；抵消电容

中图分类号：TM742 文献标志码：A 文章编号：1672-9315（2025）05-0964-09

DOI：10. 13800/j. cnki. xakjdxxb. 2025.0512

Multi-receiver omnidirectional wireless power transfer system optimized by resonant network

WANG Dangshu1，²， JIA Rulin1，2， WANG Jing1，2， WU Jiaju1，2， ZHANG Ruchuan1²， YANG Jiahao12，LIU Mingyao1，2 （1.CollegeofElectricalandControl Engineing，Xi'an UniversityofScienceandTechnologyXi'an7Oo54，China; 2. Xi’an Key Laboratory of Electrical Equipment Condition Monitoring and Power Supply Security， Xi’an University of Science and Technology，Xi’an 710o54， China）

Abstract：To solve the problem of low transmission efficiency in multi-receiving omnidirectional Wireless Power Transfer（WPT）technology，the method of resonant network optimization design is adopted. By adding a series cancellation capacitor， the influence of mutual inductance between receiving coils is reduced，thereby improving the transmission eficiency of the system. The appropriate cancellation capacitance value was selected by using the weighting method in the multi-objective optimization algorithm.Finally，the omnidirectional WPT test platform was designed to compare the changes in the system transmission efficiency before and after adding the cancellation capacitance.The results show that before adding the cancellation capacitor，the average transmission efciency of the system was 61.9% ： After adding the cancellation capacitor，the average transmission eficiency of the system reached 73.1% ，with the average transmission eficiency of the system increased by 11.2% .When the load decreases from 35Ω to 25Ω ， the output current of the system remains essentially unchanged. When the transmission distance is between 150 and 200mm and the receiving coil rotates at any angle， the system provides a constant current output，and the transmission efficiency remains above 70% . The research results provide an improved method for solving the transmission eficiency problem in the multireceiving omnidirectional WPT system.

Key Words： omnidirectional wireless power transfer; multiple reception; mutual inductance; resonant network design;counteracting capacitance

0 引言

近年来，无线电能传输（WirelessPowerTrans-fer，WPT）技术因其灵活性及便捷性日益成为各种应用的热门技术，例如消费电子产品、无人机、电动汽车等。（剩余12093字）