摘要
针对无线电能传输系统中全桥逆变器开关管的开通和关断存在振铃,能量传输波形纹波大,导致逆变器温升大和工作不稳定的问题,进行了电路建模分析,开展了全桥逆变器性能优化研究。首先,对逆变器开关管驱动电路进行了简化,建立了RLC串联谐振电路模型,分析了驱动电路结构参数对逆变器性能的影响规律,得出了优化方法;其次,分析了逆变器纹波大的问题,给出了优化方法;最后,搭建了300 W无线电能传输系统并进行实验。实验结果验证了优化方法的正确性和有效性,逆变器性能得到了改善,温升得到了有效控制,系统传输效率提高了5.3%,整机效率达到了89.3%。
In order to solve the problems of ringing in the turn-on and turn-off of switching tube of full-bridge inverter in wireless power transfer(WPT)system and large ripple in the energy transmission waveform,which lead to high temperature rise and unstable operation of the inverter,the circuit modeling analysis is carried out,and the performance optimization of full-bridge inverter is carried out.The driving circuit of the inverter switching tube is simplified,an RLC series resonant circuit model is established,and the influence of driving circuit structural parameters on inverter performance is analyzed,so that the optimization method is derived.The problem of large ripple in inverter is analyzed to provide the optimization method.In the end,A 300 W WPT system was built,and the correctness and effectiveness of the optimization method were verified by experiments.The inverter performance is improved,the temperature rise is controlled effectively,the system transfer efficiency is increased by 5.3%,and the overall efficiency can reach 89.3%.
作者
刘溯奇
颜雪盈
刘玉萍
LIU Suqi;YAN Xueying;LIU Yuping(School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin 541004,China)
出处
《现代电子技术》
北大核心
2024年第18期89-94,共6页
Modern Electronics Technique
基金
广西自然科学基金项目(2021JJA160252)
桂林电子科技大学高层次人才资助项目(UF20008Y)。
关键词
无线电能传输
全桥逆变器
纹波抑制
串联谐振电路
RLC电路
开关管
wireless power transfer
full-bridge inverter
ripple suppression
series resonant circuit
RLC circuit
switching tube
