电动车WPT系统的前级电路控制策略优化算法研究  

Research on Optimization Algorithm of Front Stage Circuit Control Strategy for Electric Vehicle WPT System

作　　者：董晓帅 王林[1] DONG Xiao-shuai;WANG Lin(XJ Group Corporation,Xuchang 461000 China)

机构地区：[1]许继集团有限公司,河南许昌461000

出　　处：《自动化技术与应用》2022年第8期8-10,14,共4页Techniques of Automation and Applications

基　　金：国家重点研发计划资助项目(2018YFB0106300);国家电网公司科技项目资助(52110418003G)。

摘　　要：针对目前电动车无线充电系统采用前级功率因数校正整流、后级DC-DC变换及磁谐振耦合的方案,存在无线充电系统的功率因数较小、输出电压纹波系数较大、整机效率较低的问题,提出电动车WPT系统的前级电路控制策略优化算法。根据三相维也纳整流器的工作原理,建立前级电路的等效数学模型,分析前级电路控制策略的优化问题,提出电流内环滞环控制和电压外环PI控制的有效控制算法。仿真结果表明,所提出的控制方法无线充电系统功率因数较大,输出电压纹波系数较小,能够有效提高整机效率。At present,the wireless charging system of electric vehicle adopts the scheme of front stage power factor correction rectification,back stage DC-DC conversion and magnetic resonance coupling,which has the problems of low power factor,large output voltage ripple coefficient and low overall efficiency.Based on the working principle of the three-phase Vienna rectifier,the equivalent mathematical model of the front stage circuit is established.The optimization problem of the front stage circuit control strategy is analyzed.The effective control algorithms of the current inner loop hysteresis control and the voltage outer loop PI control are proposed.The simulation results show that the power factor of the wireless charging system is large and the output voltage ripple coefficient is small,which can effectively improve the efficiency of the whole machine.

关 键 词：无线电能传输 前级电路 控制方法 无线充电 滞环 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]