基于串联谐振变换器的感应式电能传输系统研究

摘要

为提高装甲车辆蓄电池充电装置的环境适应性和安全性,解决传导式电能传输不适合旋转部件的难题,提出一种基于串联谐振式变换器的感应式电能传输系统.该系统是采用旋转式耦合器,以耦合器的漏感为谐振电感,应用全桥式串联谐振功率变换器的电能传输系统.利用所设计的感应式电能传输试验装置,进行了不同气隙条件下的功率传输和初、次级电流对比试验,试验结果表明:随着耦合器气隙增大,电能传输效率呈现斜率渐缓式减小趋势,励磁电感减小,励磁电流变大,耦合器的铁损增加,系统的功率因数降低.%A kind of inductive power transfer system,based on series-resonant power converter,is presented to improve the safety and environmental adaptability of charging apparatus,and to solve the difficulty of power conduct between rotary component and stationary component in armored vehicles. The system adopts a rotary type coupler. The leakage inductance of coupler is resonant inductance of resonant circuit. Full bridge series-resonant power converter is adopted. Based on the designed device,the experiments,which study efficiency of power transfer about primary coil current and secondary coil current with different air gaps,are conducted. The results show that magnetizing inductance,power transfer efficiency and power factor decrease with coupler air gap increasing, but leak inductance and the loss of coupler increase.