摘要
电动汽车无线充电系统会工作在重载、轻载和空载等多种工况,因此其逆变器需要满足宽负载范围内的零电压开关(ZVS)要求。电动汽车无线充电系统一般采用移相全桥逆变器,而传统的移相全桥逆变器存在滞后臂难以实现ZVS的问题,无法满足宽负载工作范围的要求。该文采用带辅助网络的电流增强型全桥逆变器拓扑,对电动汽车无线充电系统的宽输出范围逆变器进行设计,通过分析实际系统中的电压/电流尖峰产生机理,采用相应的尖峰抑制措施,搭建了宽范围输出的逆变器硬件系统,实验结果表明在系统重载、轻载和空载状态下,逆变器均能实现ZVS软开关。
Electrical vehicle(EV)have to operate in different conditions including null-load,lightload,and heavy-load,so the inverter need to work in wide power range.Conventional phase-shifted fullbridge converters have problems such as difficult to achieve ZVS for lagging bridge.This paper adapted a current-enhanced inverter topology with auxiliary network to design a wide-power-range inverter for wireless charging system.By analysis on mechanism of current and voltage peaks in actual system,corresponding measures are taken and hardware system is established.The result of experiments showed that the designed inverter could achieve ZVS under all three operating conditions.
作者
吉莉
廖承林
王丽芳
李树凡
Ji Li;Liao Chenglin;Wang Lifang;Li Shufan(Key Laboratory of Power Electronics and Electric Drive Institute of Electrical Engineering Chinese Academy of Sciences,Beijing,100190,China;Beijing Co-Innovation Center for Electric Vehicles,Beijing,100081,China;University of Chinese Academy of Sciences,Beijing,100190,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2018年第A01期9-17,共9页
Transactions of China Electrotechnical Society
基金
国家重点研发计划资助项目(2016YFE0102200)
关键词
电动汽车
无线充电
移相全桥
辅助网络
零电压开关
Electric vehicle
wireless charging
phase-shifted full-bridge
auxiliary network
zero voltage switch
