电动汽车无线充电系统负载消失时保护问题研究
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摘要
电动汽车无线充电系统运行过程中,当出现车辆离开、接收端断路或短路等情况时,发送端逆变器电流幅值与ZVS状态将会发生急剧变化,甚至可能造成逆变器损坏。在分析接收端阻抗消失对逆变器输出电流及其相位角影响的基础上,提出了基于过流保护、相角失调保护、相角饱和保护相结合的电路保护策略,并设计了相应的检测电路。为验证上述检测电路与算法,开发了原型机并进行试验验证。试验结果表明,所设计的保护电路及算法能够及时检测出系统的异常工作状态并采取动作,保护系统主电路不受损坏。
As to a wireless charging for electric vehicle,the current output from the inverter at the sending side will change greatly under the case such as vehicle moving away,short-circuit or open-circuit at the receiving side. At the worst cases,inverter will break down immediately. This paper analyzed the influences on inverter current both at its amplitude and angle lagging the voltage. Based on the analysis,a protection strategy integrating of the overcurrent protection,the insufficient angle protection and the excessive angle protection was proposed. Additionally,the detecting circuit was designed. To verify the proposed protection strategy and detecting circuit,a lab prototype was developed for the experiment. The experiments show that the circuit and algorithm will detect the fault state of the wireless charger and execute protection act to protect power circuit from damage.
As to a wireless charging for electric vehicle,the current output from the inverter at the sending side will change greatly under the case such as vehicle moving away,short-circuit or open-circuit at the receiving side. At the worst cases,inverter will break down immediately. This paper analyzed the influences on inverter current both at its amplitude and angle lagging the voltage. Based on the analysis,a protection strategy integrating of the overcurrent protection,the insufficient angle protection and the excessive angle protection was proposed. Additionally,the detecting circuit was designed. To verify the proposed protection strategy and detecting circuit,a lab prototype was developed for the experiment. The experiments show that the circuit and algorithm will detect the fault state of the wireless charger and execute protection act to protect power circuit from damage.
引文
[1]朱春波,姜金海,宋凯,等,电动汽车动态无线充电关键技术研究进展[J].电力系统自动化,2017,41(2):60-65.
[2]赵争鸣,刘方,陈凯南.电动汽车无线充电技术研究综述[J].电工技术学报,2016,31(20):30-40.
[3]MI C C,BUJA G,CHOI S Y,et al.Modern advances in wireless power transfer systems for roadway powered electric vehicles[J].IEEE Transactions on Industrial Electronics,2016,63(10):6533-6545.
[4]邢英翔,崔玉龙,范好亮,等.电动汽车动态无线电能传输技术研究与应用进展[J].电器与能效管理技术,2017(2):36-43.
[5]DENG Q,LIU J,CZARKOWSKI D,et al.An inductive power transfer system supplied by a multiphase parallel inverter[J].IEEE Transactions on Industrial Electronics,2017,64(9):7039-7047.
[6]邓其军,刘姜涛,陈诚,等.无线电能传输系统三相相移控制逆变器研发[J].电工技术学报,2017,32(18):52-61.
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[10]刘闯,郭赢,葛树坤,等.基于双LCL谐振补偿的电动汽车无线充电系统特性分析与实验验证[J].电工技术学报,2015,30(15):127-135.
[11]陈凯楠,赵争鸣,刘方,等.电动汽车双向无线充电系统谐振拓扑分析[J].电力系统自动化,2017,41(2):66-72.
[12]蔡华,史黎明,李耀华.感应耦合电能传输系统输出功率调节方法[J].电工技术学报,2014,29(1):215-220.
[13]宋凯,李振杰,杜志江,等.变负载无线充电系统的恒流充电技术[J].电工技术学报,2017,32(13):130-136.
[14]MOHAMED A A S,BERZOY A,DE-Almeida F G N,et al.Modelling and assessment analysis of various compensation topologies in bidirectional IWPT system for EV applications[J].IEEE Transactions on Industry Applications,2017,53(5):4973-4984.
[15]SAMANTA S,RATHORE A K,THRIMAWITHANA D J.Bidirectional current-fed half-bridge(C)(LC)–(LC)configurationfor inductive wireless power transfer system[J].IEEE Transactions on Industry Applications,2017,53(4):4053-4062.
[16]周洪,蒋燕,胡文山,等.磁共振式无线电能传输系统应用的电磁环境安全性研究及综述[J].电工技术学报,2016,31(2):1-12.
[17]黄润鸿,张波,朱喆,等,无线电能传输技术电磁环境研究综述[J].南方电网技术,2016,10(11):39-44.
[18]邓其军,刘姜涛,周洪,等.应用于无线电能传送的测控系统设计与开发[J].电力自动化设备,2015,35(7):147-152.
[2]赵争鸣,刘方,陈凯南.电动汽车无线充电技术研究综述[J].电工技术学报,2016,31(20):30-40.
[3]MI C C,BUJA G,CHOI S Y,et al.Modern advances in wireless power transfer systems for roadway powered electric vehicles[J].IEEE Transactions on Industrial Electronics,2016,63(10):6533-6545.
[4]邢英翔,崔玉龙,范好亮,等.电动汽车动态无线电能传输技术研究与应用进展[J].电器与能效管理技术,2017(2):36-43.
[5]DENG Q,LIU J,CZARKOWSKI D,et al.An inductive power transfer system supplied by a multiphase parallel inverter[J].IEEE Transactions on Industrial Electronics,2017,64(9):7039-7047.
[6]邓其军,刘姜涛,陈诚,等.无线电能传输系统三相相移控制逆变器研发[J].电工技术学报,2017,32(18):52-61.
[7]HAO H,COVIC G,BOYS J.A parallel topology for inductive power transfer power supplies[J].IEEE Transactions on Power Electronics,2014,29(3):1140-1151.
[8]LI Y,MAI R,LU L,et al.Active and reactive currents decomposition based control of angle and magnitude of current for a parallel muti-inverter IPT system[J].IEEE Transactions on Power Electronics,2017,32(2):1602-1614.
[9]张辉,王换民,李宁,等.电动汽车无线充电混合补偿拓扑电路分析[J].电力系统自动化,2016,40(16):71-75.
[10]刘闯,郭赢,葛树坤,等.基于双LCL谐振补偿的电动汽车无线充电系统特性分析与实验验证[J].电工技术学报,2015,30(15):127-135.
[11]陈凯楠,赵争鸣,刘方,等.电动汽车双向无线充电系统谐振拓扑分析[J].电力系统自动化,2017,41(2):66-72.
[12]蔡华,史黎明,李耀华.感应耦合电能传输系统输出功率调节方法[J].电工技术学报,2014,29(1):215-220.
[13]宋凯,李振杰,杜志江,等.变负载无线充电系统的恒流充电技术[J].电工技术学报,2017,32(13):130-136.
[14]MOHAMED A A S,BERZOY A,DE-Almeida F G N,et al.Modelling and assessment analysis of various compensation topologies in bidirectional IWPT system for EV applications[J].IEEE Transactions on Industry Applications,2017,53(5):4973-4984.
[15]SAMANTA S,RATHORE A K,THRIMAWITHANA D J.Bidirectional current-fed half-bridge(C)(LC)–(LC)configurationfor inductive wireless power transfer system[J].IEEE Transactions on Industry Applications,2017,53(4):4053-4062.
[16]周洪,蒋燕,胡文山,等.磁共振式无线电能传输系统应用的电磁环境安全性研究及综述[J].电工技术学报,2016,31(2):1-12.
[17]黄润鸿,张波,朱喆,等,无线电能传输技术电磁环境研究综述[J].南方电网技术,2016,10(11):39-44.
[18]邓其军,刘姜涛,周洪,等.应用于无线电能传送的测控系统设计与开发[J].电力自动化设备,2015,35(7):147-152.