摘要
由于传统的充电系统存在着充电次数多,效率低等问题,为了提高系统转换效率、增大功率密度以及缩短充电时间,提出一种AC/DC矩阵变换器拓扑结构并采用快速脉冲充电的方法,将常规双闭环控制中的电压外环给定值以脉冲形式给定,实现电池快速脉冲充电,消除了电池极化现象,延长了电池接受大电流充电的时间。仿真结果表明:矩阵式V2G双向快速充电双闭环控制策略能够实现V2G快速充放电,并且在脉冲充电和恒流放电过程中网侧电流谐波畸变率均小于5%,功率因数可以达到1.0,系统的结构紧凑功率密度大效率高。
In order to improve the conversion efficiency, increase the power density and shorten the charging time, a new method which is based on AC/DC matrix converter topology and fast pulse charging is proposed. The voltage in the conventional double closed-loop control is changed in the form of pulse mode, which can realize the fast pulse charging, eliminate the polarization phenomenon and prolong the time of receiving the high current charge. According to the simulation results, the double closed-loop control based on the V2G bidirectional charger of the matrix converter can achieve fast charging, and the network side current harmonic distortion of pulse charging and the discharge of constant current is less than 5% and the power factor can reach 1.0. Besides, the system has some ad- vantages, such as compact structure, large power density and high efficiency.
出处
《计算机仿真》
CSCD
北大核心
2016年第7期223-228,313,共7页
Computer Simulation
基金
西安市科技计划项目(CXY1509(1))
关键词
脉冲充电
矩阵变换器
仿真
Pulse charging
Matrix converter
Simulation
