电动汽车充储放电站可逆充电机控制策略  

Control strategies of reversible chargers for electric vehicle charging storage and discharging station

作　　者：史乐峰[1,2] 刘正发[2] 赵杰[3] 李辉[3] 何蓓[1] 侯兴哲[2] 

机构地区：[1]国网重庆市电力公司,重庆400015 [2]国网重庆市电力公司电力科学研究院,重庆401123 [3]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《电测与仪表》2016年第1期43-49,共7页Electrical Measurement & Instrumentation

基　　金：2014年度重庆市博士后研究人员科研项目特别资助(Xm2014012);重庆市基础与前沿研究计划项目(cstc2014jcyjA90016)

摘　　要：为充分发挥电动汽车充储放电站与电网的能量双向流动特性,对站内可逆充电机进行建模,并提出相应的控制策略研究。可逆充电机由PWM整流器和双向DC/DC变换器构成,其中可逆PWM整流器采用前馈解耦的电压电流双闭环控制;为延长电池寿命,双向DC/DC变换器充电采用先电流再电压闭环的二阶段控制,而放电则采用电流闭环控制策略。通过可逆充电机建模以及充、放电过程的仿真表明,提出的控制策略能实现低谐波的能量双向流动,且具有抗负载波动的鲁棒性以及较高的电池充放电速度。In order to fully use the bidirectional energy flow characteristics of the electric vehicle（ EV） charging-storage-discharging station and the connected distribution network,modeling and control strategies of a key reversible is presented. A reversible charger mainly includes a PWM rectifier and a bidirectional DC/DC converter,on the one hand,based on the fed forward decoupling control,the double closed loop method of voltage and current is used for the reversible PWM rectifier. On the other hand,to extend the EV battery lifetime,a two-stage control strategy with a first current closed loop and a secondly voltage closed loop is used for its charging in the bidirectional DC/DC converter,and discharge current closed loop control is also presented. By the simulation of the charge and discharge control for the reversible charger,the results have shown that the presented control strategies can achieve the low harmonic performance of the bi-direction energy flow,as well as with a good robustness of load disturbance and high charge and discharge rates for EV battery.

关 键 词：电动汽车 充储放电站 可逆充电机 DC/DC变换器 控制策略 

分 类 号：TM76[电气工程—电力系统及自动化]