摘要
为缓解电动汽车快速充电对电网的冲击,研究在直流快速充电站(DC fast charging station,DC-FCS)应用永磁同步电机(permanent magnet synchronous motor,PMSM)式飞轮储能系统(flywheel energy storage system,FESS)。在传统PMSM双闭环控制的基础上提出基于负载电流补偿与转速反馈的控制策略。首先建立电动汽车直流快速充电站负荷数学模型,对其冲击特性进行分析。然后阐明所提飞轮储能系统控制策略,并设计配有PMSM-FESS的直流快速充电站控制系统。最后在Matlab/Simulink软件平台上搭建配有FESS的快速充电站系统仿真模型。仿真结果表明:所提PM SM-FESS控制策略可有效限制电网功率上升速率,补偿快速充电站母线电压跌落;即使面临多台电动汽车短时间连续接入的情形,所提控制策略仍可有效缓解直流快速充电站对电网的冲击,降低直流母线电压跌落幅度。
In order to buffer the impact of fast charging of electric vehicles on the power grid, permanent-magnet synchronous flywheel energy storage system(PMSM-FESS) used in DC fast charging station(DC-FCS) is studied. On the basis of traditional PMSM double closed-loop control, a control strategy with load current compensation and speed feedback is proposed. Firstly, the load mathematical model of DC fast charging station for electric vehicles is established, and its impact characteristic is analyzed. Then the control strategy of FESS is clarified, and a DC fast charging station system with PMSMFESS is designed. Finally,simulation model of a fast charging station system with FESS is built on Matlab/Simulink software platform. Simulation results shows that FESS can effectively limit the rise slope of the grid output power, compensate for bus voltage sag of the fast charging station;Control strategy proposed in this paper for PMSM-FESS can still exhibit good power buffering performance for grid, even the system is confronted with continuous load on multiple electric vehicles.
作者
王成龙
王育飞
薛花
WANG Chenglong;WANG Yufei;XUE Hua(College of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)
出处
《电力建设》
北大核心
2019年第3期51-58,共8页
Electric Power Construction
基金
上海市科技创新行动计划项目(16DZ0503300)
上海市科委地方能力建设计划项目(16020500900)~~
