摘要
超级电容储能装置应用于城轨交通供电系统具有节能稳压效果,并且其对供电系统的运行稳定性也会产生重要影响。本文基于小信号分析法分析了超级电容储能装置单个子系统的运行稳定性,并提出电流反馈补偿虚拟并联电阻的方法,降低超级电容储能装置的闭环输出阻抗,改善应用于城轨交通供电系统的超级电容储能装置运行稳定性。仿真和实验结果验证了本文提出的电流反馈补偿方法的有效性。
The application of super-capacitor energy storage device in urban rail power supply system can save energy and improve voltage profile, and will make a real difference to the operation stability of urban rail power supply system. Firstly, this paper analyzed the operation stability of single super-capacitor energy storage de- vice through small signal analysis. Then, a practical method by using electric current feedback compensation to emulate virtual shunt resistor was put forward to reduce the closed-loop output impedance of the super-capaci- tor energy storage device and improve the operation stability of the device. Simulation and experimental results validated the effectiveness of the proposed current feedback compensation method.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2016年第3期59-65,共7页
Journal of the China Railway Society
关键词
超级电容
稳定性
反馈补偿
输出阻抗
城轨交通供电系统
super-capacitor
stability
feedback compensation
output impedance
urban rail power supply system
