摘要
以直流电压为控制目标对基于虚拟同步机(VSG)的三相整流器进行了小信号建模分析,并基于V SG下垂控制方法提出了一种三相电网电压等幅跌落下的低电压穿越控制方法,有效实现了系统在低电压穿越控制模式与下垂控制模式间的无扰切换,从而保证了电网电压的稳定与负载的正常运行。仿真和实验结果验证了控制策略的正确性。
Small-signal model of a three-phase rectifier based on virtual synchronous generator(VSG)is analysed with DC voltage as the control target.To effectively realize the undisturbed switching between low voltage ride through control mode and droop control mode,a low voltage ride through control method of three-phase voltage drop is proposed according to the droop control method of VSG,which also ensure the grid voltage stability and the normal operation of the load.Simulation and experimental results verify the validity of the control strategy.
作者
马龙飞
张禄
李香龙
王雪瑞
MA Long-fei;ZHANG Lu;LI Xiang-long;WANG Xue-rui(State Grid Power Company of Beijing,Beijing 100031,China;不详)
出处
《电力电子技术》
CSCD
北大核心
2021年第3期44-47,100,共5页
Power Electronics
关键词
虚拟同步机
三相整流器
下垂控制
低电压穿越
virtual synchronous generator
three-phase rectifier
droop control
low voltage ride through
