摘要
对无串联型DVR的逆变器控制策略进行研究,针对滤波电容电流内环、电压瞬时值外环的双闭环PI控制在快速性和精确电压补偿方面的不足,提出在双闭环PI控制的外环增加无模型自适应控制,形成复合控制算法,以提高控制器对信号的跟踪能力。通过Matlab/Simulink的建模仿真,表明该复合控制算法具有动态响应速度快、输出电压稳态精度高等特点。
Non-series transformer dynamic voltage restorer （ DVR） control strategy is studied.In order to improve the speed and the steady state accuracy of voltage, current double closed loop PI con-trol, a model-free control was used as a compensation to form a composite control method.In the Mat-lab/Simulink to create simulation model, the simulation results show that the composite control method has great speed and excellent steady accuracy.
出处
《工业仪表与自动化装置》
2014年第6期7-10,共4页
Industrial Instrumentation & Automation
关键词
电压跌落
动态电压恢复器
双闭环控制
无模型自适应控制
复合控制
voltage sag
dynamic voltage restorer
double closed loop control
model-free adaptive control
composite control
