摘要
为实现并网逆变器输出电流对指令电流信号的无静差跟踪,介绍了一种新型重复控制器设计方法,采用改进型内模和插入式结构,以获取良好的稳定性和优异的动态响应速度,建立被控对象的模型。分析了新系统的稳定性条件和性能,介绍了重复控制器零相移低通滤波器设计方法。通过合理配置,提高了系统的稳定性,简化了补偿器设计。利用Matlab/Simulink软件对理论推导和分析进行了仿真验证。仿真结果表明,控制方式可降低并网电流谐波畸变率并兼具良好的动态和静态性能。
In order to realize the no steady-state error tracking of AC current signal, a novel method for a plug- in repetitive controller was introduced. The plug-in structure and improved inner model not only ensures stability but also improvs the dynamic response speed. It analyzed the system＇ s stability conditions and dynamic performance in detail, and introduced the design method of zero phase-shift filter for repetitive controller. The reasonable configuration filter can improve the system stability and simplify the compensator design. The theoretical derivation and analysis by Matlab/Simulink software were verified. This leads to a very low total harmonic distortion and has good dynamic and static performances.
出处
《低压电器》
2013年第11期32-36,共5页
Low Voltage Apparatus
关键词
逆变器
重复控制
插入式结构
零相移
补偿器
inverter
repetitive control
plug-in
zero phase-shift
compensator
