摘要
传统锁相环无畸变电压的抑制能力,因而在畸变电压条件下会得到错误的相位信息。而对于需要系统电压同步的电力电子装置,相位信息的正确与否对控制性能有极大的影响。提出了一种基于智能PI控制的软件锁相环,通过同步旋转坐标跟踪原理,达到相位锁定的目的。建立了试验系统,对提出的控制策略进行了验证。试验结果表明,该软件锁相环的动态响应速度快,稳态性能好,对畸变电压有很强的抑制作用。
Traditional PLL is unavoidably affected by the distorted voltages and thus leads to wrong phase angle outputs.Phase angle of the utility voltage which is obtained by PLL （Phase Locked Loop） plays a most important role in the operation of power electronic devices.Operation of an intelligent PI control based soft phase locked loop system is presented.All analytical results are verified by experiments.The merits of high-speed, robust and strongly restraining ability to distorted voltage make it being widely used in power electronic devices.
出处
《电力电子技术》
CSCD
北大核心
2007年第7期47-49,共3页
Power Electronics
关键词
电力电子技术
锁相环控制/畸变电压
瞬时相位
power electronic
phase locked loop control / distorted voltage
utility angle
