基于dq变换的锁相环设计与仿真  

Design and Simulation of Phase-locked Loop Based on dq Transform

作　　者：何攀[1] 席自强[1] 

机构地区：[1]湖北工业大学太阳能高效利用湖北省协同创新中心,湖北武汉430068

出　　处：《湖北工业大学学报》2017年第5期93-95,共3页Journal of Hubei University of Technology

摘　　要：针对一般锁相环在电网电压波动时存在锁相误差的问题,提出了一种基于dq变换的锁相环新方案,并对锁相环参数进行了整定。对于电网电压频率变化、相位变化以及谐波注入的影响,利用matlab进行了仿真分析。仿真结果表明,新方案有很好的跟踪效果,跟踪速度快,精度高,能较好实现相位锁定。Aiming at the problem of phase-locked error in the voltage fluctuation of the general phaselocked loop,a new scheme of phase-locked loop based on dq transform is proposed,and the parameters of phase-locked loop are set.For the voltage frequency conversion,phase change and the effect of harmonic injection,the simulation analysis is carried out by using matlab.The simulation results show that,the proposed phase-locked loop has good tracking performance,fast tracking speed and high precision,and can realise phase locking.

关 键 词：电压波动 dq变换 锁相环 

分 类 号：TM464[电气工程—电器]