新型锁相技术在单相系统中的应用研究  

Applied Research of a New Type of Phase-Locking in Single-Phase System

作　　者：陈自强[1] 黄守道[1] 曾智波[1] 熊山[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《计算机仿真》2011年第1期315-318,共4页Computer Simulation

基　　金：教育部高等学校博士学科点专项科研基金(200805321038)

摘　　要：研究电源稳压控制系统,单相锁相技术在系统中有着重要的应用,基于瞬时无功理论的传统单相锁相环中存在延时和动态响应差等问题,针对上述问题,将改进瞬时无功理论运用在单相锁相环中。通过对两种模型分别进行理论分析和在MATLAB上建模对比,进行仿真表明,改进后的模型很好地解决了延时问题,且具有动态响应快,稳态滤波效果好,实时跟踪性和抗畸变能力强等特点,并验证了与理论分析的一致性,为工程实践提供了新的设计依据。Single-phase phase-locked in single-phase system has important applications. The traditional single- phase phase-locked loop（PLL） based on the instantaneous reactive power theory has the problems such as. delay and poor dynamic response, this article applies modified instantaneous reactive power theory to single- phase phase- locked loop. After a detailed theoretical analysis and MATLAB modeling contrast, the final simulation shows that he improved model can solve the problem of delay perfectly and it takes the characteristics of quick dynamic response, good effect of steady-state filtering, effective ability of real-time tracking and anti-distortion and so on. Therefore, the the correctness and the feasibility of the theory have been confirmed and a new design for the project practice has been provided.

关 键 词：单相锁相环 瞬时无功理论 仿真 电压畸变 

分 类 号：TM935[电气工程—电力电子与电力传动]