%0 Journal Article
%T 一种兼容单相系统的通用软件锁相环设计<br>A General Software Phase-Locked Loop Compatible with Single-Phase System
%A 刘长江
%J Journal of Electrical Engineering
%P 13-21
%@ 2333-5424
%D 2022
%I Hans Publishing
%R 10.12677/JEE.2022.101002
%X 大功率车载充电机V2G工作模式，进行并网时，会存在单相三相系统切换的应用场景。本文提出一种通用型三相系统锁相环控制方法，该方法将单相系统视为三相不平衡故障的一种特例，基于移相控制的方式实现电压信号的正负序分离，设计出通用型软件锁相环，使其不仅能够适用于三相系统，也能够实现单相系统的兼容。最后通过模型仿真，针对三相电压不平衡和单相三相系统切换的应用场景，仿真验证了该锁相环设计的正确性。<br />
When the high-power onboard charger works as V2G mode, there will be an application scenario of single-phase three-phase system switching. In this paper, a general three-phase system phase- locked loop control method is proposed. This method regards the single-phase system as a special case of three-phase unbalanced fault, and realizes the positive and negative sequence separation of the voltage signal based on the phase-shift control method. The universal software phase- locked loop makes it not only suitable for three-phase systems, but also compatible with single- phase systems. Finally, through model simulation, for the application scenarios of three-phase voltage unbalance and single-phase three-phase system switching, the simulation verifies the correctness of the phase-locked loop design.
%K 锁相环，单相，三相，兼容，移相控制<br>Phase-Locked Loop
%K Single-Phase System
%K Three-Phase System
%K Compatible
%K Phase Shift Control
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=49479