考虑到不平衡电网条件下，传统锁相环的局限性，这里比较了几种基于正负序分离的锁相环着重基于陷波器的提取方式-Taking into account the unbalanced grid conditions, the limitations of the traditional PLL, where positive and negative sequence based on comparison of several separat

基于SOGI（2阶广义积分器）的单相锁相环simulink仿真，参考《光伏与风力发电系统并网变换器》周克亮译 71页-Based on SOGI (2-order generalized integrator) single-phase phase-locked loop simulink simulation, refer to Grid Converters for Photovoltaic and Wind Power Syst

二阶广义积分器加上反馈的模型，单一的二阶广义积分器会让信号一直放大，加上反馈可以让信号稳定- U4E8C u9636 u5E7F u4E49 u79EF u7EF u5206 u5206 u5668 u52A0 u4E0A u53CD u9988 u7684 u6A21 u578B uFF0C u5355 u4E00 U4F1A u8BA9 u4FE1 u53F7 u53F7 u4E

pll-sogi which is used to cap the phase of U