kalman滤波，滤出电压中的谐波分量，判断孤岛是否发生。压缩包中包含了初始化文件和主文件。-kalman filter, filter out the harmonic component of voltage, it is judged whether there islanding. Compression package contains the initialization file and the master file.

文件是一个卡尔曼滤波估测电池SOC的程序，有matlab的simulink仿真与卡尔曼滤波算法两个文件。-File is a Kalman filter battery SOC estimation procedures have matlab simulink simulation and Kalman filter algorithm two files.

有源滤波器补偿电流谐波检测算法PQ和IP/IQ法，simulink搭建模型并且误差极小-Active filter compensation current harmonic detection algorithm PQ and IP/IQ method, simulink build model and the error is minimal