三相光伏逆变并网的仿真，针对EMD方法的不足,多元数据分析的主分量分析投影，是学习PCA特征提取的很好的学习资料，FIR 底通和带通滤波器和IIR 底通和带通滤波器，分析了该信号的时域、频域、倒谱，循环谱等。- Three-phase photovoltaic inverter and network simulation, For lack of EMD, Principal component analysis of multivariate data analysis projection, Is a good learning materials to learn PCA feature extraction, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc.