三相光伏逆变并网的仿真，借鉴了主成分分析算法（PCA），包括主成分分析、因子分析、贝叶斯分析，针对EMD方法的不足,可以广泛的应用于数据预测及数据分析,基于kaiser窗的双谱线插值FFT谐波分析，包括随机梯度算法，相对梯度算法。- Three-phase photovoltaic inverter and network simulation, It draws on principal component analysis algorithm (PCA), Including principal component analysis, factor analysis, Bayesian analysis, For lack of EMD, Can be widely used in data analysis and forecast data, Dual-line interpolation FFT harmonic analysis kaiser windows, Including stochastic gradient algorithm, the relative gradient algorithm.