三相光伏逆变并网的仿真，采用了小波去噪的思想，插值与拟合，解方程，数据分析，从先验概率中采样，计算权重，有较好的参考价值，用于信号特征提取、信号消噪。- Three-phase photovoltaic inverter and network simulation, Using wavelet denoising thought, Interpolation and fitting, solution of equations, data analysis, Sampling　a priori probability, calculate the weight, There are good reference value, For feature extraction, signal de-noising.