讲述小波降噪算法，综述了阈值如何选取以及评定指标，并利用IP软核实现技术研究-About the wavelet denoising algorithm, the threshold review and assessment of indicators of how to select and use IP soft core Implementation Technology

APF的模型，采样ip-iq法进行谐波提取，PI控制作为补偿算法，三电平spwm作为调制方式，在网侧添加了LCL滤波，个人感觉效果还不错，准备再添加重复控制，在谐波提取方面采样DFT来尝试-APF model, sampling ip-iq method for harmonic extraction, PI control as compensation algorithms, three-level spwm as modulation, the network side added a L