使用大量的有限元法求解偏微分方程，三相光伏逆变并网的仿真，PLS部分最小二乘工具箱,对于初学matlab的同学会有帮助，关于小波的matlab复合分析，相参脉冲串复调制信号，使用起来非常方便。- Using a large number of finite element method to solve partial differential equations, Three-phase photovoltaic inverter and network simulation, PLS PLS toolbox, Matlab for beginner students will help, Matlab wavelet analysis on complex, Complex modulation coherent pulse train signal, Very convenient to use.