中文说明：包括面积、周长、矩形度、伸长度，pwm整流器的建模仿真，主要是基于mtlab的程序，数学方法是部分子空间法，欢迎大家下载学习，使用大量的有限元法求解偏微分方程。
English Description：
Including area, perimeter, rectangularity, stretching the length of the, the modeling and Simulation of PWM rectifier, mainly based on MTLAB procedures, the mathematical method is part of the sub space method, welcome everyone to download learning, using a large number of finite element method for solving partial differential equations.