实现三电平逆变，达到直流电变化为有两头波动的交流波形，此电路稍微修改一下时间，就可以转化为整流电路(To achieve three level inverter, to achieve direct current changes for the two sides of the AC wave fluctuations, this circuit slightly modified time, you can translate into rectification circuit)

风电机组电压波动与闪变的发射强度与传播规律simulink仿真(The voltage fluctuation of wind power unit and the emission intensity and propagation rule simulink simulation.)

二维波动方程数值计算（关键：怎么运用i,j,k三个指标建立循环） ，对有限差分法的推导(Two dimensional wave equation numerical calculation (key: how to use I, J, K three indicators to establish cycle), the derivation of the finite difference method.)