中文摘要：

针对于传统数值算法在求解多电平逆变器特定次谐波消除脉宽调制（SHEPWM）消谐模型时对开关角度初值依赖程度较高的问题，提出了采用遗传算法（GA）对多电平逆变器SHEPWM消谐进行求解的方法。该方法在无需初值的情况下，仅通过GA的优化计算即可得到满足各种消谐效果的开关角度解集。最后进行了仿真和实验验证，结果验证了该方法和所求取的开关角度解正确有效。

英文摘要：

According to the problem that traditional numerical algorithm depend high on the initial value of switching angles.A method using genetic algorithms（GA） is proposed for solving nonlinear equations of multi-level inverter selected harmonic elimination pulse width modulation（SHEPWM）.This method solve nonlinear equations without switching angles initial value.This method is able to get the exact solutions of nonlinear equations simply by the GA optimization calculation.Finally the method is verified by simulation and experiment, simulation and experimental results demonstrate the numerical solution of the method and the strike is correct and effective.