The performance of the electric vehicle is improved greatly in which the harmonic wave of output voltage, power loss and torque pulsation of the system are decreased by controlling the switch angles.

• 它运用规则采样法产生正弦脉宽调制波，通过开关角的控制抑制逆变器输出电压中的谐波分量，降低了电动机的损耗和转矩脉动，使电动车的运行性能得到了较大改善。