九开关变换器驱动的双Y移30°永磁同步电机SVPWM算法

Nine-switch Converter SVPWM Algorithm for Dual Y Shift 30°PMSM

在双Y移30°永磁同步电机电压矢量的基础上,提出一种九开关变换器SVPWM算法。该算法相比于十二开关变换器最大四矢量SVPWM算法,不仅减少3个开关管,而且降低了开关损耗。针对九开关变换器采样周期过快,会导致直流侧母线电压短路的缺点,提出死区调制策略。仿真结果表明,该算法能够有效地应用于双Y移30°永磁同步电机。

A nine-switch converter space vector pulse width modulation(SVPWM)algorithm was proposed based on the dual Y shift 30°permanent magnet synchronous motor(PMSM)voltage vector.Compared with the biggest four vectors of the twelve-switch converter SVPWM algorithm,the proposed algorithm not only reduces three switch tubes,but also reduces switching loss.The dead zone modulation strategy was proposed aiming at the rapid sampling period of the nine-switch converters which can lead to the voltage short-circuit of the DC side.The simulation results show that the proposed algorithm can effectively applied to dual Y shift 30°permanent magnet synchronous motor.