基于MATLAB的三电平逆变器SVPWM仿真研究

摘要

The topology of three-phase three-level neutral-point-clamped inverter was presented,with the merit of the three-level inverter.Aiming at the control features of inverter analysed and the SVPWM（Space Vector Pulse Width Modulation）algorithm was chosen for the flexibility superiority and Simulink tools was used to build a simulation of SVPWM control algorithm.This algorithm was applied to the asynchronous motor.The simulation results show that AC current has a good sinusoidal wave and sound sector judgment,this novel method offers a new approach for designing and debugging.%介绍三相三电平二极管中点钳位逆变器（NPC）的拓扑结构,分析三电平逆变器的优点.针对逆变器控制特点,利用空间电压矢量控制算法（SVPWM）灵活性的优势,在Simulink工具箱中搭建SVPWM控制算法仿真模型;该算法与异步电机相结合,仿真结果表明,交流测电压正弦波形度良好,扇区判断结果正确,最后给出了系统仿真模型,为实际控制系统设计和调试提供了理论依据.