基于MATLAB的脉宽调制逆变器仿真研究

he function of three-phase inverter is to convert DC into three-phase AC. it is a widely used electric energy conversion device. Taking the three-phase inverter as the research object, this paper studies the pulse width modulation strategy, uses the zero vector injection method to realize various pulse width modulation, and studies the influence of various pulse width modulation methods on the total harmonic distortion rate with the change of modulation ratio. It is concluded that the total harmonic distortion rate decreases with the increase of modulation ratio, but the modulation ratios of various pulse width modulation methods are the same, The total harmonic distortion rate is basically the same, so when choosing pulse width modulation method, the total harmonic distortion rate is not the focus of consideration, and the switching loss and reducing common mode voltage should be mainly considered.