基于Simulink的SPWM三相逆变器仿真分析

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中图分类号：TM41 文献标识码：A 文章编号：2096-4706（2025）17-0028-05

Abstract：The three-phase inverter converts Direct Current （DC） into Altermating Current （AC） to provide a stable power supply for traction motors.The SPWM（Sinusoidal Pulse Width Modulation）control technique isused to generate pulse signals by modulating sinusoidal andtriangular waves，thereby optimizing output waveforms.A simulation model that incorporates IGBT modules，DC power supply，thre-phase loads，and an LC filtercircuitisconstructed.The output voltage waveforms， harmoniccharacteristis，ndconversioneffciencyunderdferentconditionsareaalyed.ResultsdemostratethatteLfler circuit significantly improves output waveform quality， reducing the Total Harmonic Distortion （from 79.4% to 1.16% ）while achievinghighconversionefciencyThisstudyprovides theoreticalsupportforthestableoperationofvehicle tractionpower supply systems.It should focus on further design optimization to adapt to complex operating conditions in the future.

Keywords： SPWM; inverter; Total Harmonic Distortion （THD）; conversion efficiency

0 引言

随着电力电子技术的不断发展，三相逆变器在现代电力系统中的应用日益广泛，例如电动汽车、轨道交通等[1]。（剩余5523字）