pwm整流器谐波抑制仿真分析

摘要PWM整流器由于其优越的性能广泛应用于人们日常生活生产中。而三相作为PWM整流器家族中重要的一员，因其输入电流正弦性好，可获得高功率因数，能量可实现双向流动等特性而广受关注，本文重点分析了谐波抑制及三相的原理及其直接电流控制策略，并做了系统的MATLAB仿真研究。PW调制方法的电压利用率高，网侧电流谐波小。通过对电压空间矢量进行合理地排序，减小了开关损耗，同时还达到改善网侧电流波形的目的。PW控制技术的发展与应用为变流器的发展带来了其所未有的基于，将PWM控制技术与传统变流装置结合从而形成新型的变流器，逐渐成为变流装置的发展方向。经过多年的发展，变流器已获得了及其优良的性能与效果。关键词：PWM整流器，仿真分析，MATLAB1ABSTRACTPWM rectifier is widely used because of its superior performance in the production ofPeople's Daily life.And three phase as an important member of the family of PWM rectifier,because of its good sinusoidal input current,high power factor can be obtained,the energy canrealize two-way flow features and wide concern,this paper analyzes the harmonic suppression andthe principle of the three-phase direct current control strategy,and the MATLAB simulation of thesystem.PWM modulation methods of high voltage utilization ratio,the net side current harmonic issmall.Based on voltage space vector in order reasonably,reduce the switching loss,but alsoachieve the purpose of improving the net side current waveform.The development and applicationof the control technology has brought the development of the converter based on what it has notbeen based on.The PWM control technology is combined with the traditional converter device toform a new type of converter,which gradually becomes the development direction of theconverter device.After years of development,current transformer has been obtained and itsexcellent performance and effect.Key words:PWM rectifier:Simulation analysis:MATLAB、2目录第一章绪论....…11.1课题的研究背景与意义..1.1.1谐波的危害和抑制...21.1.2PWI整流器国内外研究现状...........21.2PW整流器的控制技术.....…·1.3本文的主要研究内容.....第二章三相PWM整流器原理及拓扑结构..........62.1PWM整流器的基本原理..…62.2PWM整流器的拓扑结构........82.2.1单相全桥P整流器拓扑结构................82.2.2三相半桥PW整流器拓扑结构............·.·92.3本章小结.……11第三章三相电压型PWM整流器的建模和仿真...............123.1算法实现.123.2主电路设计..173.2.1直流电压选取183.2.2网侧电感值设计.……………183.2.3直流侧电容设计.......19第四章电压空间矢量控制的三相VS的仿真研究............204.1电流解耦.…204.2双环反馈PI参数设定..214.3整流状态的仿真结果...234.4 SVPWM与SPWM效果对比...244.5本章小结....25结论26致谢.…281