资源描述：
《单相spwm逆变电源仿真设计》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、摘要随着电力电子技术及电力半导体器件的飞速发展，国外发达国家大量推广采用了逆变技术的电源，促进了逆变式电源的发展。作为更新换代的革命性电源，在可靠性和性价比以及高效节能方面，都有着广泛的市场和发展前景。相比于传统的电压型逆变电路，采用正弦脉冲调制（SPWM）的方法就可在把直流变成交流的同时，既能调压，又能调频。实际上PWM逆变电路的实质就是依靠调节脉冲宽度改变输出电压，通过改变调制周期达到改变输出频率的目的。针对现代各行各业对电气设备控制性能日益提高的要求,利用MATLAB仿真软件对采用SPWM脉宽调制技术的开环逆变系统和闭环逆变建模系统进行了仿真。证明了单相SPWM逆变电路，相比典
2、型电压型逆变电路，其输出没有静态误差，有良好的输出波形，输出电压的THD（电流谐波畸变率）小并且是稳定的系统，有很好的工作特性，并且证明了SPWM闭环逆变电路具有良好的输出特性。关键词逆变,SPWM,MATLAB,仿真AbstractWiththerapiddevelopmentofthepowerelectronicandelectricalinstrumentofsemiconductor,thedevelopedcountryhavewidelydevelopedandadoptedtheelectricalsource,basedoninvertertechnology,wh
3、ichpropeledthedevelopmnetofinverseelectricalsource.Asanovelandrevolutionaryelectricalsources,ithasasweepingmarketandmoredevelopingroominreliablity,performanceandsavingenergyefficiently.Comparedwiththetraditionalvoltageinvertercircuit,theinvertercircuitapplyingSPWM(SinusoidPulseWidthModulation)t
4、echnologycannotonlyadjustthevoltagebutalseadjustthefrequency,whileturnDirectcurrentintoAactivecurrent.Infact,theessenceofthecircuitapplyingSPWMtechnologyistochangetheoutputvoltagebyadjustingthepulsewidthandreachingtheaimofchangeoutputfrequencybyaltermodulationperiod.Tomeettheincreasingdemandsfo
5、rthecontrollingperformanceoftheelectricalequipmentfromalltradesandprofessions.Andtheresearchisconductedtoexplorehowtosimulatetheclosed-loopandopen-loopinvertersystemapplyingSPWMtechnologybyusingMATLABsimulationsoftware.Itarguesthatsingle-phaseSPWMinversepowersources,comparedwiththetraditonalvol
6、tageinversecircuit,itsoutputdonothavestaticerrorbuthavewelloutputwave.MoreoverTHD(TotalHarmonicDistortion)ofoutputvoltageissmallandthecircuithavegoodperformance.Inaword,theclosed-loopinvertersystemapplyingSPWMtechnologyhavegoodoutputcharacter.Keywordsinverter,SPWM,MATLAB,simulation目录摘要IAbstract
7、II1绪论11.1逆变电源的发展和意义11.2本文的主要工作12逆变电路22.1逆变的概念22.2有源逆变电路22.3无源逆变电路33PWM控制技术53.1PWM控制技术基础53.2PWM控制方式64MATLAB的基本组成和操作104.1Simulink和PowerSystem工具箱简介104.3Simulink/PowerSystem系统模块的操作124.4Simulink/PowerSystem子系统的建立144.5Simulink/Powersyst
