单相正弦脉宽调制逆变电源的设计--毕业设计论文.doc

--摘要电源是各种电子设备的核心，它有如人体的心脏，是所有电类设备的动力。现代开关稳压电源广泛用于直流电源，交流电源，医疗和照明电源，雷达高压电源，音响和视频电源等。本文设计的逆变电源属于交流电源(AC-DC-AC逆变)，采用电压反馈控制。其主电路采用的是Boost电路和全桥电路的组合。控制电路采用了2片集成脉宽调制电路芯片，一片用来产生PWM波，另一片与正弦函数发生芯片做适当的连接来产生SPWM波，集成芯片比分立元器件控制电路具有更简单，更可靠的特点和易于调试的优点。本文详细的分析了该逆变电源的工作过程，并推导了重要公式。最后对该逆变电源进行了计算机仿真和样机实验，验证了其可行性和有效性。关键词：逆变器正弦脉宽调制场效应管ABSTRACTPoweristhecoreofallkindsofelectronicequipment,itislikethehumanheart,allelectricalequipmentisthedrivingforce.Steadyvoltagepowersupplyofmodernswitchinghasbeenappliedinthefollowingaspectswidely.TheyareDCpowersupply，ACpowersupply，powersupplyofmedicaltreatmentandlighting，highvoltagepowersupplyofradar，powersupplyofsoundandvideofrequencyandsoon.Single-PhaseSinusoidalPulseWidthModulationInverterPowerSupplyinthispaperbelongstoACpowersupply(AC-DC-ACconvert).Controlmodeadoptsfeedbackofvoltagecontrol.Themaincircuitismadeupofcompoundingofboostandthefull-bridgecircuit.Thecontrolcircuitadoptstwochipsofintegratedpulsewidthmodulation.OneproducesPWMwaveform.TheotherconnectschipofproducingsinusoidalsignalproperlywhichbringsSPWMwaveform.integratedchipismoresimple，reliableandlaboratorialthandiscretecomponent.Theoperationofinverterpowersupplyisthoroughlyanalyzedandsomeimportantformulasarededuced.Finally，theprincipleofoperationareillustratedandverifiedonemulationandexperimentalresults.Keywords:inverterSPWMMOSFET目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc202104627"第一章绪论PAGEREF_Toc202104627\h1HYPERLINK\l"_Toc202104628"1.1电源技术概述PAGEREF_Toc202104628\h1HYPERLINK\l"_Toc202104629"1.2逆变电源结构及控制技术的发展及现状PAGEREF_Toc202104629\h1HYPERLINK\l"_Toc202104632"1.3选题的意义PAGEREF_Toc202104632\h3HYPERLINK\l"_Toc202104633"1.4主要内容和章节安排PAGEREF_Toc202104633\h3HYPERLINK\l"_Toc202104634"第二章PWM波形工作原理PAGEREF_Toc202104634\h4HYPERLINK\l"_Toc202104635"2.1PWM波形的基本原理PAGEREF_Toc202104635\h4HYPERLINK\l"_Toc202104636"2.2PWM型逆变电路的控制方式PAGEREF_Toc202104636\h6HYPERLINK\l"_Toc202104637"2.3SPWM波形的生成方法PAGEREF_Toc202104637\h7HYPERLINK\l"_Toc202104638"第三章单