基于单周期控制的三相VIENNA+PFC电路设计

论文题目：基于单周期控制的三相VIENNAPFC电路设计专业：电力电子与电力传动硕士生：雷云(签名)指导教师：刘树林(签名)摘要随着电力电子设备的广泛使用，其在电网中产生的大量谐波严重影响了供电质量、增加了电网损耗，严重情况下会造成设备异常甚至损坏。利用功率因数校正(PFC)技术可以有效降低谐波含量，减少谐波对电网的污染。近年来，针对三相大功率应用场合的三相PFC技术成为业界的研究热点之一。本文首先对三相PFC技术进行了简要的介绍，总结了目前各种常用的三相有源功率因数校正电路的拓扑与控制方法。在此基础上对单周期控制的三相VIENNA结构PFC电路进行研究，分析了单周期控制的基本原理并介绍了三相三开关三电平(VIENNA)拓扑。对该拓扑解耦后的串联双Boost电路进行数学建模并对其工作过程进行分析，得出该控制方式下电路的核心控制方程。并以单周期控制芯片ICE2PCS01为核心，提出了控制电路的详细设计方法。根据以上分析，给出了单周期控制的三相VIENNA结构PFC电路的整体设计方案，其中包括主电路中的输入电感、开关管、功率二极管、输出滤波电容等元器件参数设计及选型，控制电路中的区间选择电路、输入多路开关电路、输出逻辑电路设计。最后，本文研制了一台2kW单周期控制的三相VIENNA结构PFC电路样机。实验结果表明，该电路可以很好地实现功率因数校正目的，并具有良好的性能。理论分析与样机实验均验证了该电路设计的可行性。关键词：功率因数校正；VIENNA整流器；单周期控制；三相PFC研究类型：应用研究Subject:DesignonPFCCircuitofThreePhaseVIENNAStructureBasedonOne-cycleControlSpecialty:Powerelectronic&PowerdrivesName:LeiYun(Signature)Instructor:LiuShulin(Signature)ABSTRACTWiththewideuseofpowerelectronicequipment,theplentyofharmonicsgeneratedinthepowergridseriouslyaffectthequalityofpowersupply,increasethenetworkloss,seriously,cancauseequipmentabnormalandevendamaged.Takeadvantageofpowerfactorcorrection(PFC)technology,itcaneffectivelydropstheharmoniccontent,reducestheharmonicpollutiontopowergrid.Inviewofthethree-phasehighpowerapplications,thethree-phasePFCtechnologyhasbecomeoneoftheresearchhotspotinrecentyears.Firstly,thethree-phasePFCtechnologyisbrieflyintroducedinthispaper,thecommonthree-phaseactivepowerfactorcorrectioncircuittopologysandcontrolmethodsaresummarized.Onthisbasis,thePFCcircuitofthree-phaseVIENNAstructurebasedonone-cyclecontrolisresearchedinthepaper,thebasicprincipleofone-cyclecontrolisanalysedandthethree-phaseVIENNAtopologyisintroduced.Fromthemathematicalmodelingandtheworkingprocessanalysisofthetandemdoubleboostcircuitwhichdecouplingafterthistopology,thecircuitcorecontrolequationofthecontrolmodeisgiveninthepaper.Andwithone-cyclecontrolchipICE2PCS01asthecore,thedetaileddesignmethodofthecontrolcircuitisproposed.Accordingtotheaboveanalysis,theoveralldesignschemeaboutPFCcircuitofthethree-phaseVIENNAstructurebasedonone-cyclecontrolisgiveninthepaper,includingthedesignandselectionofthemaincircuitcomponentparameters,suchastheinputinductor,switchtube,powerdiode,outputfilteringcapacitance,andtheschematicdesignofthecontrolcircuit,suchastheintervalselectioncircuit,multi-channelswitchinputcircuitandoutputlogiccircuit.Finally,a2kwPFCcircuitofthree-phaseVIENNAstructurebasedonone-cyclecontrolisdevelopedinthispaper.Theexperimentalresultsshowthatthiscircuithasgoodperformanceandachivesgoodpowerfactorcorrectioneffect.Boththeoreticalanalysisandprototypeexperimentverifythefeasibilityofthecircuitdesign.Keywords:APFCVIENNARectifierOneCycleControlThree-phasePFCThesis:ApplicationResearch目录目录1绪论........................................................................................................................................11.1课题的背景及研究的意义.............................................................................................11.1.1课题的研究背景......................................................................................................11.1.2课题的研究意义......................................................................................................31.2本课题的国内外研究动态及发展趋势.........................................................................41.2.1三相PFC的研究动态.............................................................................................41.2.2三相PFC的发展趋势.............................................................................................51.3本课题研究内容与研究目标.........................................................................................62三相PFC电路组成及原理...................................................................................................82.1谐波与功率因数的概述.................................................................................................82.1.1谐波及功率因数的定义..........................................................................................82.1.2功率因数校正技术的分类....................................................................................102.2三相PFC电路的拓扑结构..........................................................................................112.3三相PFC电路的控制方法..........................................................................................162.3.1DCM工作模式.......................................................................................................172.3.2CCM工作模式.......................................................................................................172.3.3三相PFC控制方法的选择...................................................................................212.5本章小结.......................................................................................................................213单周期控制的三相VIENNAPFC电路分析.....................................................................223.1单周期控制原理...........................................................................................................223.1.1单周期控制技术的基本原理................................................................................223.1.3单周期控制PFC