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直流稳压电源的性能测试和优化院、部：电气与信息工程学院学生姓名：资昌龙指导教师：黄海波职称实验师专业：电气工程及其自动化班级：电气本1105班完成时间：2015年6月摘要直流稳压电源是当今社会的一大有用的发明，任何电子设备都要有一个电源供电。从大型计算机到小型计算器，所有的电子设备必须得在电源电路中工作。当然，这些方式不同的电源电路都是具有复杂性的。大型计算机的电源电路更是一个非常复杂的系统。直流稳压电源是以电子技术为理论知识，而且还是以电子、电力以及调控这三个电气工程为核心的一项技术，它更是一项十分实用的科学技术。其主要作用是把交流电转化成直流电。使用范围十分广，在生产教育以及科学研究中是不可或缺的重点部分。电源的品质是好还是坏、能否承受外界的干扰、甚至是影响之后仪器设备能否运作，这一系列必须考虑的问题是重点研究的条件因素。若是判断电源品质的优劣，那么于外部的环境等一系列因素，需要对它是否科学可靠等问题进行严格的检验；因此严格检验是否过关合格都将是非常关键的一个环节。毕业设计是设计出一个直流稳压电源并对其进行优化。通过对整流、滤波、稳压这三个模块方案对比的优化选择使设计的直流稳压电源能输出正负12V、正5V以及3V到9V可调直流电压，通过一系列的仿真检测基本符合设计要求。关键词：变压器；proteus仿真，优化性能ABSTRACTDCstabilizedpowersupplyisausefulinventionintoday’ssociety,andanyelectronicdevicecanhaveacommonpowercircuit.Fromthesupercomputertothepocketcalculator,allelectronicdevicesmustbeabletoworkinthepowercircuit.Ofcourse,thesepowercircuitswithdifferentmethodsareallverycomplicated.Thepowercircuitofsupercomputerisamorecomplicatedsystem.DCstabilizedpowersupplyisbasedonthetheoreticalknowledgeofelectronictechnology,andwiththethreeelectricalengineeringfieldsofelectronics,electricpowerandregulationasthecore,itisaverypracticalscientifictechnology.Itsfocusistheconversionofelectricalpower.Ithasawideapplicationrange,whichisnotonlythebasicprofessionalknowledgeinthefieldsofproduction,educationandscientificresearch,butalsoanindispensiblepartinmanyinstrumentsanddevices.Thequalityofpowersupplywilldecidewhetheritcanstandtheexternaldisturbanceandaffectthelaterinstrumentoperationandsystemregulation,andthisseriesofissuesmustbeconsidered,becausetheyaretheconditionsandfactorsthatshouldbeemphaticallystudied.Inordertodeterminethequalityofpowersupply,aseriesofexternalenvironmentfactorsshouldbeconsidered,andstrictexaminationshouldconductedtodetermineifitisscientificandreliable;therefore,thestrictexaminationofqualityisaverycriticallinkDuringthegraduationprojectdesign,firstofall,wewillintroducethecurrentdevelopmentofpowersupplyandthekeyswitchingpowersupplies;then,wewillselectthemaindataanddetectionmethodinaccordancewiththecharacteristicsofdesignedpowersupply;aDCstabilizedpowersupplyisdesignedforstrengthening.Duringthedesign,thebridgerectifiercircuitisadoptedastherectifiercircuit;thefiltercircuitconsistsofthecapacitancefiltercircuit,three-sectioncontrollableintegratedvoltage-regulatortubeandsliderheostatof2000ohm.Throughaseriesofsimulationsanddetections,thefinalprojectdesignbasicallyachievesoptimizationofDCstabilizedpowersupply.Keywordstransformer;proteussimulation,performanceoptimization目录1绪论.............................................................11.1直流稳压电源的概念..........................................11.2直流稳压电源的发展..........................................11.3直流稳压电源的分类..........................................11.4直流稳压电源的技术指标......................................12设计的目的和任务.................................................32.1设计的目的..................................................42.2设计的任务..................................................42.3设计的思路..................................................43方案分析与选择...................................................53.1电源变压器（Transformer）...................................53.2整流电路（rectifyingcircuit）..............................63.2.1单相半波整流电路.....................................63.2.2单相全波整流整流电路.................................73.2.3桥式整流电路.........................................83.2.4整流电路方案选择....................................103.3滤波电路(Filtercircuit)...................................103.3.1电感滤波电路........................................113.3.2RC-π型滤波电路.....................................113.3.3采用LC滤波电路.....................................123.3.4采用电容滤波电路....................................123.4稳压电路(Regulatorcircuit)................................143.4.1串联反馈式稳压电路..................................143.4.2三端固定式集成稳压器................................153.4.3三端可调式集成稳压器................................184性能优化方案....................................................214.1±12V直流电压对称输出电路.................................214.1.1电路设计............................................214.1.2电路元器件选择......................................214.2+5V直流电压输出电路.......................................224.2.1电路设计............................................224.2.2电路元器件选择......................................224.3（+3～+9)V直流电压连续可调输出电路.........................234.3.1电路设计............................................234.3.2电路元器件的选择....................................245性能测试及仿真..................................................265.1电路仿真...................................................265.1.1±12V直流电压输出电路仿真..........................265.1.2+5V直流电压输出电路仿真............................265.1.3(+3～+9)V直流电压连续可调输出电路仿真...............275.1.4三档直流电压输出电路................................285.2性能测试...................................................275.2.1测试指标............................................275.2.2测试方法............................................295.2.3仿真测试结果........................................30结束语.............................................................31参考文献.............................