双端控制开关电源设计

洛阳理工学院毕业设计（论文）题目＿＿双端控制开关电源设计＿2013年4月22日洛阳理工学院毕业设计（论文）I双端控制开关电源设计摘要随着科学技术的飞速发展，开关电源技术得到了广泛的应用，传统的开关电源已不能满足现代工业的发展需要，因此对开关电源的性能也提出了更高的要求。全桥变换器容易到达较高的输出功率，易实现软开关、且效率高、功率管承受的电压低等优点，适用于大功率工业用电源，如焊接电源、电解电源等。本文介绍了由UC3524组成的它激式全桥移相零电压（ZVS）开关电源，ZVS技术能使电路在高频的情况下能很大程度上减小开关损耗，提高电路工作效率，另外，我在UC3524的11脚和14脚的输出端分别加入推挽驱动放大器，能够大大增加输出功率。另外，本文详细阐述了整流电路、逆变电路、的工作原理和具体的工作状态，零电压开关技术（ZVS）在移相全桥变换电路中的应用，分析了电路原理、工作模态、开通及关断的过程和实现条件，最后对整个设计做了总体的分析。关键词：全桥移相控制、零电压开关技术、推挽驱动放大器洛阳理工学院毕业设计（论文）II英文题目ABSTRACTWiththerapiddevelopmentofscienceandtechnology,switchingpowersupplyhasbeenwidelyused,thetraditionalswitchingpowersupplycan'tmeetthedevelopmentneedsofmodernindustry,thereforetheperformanceoftheswitchpowersupplyisalsoputforwardhigherrequest.Fullbridgeconverteriseasytoreachhighoutputpower,andhighefficiency,easytoachievesoftswitch,thepowertubeunderlowvoltage,suitableforhighpowerindustrialpowersupply,suchastheweldingpowersupply,electrolyticpowersupplyandsoon.ComposedofUC3524itwereintroducedinthispaperexcitationtypefullbridgephaseshiftingzerovoltage(ZVS)switchingpowersupply,theZVStechnology,makethecircuitinthecaseofhighfrequencycanlargelyreducetheswitchloss,improvetheworkefficiencyofthecircuit,theother11feetand14feetinUC3524outputjoinpush-pulldrivingamplifier,respectively,toachievethepurposeofincreasingpoweroutput.Inaddition,thispaperexpoundsontherectifiercircuit,invertercircuit,workingprincipleandconcreteworkingcondition,zerovoltageswitching(ZVS)technologyintheapplicationofphase-shiftfullbridgecommutationcircuit,analyzesthecircuitprinciple,workingmode,openedandshutoffprocessandtheimplementationcondition,andfinallytothewholedesignhasmadetheoverallanalysis.KEYWORDS:fullbridgephaseshiftingcontrol,zerovoltageswitchingtechnology,push-pullamplifierdrivers.洛阳理工学院毕业设计（论文）III目录前言................................................................................................1第1章绪论......................................................................................21.1开关闭电源简介....................................................................21.2开关电源的分类....................................................................31.2.1按驱动方式分类..........................................................31.2.2按能量转换过程的类型分类.......................................31.2.3按输入与输出是否隔离分类.......................................31.2.4按功率开关管关断和开通工作条件分类...................31.3开关电源的发展方向...........................................................4第2章开关器件...............................................................................52.1开关器件概述........................................................................52.1.1开关器件的特征..........................................................52.1.2开关器件的组成..........................................................62.1.3开关器件的分类..........................................................62.2不可控器件——电力二极管................................................72.2.1电力二极管的符号如图2.1所示................................72.2.2电力二极管的主要参数...............................................82.2.3电力二极管的选用......................................................82.2.4电力二极管的主要类型.............................................92.3半控型器件——晶闸管.......................................................92.3.1晶闸管的结构如图2.3所示......................................102.3.2晶闸管的基本特性....................................................102.3.3晶闸管的主要参数....................................................122.4典型全控型器件.................................................................132.4.1电力场效应管（MOSRFET）...................................142.4.2电力MOSFET驱动电路的选择...............................152.5绝缘栅双极晶体管IGBT...................................................152.5.1IGBT的结构和工作原理..........................................16洛阳理工学院毕业设计（论文）IV2.5.2IGBT的特性和参数特点..........................................162.5.3IGBT栅极驱动电路..................................................16第3章电力变换电路.....................................................................183.1整流电路..............................................................................183.1.1桥式不可控整流电路................................................183.1.2单相桥式全控整流电路.............................................193.2逆变电路.............................................................................213.2.1逆变电路的基本工作原理.........................................223.2.2电压型逆变电路........................................................22第4章UC3524和PWM控制技术................................................254.1UC3524简介.......................................................................254.2UC3524引脚介绍及组成的低压开关电源.........................264.3PWM控制技术...................................................................284.3.1PWM集成控制器的基本原理..................................28第5章ZVS—PWM全桥移相开关电源设计................................305.1电路图设计思路..................................................................305.2电路图原理..........................................................................30结论..............................................................................................33谢辞.......................