感应加热电源IGBT驱动及保护电路设计

洛阳理工学院毕业设计（论文）I感应加热电源IGBT驱动及保护电路设计摘要本文以感应加热电源IGBT驱动及保护电路为研究对象，阐述感应加热电源的现状与发展趋势、感应加热电源的优点、应用和基本原理。其中，IGBT（绝缘栅双极晶体管）是一种复合了功率场效应管和电力晶体管的优点而产生的一种新型复合器件,它同时具有MOSFET的高速开关及电压驱动特性和双极晶体管的低饱和电压特性，易实现较大电流的能力，既具有输入阻抗高、工作速度快、热稳定性好和驱动电路简单的优点，又具有通态电压低、耐压高和承受电流大的优点。近年来IGBT成为电力电子领域中尤为瞩目的电力电子器件，并得到越来越广泛的应用。本文分析了感应加热电源的总体结构和介绍了IGBT的基本结构、工作原理、驱动电路，同时简要概括了IGBT模块的选择方法和保护措施等，通过对IGBT的学习，来探讨IGBT在当代感应加热领域的广泛应用和发展前景。关键词：感应加热电源，绝缘栅双极晶体管，IGBT驱动电路，IGBT保护电路。洛阳理工学院毕业设计（论文）IIInductionheatingpowerIGBTdriveandprotectivecircuitdesignABSTRACTBasedontheinductionheatingpowerIGBTdriveandprotectioncircuitastheresearchobject,thispaperpresentsituationandthedevelopmenttrendofinductionheatingpowersupply,theadvantagesofinductionheatingpowersupply,theapplicationandthebasicprinciple.Amongthem,theIGBT(insulatedgatebipolartransistor)isakindofcompositepowerfieldeffecttubeandtheadvantageofthepowertransistorandproduceanewtypeofcompositedevice,italsohasahigh-speedswitchingandvoltageoftheMOSFETdrivecharacteristicandlowofthebipolartransistorsaturationvoltagecharacteristic,easytorealizelargecurrentcapacity,notonlyhashighinputimpedance,workingspeed,goodthermalstabilityanddrivecircuit,theadvantagesofsimpleandhasalowvoltagestate,theadvantagesofhighvoltageandcurrentunderthebig.InrecentyearstheIGBTaspowerelectronicsisparticularlyoutstandinginthefieldofpowerelectronics,andgetmoreandmorewidelyused.Thispaperanalyzestheoverallstructureofinductionheatingpowersupply,andintroducesthebasicstructure,workingprincipleofIGBT,drivecircuit,andbrieflysummarizestheIGBTmoduleselectionmethodandprotectionmeasures,etc.,throughthestudyofIGBT,toexploretheIGBTarewidelyusedinthefieldofcontemporaryinductionheatinganddevelopmentprospects.KEYWORDS:Inductionheatingpowersupply,insulatedgatebipolartransistor,IGBTdrivecircuit,protectioncircuitforIGB洛阳理工学院毕业设计（论文）III目录前言................................................................................................1第1章感应加热电源的原理...........................................................21.1感应加热电源的基本知识.................................................21.1.1感应加热电源的优点及应用.......................................21.1.2感应加热电源的基本原理..........................................21.1.3感应加热中的三种效应和穿透深度...........................21.2感应加热电源发展现状及趋势..........................................31.2.1感应加热电源频率划分...............................................31.2.2国外高频感应加热电源发展现状...............................31.2.3国内高频感应加热电源发展现状...............................41.2.4感应加热电源的IGBT................................................41.3本文研究的内容及任务........................................................41.3.1课题主要研究内容......................................................41.3.2课题目的和要求..........................................................5第2章IGBT的基本结构和工作原理.............................................62.1IGBT的工作特性..................................................................62.1.1IGBT的基本结构........................................................62.1.2IGBT的工作原理........................................................82.1.3IGBT的工作特性........................................................82.2IGBT工作原理....................................................................102.2.1IGBT工作方法..........................................................102.2.2导通.........................................................................112.2.3关断.........................................................................112.2.4阻断与闩锁...............................................................122.3英飞凌FZ400R12KS4.................................................122.4IGBT驱动电路....................................................................122.4.1分立元件驱动电路....................................................132.4.2光电耦合器驱动电路................................................13洛阳理工学院毕业设计（论文）IV2.4.3脉冲变压器直接驱动IGBT的电路..........................142.4.4专用集成驱动电路....................................................14第3章IGBT的保护电路设计...................................................163.1IGBT过压保护电路...........................................................163.1.1IGBT栅极过压保护电路..........................................163.1.2集电极与发射极间的过压保护电路........................173.1.3直流过电压...............................................................183.1.4浪涌过电压...............................................................183.1.5IGBT开关过程中的过电压......................................183.2IGBT过流短路保护电路....................................................193.2.1IGBT过流保护的分类..............................................193.2.2过流保护检测电路...................................................203.2.3过流和短路保护措施...............................................203.3IGBT过热保护电路............................................................213.4IGBT欠压保护电路............................................................22第4章IGBT的驱动电路...........................................................234.1IGBT的驱动要求................................................................234.2驱动电路的隔离方式.........................................................234.2.1隔离的重要性：..................................