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-I-摘要电力电子技术已广泛的运用在各个领域，整流器是电力电子装置中常用的设备，它可以直接为电力电子装置提供直流电能。整流电路作为电网与电力电子装置的接口电路，与控制电路一起可为电力电子装置提供高稳定性和高精度的稳压电源。本论文主要研究了电力电子器件晶闸管的结构、原理和使用方法，并设计出了450kW整流系统。正确的触发电路的设计保证了可控整流装置的正常工作，设计中选择了常用的以同步信号为锯齿波的触发电路来对主电路进行控制。在整流主电路设计的同时对整流系统进行了保护，整流系统的保护一般应覆盖电力电子器件和主电路保护的模块。设计中整流系统采用了相控整流电路，主要由整流主电路，控制电路，保护电路和负载等组成。论文中对相关内容进行了详细、透彻的讲述，并插入了大量的图片来说明内容。在论文的最后，对整流器在电机励磁中的应用作了重点阐述，并叙述了它在其它方面的应用。关键词：电力电子装置；整流器；晶闸管-II-AbstractThepowerelectronictechnologyiswidelyappliedineachdomain.Rectifieriscommonlyusedinelectronicdevices,whichcanprovideDCpowertoelectronicdevicesdirectly.Rectifiercircuitsastheinterfacecircuitofpowernetworkandelectronicdevices,whichcanprovidehighstabilityandhighprecisionregulatedpowersupplyforpowerelectronicdeviceswithtogethercontrolcircuits.Thethesisdiscussesthepowerelectronicdevicesthyristor′sstructure,principleanduse,anddevisesthe450kWrectifiersystem.Therighttriggercircuitdesignensuresthenormaloperationofcontrolledrectifier,selectedcommonlyusedtosynchronizethesignalforthesawtoothtriggercircuitisselectedtocontrolthemaincircuitinthedesign.Whentherectifiercircuitisdesignedthemainsystemoftherectifierisprotected,accidentpreventionandprotectionofelectrolyticrectifiersystemshouldnormallycovertheprotectionofpowerelectronicdevicesandthemaincircuitprotectionmodule.Rectifiersystemwhichusesphase-controlledrectifyingcircuit,mainlyconsistsoftherectifiercircuit,controlcircuit,protectivecircuitandloadetc.Inthethesis,therelatedcontentsarerelatedindetailandextremely,andalargenumberofpicturesareinsertedtoillustratethecontent.Inthefinalofthepaper,therectifierofthemotorexcitationisillustratedeffectively,andotheraspectsaredescribedintheapplicationofelectronicdevices.Keywords：Powerelectronics，Rectifier，Thyristor-III-目录摘要.....................................................................................................................................IAbstract.....................................................................................................................................II1绪论........................................................................................................................................41.1课题背景与意义.........................................................................................................41.2课题研究现状.............................................................................................................21.3本课题的研究内容与目标.........................................................................................32整流器件晶闸管的概述........................................................................................................42.1晶闸管的结构和工作原理.........................................................................................42.2晶闸管的伏安特性.....................................................................................................52.3晶闸管的参数.............................................................................................................73450kW整流器主电路设计....................................................................................................93.1整流主电路的选择.....................................................................................................93.2整流器件的选用与计算...........................................................................................103.2.1整流变压器....................................................................................................103.2.2开关器件的选用与计算................................................................................113.3保护电路的设计.......................................................................................................123.3.1过电压的保护................................................................................................123.3.2过电流的保护................................................................................................203.3.3ddut与ddit的抑制....................................................................................223.4整流主电路...............................................................................................................243.4.1整流主电路原理图........................................................................................243.4.2主电路的工作原理........................................................................................253.5整流主电路仿真.......................................................................................................253.5.1仿真模型建立................................................................................................253.5.2参数设置........................................................................................................273.5.3仿真结果分析................................................................................................273.6谐波的危害及其治理...............................................................................................303.6.1谐波的危害及影响........................................................................................303.6.2谐波治理的方法......................................................................................