电力电子技术第1章 [兼容模式]

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1、PowerElectronicsChapter1PowerElectronicsDevices第一章电力电子器件Outline概览1.1Anintroductoryoverviewofpowerelectronicdevices电力电子器件间接1.2Powerdiode,GTR,powerMOSFET功率二极管，功率三极管，功率场效应管1.3Thyristor晶闸管1.4GTO,GCT门极可关断晶闸管，门极换流晶闸管1.5IGBT,IPM绝缘栅双极型晶体管，智能功率模块1.6Newdevices新型电力电子器件1.1Anintr

2、oductoryoverviewofpowerelectronicdevices电力电子器件总览•Theconceptandfeatures概念和特性•Configurationofsystemsusingpowerelectronicdevices由电力电子器件构成系统的结构•Classifications分类Theconceptofpowerelectronicdevices电力电子器件概念•Powerelectronicdevices:aretheelectronicdevicesthatcanbedirectlyused

3、inthepowerprocessingcircuitstoconvertorcontrolelectricpower.电力电子器件直接用于功率电路或控制电能。Powerelectronicdevices=Powersemiconductordevices电力电子器件=功率半导体器件•Majormaterialusedinpowersemiconductordevices——Silicon功率器件的主要材料是硅。Featuresofpowerelectronicdevices电力电子器件的特性•Theelectronicpowe

4、rthatpowerelectronicdevicedealswithisusuallymuchlargerthanthattheinformationelectronicdevicedoes.电力电子器件通常比信息电子器件大得多。•Usuallyworkinginswitchingstatestoreducepowerlosses.电力电子器件工作在开关状态以较少损耗。理想状况下：On-stateVoltageacrossthedeviceis0导通时器件电压为0Off-stateCurrentthroughthedevice

5、is0关断时器件电流为0Featuresofpowerelectronicdevices•Needtobecontrolledbyinformationelectroniccircuits.Veryoften,drivecircuitsarenecessarytointerfacebetweeninformationcircuitsandpowercircuits.电力电子器件由信息电子电路控制（用弱电控制强电）。驱动电路是强电和弱点之间的纽带。•Dissipatedpowerlossusuallylargerthaninfor

6、mationelectronicdevices—specialpackagingandheatsinkarenecessary.器件本身的功率损耗信息电子器件大得多，因此需要特殊封装并加装散热片。Powerlossesonpowersemiconductordevices功率损耗与电力半导体器件Totalpowerloss=conductionloss+turn-offloss+off-stateloss+turn-onlossonpowersemiconductor开通损耗和关断损电力电子器件总损耗=通态损耗+断态损耗+开通损

7、耗+关断损耗耗合称为开关损耗Configurationofsystemsusingpowerelectronicdevices电力电子系统结构•Powerelectronicsystem:Protectioncircuitisalsoveryoftenusedinpowerelectronicsystemespeciallyfortheexpensivepowersemiconductors.使用较昂贵的电力电子器件时，需要加装保护电路Terminalsofapowerelectronicdevice电力电子器件的端口Contr

8、olsignalfromdrivecircuitmustbeconnectedbetweenthecontrolterminalandafixedpowercircuitterminal.控制信号来自驱动电路。控制信号接在控制端和主电路的一端。Aclassifi