三相半波整流电路设计正文.docVIP

目录 第一章 技术论证···························································1 第二章 电力电子器件·······················································2 1电力电子器件简介····················································2 2电力电子器件分类····················································2 2.1 按照电力电子器件能够被控制电路信号所控制的程度分类·················2 2.2按照驱动电路加在电力电子器件控制端和公共端之间信号的性质分类···3 2.3按照驱动电路加在电力电子器件控制端和公共端之间有效信号波形分类·3 2.4按照电力电子器件内部电子和空穴两种载流子参与导电的情况分类·····3 3电力电子器件优点····················································3 4晶闸管·······························································4 4.1普通晶闸管的基本工作原·············································4 4.2普通晶闸管的工作条件···············································4 4.3普通晶闸管的保护措施···············································4 5电力晶体管···························································4 5.1电力晶体管工作原理················································5 5.2电力晶体管的主要参数·············································6 6电力晶体管的驱动与保护·············································7 6.1 GTR基极驱动电路··················································7 6.2集成化驱动························································7 6.3 GTR的保护电路····················································7 第三章 三相半波相控整流电路··············································9 1 电阻性负载··························································9 2 三相半控桥触发电路··················································12 2.1模拟与数字触发电路················································12 第四章 整流器件的选择及型号的确定········································13 总结·····································································14 致谢·····································································15 参考文献·································································16 第一章 技术论证 三相可控整流电路的控制量可以很大，输出电压脉动较小，易滤波，控制滞后时间短，因此在工业中几乎都是采用三相可控整流电路。在电子设备中有时也会遇到功率较大的电源，例如几百瓦甚至超过1—2kw的电源，这时为了提高变压器的利用率，减小波纹系数，也常采用三相整流电路。另外由于三相半波可控整流电路的主要缺点在于其变压器二次侧电流中含有直流分量，为此在应用中较少。而采用三相桥式全控整流电路，可以有效的避免直流磁化作用。实际中，由于三相相控桥式整流电路输出电压脉动小、脉动频率高、网侧功率因数高以及动态响应快，在中、大功率领域中