晶闸管直流调速系统变流器课程设计

晶闸管直流调速系统变流器课程设计

电力电子技术课程设计说明书

晶闸管直流调速系统变流器

系 、 部： 电气与信息工程系 学生姓名： 李 春 指导教师： 桂友超 职称 副教授 专 业： 自动化 班 级： 自动化0703 完成时间： 2010/6/16

晶闸管直流调速系统变流器课程设计

摘要

由于直流电动机具有宽广的调速范围，平滑的调速特性，较高的过载能力和较大的起动、制动转矩，因此被广泛的应用于调速性能要求较高的场合中。在工业生产中，需要高性能速度控制的电力拖动场合中，直流调速系统发挥的重要的作用。本次课程设计是利用两组三相桥式全控整流系统的正反并联来实现晶闸管直流调速系统变流器的连续调速和可逆运行。当使正组变流器处于整流状态时，直流电动机正向运行；当使反组变流器处于整流状态时，直流电动机就能反向运行。

关键词：直流电动机； 晶闸管； 变流器； 直流调速

ABSTRACT

As the DC motor with wide speed range, smooth speed control characteristics, high overload capacity and larger starting, braking torque, it is widely used in high speed performance requirements of the occasion. In industrial production, need high-performance speed control of electric power drag occasions, DC drive system played an important role.The curriculum design is the use of two three-phase bridge controlled rectifier system to achieve positive and negative parallel thyristor converter DC drive system of continuous speed control and reversible operation. When making positive group converter in rectifier state, the DC motor being run; when making anti-group converter in rectifier state, Keywords: DC motor; thyristor; converter; DC Speed

目 录

晶闸管直流调速系统变流器课程设计

1 晶闸管直流调速系统变流器设计方案介绍························································ 3 1.1 设计目的······································································································ 3 1.2 设计方案介绍······························································································ 3

1.2.1 设计任务及指标要求···································································· 3

2 主电路的设计········································································································ 4 2.1 主电路的工作原理及原理图······································································ 4 2.2 参数计算······································································································ 9 2.2.1 整流变压器的计算········································································ 9

2.2.2 晶闸管的元件选择··