文档介绍：课程设计说明书
直流电机调速电路的设计
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摘要
将电子技术和控制技术引入传统的电力技术领域,利用半导体开关器件组成各种电力变换电路实现电能的变换和控制,构成了一门完整的学科,被国际电工委员会命名为电力电子学或称为电力电子技术,他是一门综合了电子技术,控制技术和电力技术的新兴交叉学科。直流电机是电机的主要类型之一。一台直流电机即可作为发电机使用,也可作为电动机使用,用作直流发电机可以得到直流电源,而作为直流电动机,由于其具有良好的调速性能,在许多调速性能要求较高的场合,仍得到广泛使用。直流电动机是人类最早发明和应用的有一种电机。直流电动机是将直流电转换为的旋转机械。他与交流电动机相比,虽然直流电动机因为结构复杂,维护困难,价格比较贵等缺点制约了它的发展,应用不如交流电动机广泛。但由于直流电动机有优良的启动,调速和制动性能,因此在工业领域中仍占有一席之地。
关键词电力电子技术;直流电动机;机械能
ABSTRACT
Will the electronic technology and control technology into the traditional power technology, using semiconductor switching parts of all kinds of power transformation of electric power circuit implementation transformation and control, constitute plete discipline, be door to the international mission named power electronics or called power electronic technology, he is prehensive electronic technology, control technology and the emerging interdisciplinary power technology. Dc motor is one of the main types of the motor. A dc motor as a generator can use, also can use as a motor, used as dc generators can get dc power, and as a dc motor, since it has good performance of speed adjustment, in many speed performa, is still widely used. Dc motor is the earliest human invention and application of a kind of motor. Current motor is converted to dc of rotating machine. pared with ac motor, although dc motor for plex structure, maintenance difficulties, price is more expensive ings constrains its development, the application as ac motor widely. But because of dc motor with fine start, speed and braking performance, so in industry still has a place.
Key words power electronic technology; dc motor; mechanical energy
目录
1 绪论 5
5
5
直流电动机的工作原理 5
直流电动机的调速 6
8
概述 8
直流脉宽调速系统的工作原理 8
2 系统设计方案 10
10
10
布线图 10
注意事项 11
3 元器件介绍 12
SG2731 12
SG2731结构及原理 12
SG2731引脚及功能 14
SG2731典型应用(电路参数见表3) 14
三极