低压断路器半导体式脱扣器设计

电气自动化论文编号:ZD786    论文字数:27346,页数:52

目   录

摘  要 ………………………………………………………………………………5
Abstract……………………………………………………………………………6
第1章 绪论 ……………………………………………………………………7
 1.1 半导体脱扣器的发展与意义………………………………………………………7
 1.1.1 半导体脱扣器的发展 ………………………………………………………7
 1.1.2 半导体脱扣器的研究意义 …………………………………………………7
 1.2半导体脱扣器综述……………………………………………………………8
 1.2.1 脱扣器分类 …………………………………………………………………8
 1.2.2 半导体脱扣器的主要优缺点………………………………………………11
第2章 半导体脱扣器电路总体设计…………………………………………13
 2.1 半导体脱扣器设计技术条件  ……………………………………………………13
 2.2半导体脱扣器的保护特性……………………………………………………14
 2.3半导体脱扣器方框图……………………………………………………………15
 2.4 具体电路图的设计和说明…………………………………………………………16
 2.4.1 电源部分……………………………………………………………………17
 2.4.2 过电流保护…………………………………………………………………18
 2.4.3欠压保护 ……………………………………………………………………18
第3章 半导体脱扣器基本单元设计……………………………………………………19
 3.1信号检测环节………………………………………………………19
 3.2 信号比较电路 ……………………………………………………………………22
3.3延时电路…………………………………………………………………23
3.4触发电路…………………………………………………………………24
3.5稳压电源设计………………………………………………………………26
3.6小功率电源变压器设计……………………………………………………27
3.7执行元件设计………………………………………………………………31
 3.7.1脱扣器选用  ……………………………………………………………… 31
 3.7.2直流电磁系统基本原理 ……………………………………………………32
 3.7.3直流电磁系统气隙磁导 …………………………………………………35
 3.7.4直流电磁系统吸力特性 ……………………………………………………36
 3.7.5直流电磁系统动态特性 ……………………………………………………38
 3.7.6 螺管式电磁系统设计  ……………………………………………………41
 3.8 印制电路设计要点 ………………………………………………………………43
第4章 抗干扰措施及试验 ……………………………………………………45
 4.1电磁干扰及抗干扰措施 …………………………………………………………45
4.2电子元件可靠性筛选和老化试验………………………………………47
4.3使用及注意事项………………………………………………………48
4.4  DW15万能式断路器功能说明 …………………………………………………50
4.5  半导体脱扣器外壳图…………………………………………………………… 51
参考文献 ……………………………………………………………………………52
结 束 语 ……………………………………………………………………………53
致 谢 ……………………………………………………………………………54

摘  要：DW15万能式低压断路器是供配电系统中的重要设备之一，此断路器器已在低压供配电领域得到了广泛的应用。断路器是用于接通、分断电力系统及对各种故障进行保护控制的一种开关电器，而半导体脱扣器则是低压断路器的重要组成部分之一，原因在于半导体脱扣器的功能就是使其断路器的功能得以实现，且半导体电子脱扣器是断路器产品中起到过电流保护功能的主要部分。
 本次设计是以DW15系列为参考，结合实际情况进行设计。文中介绍了该产品的结构原理与特点、基本参数与技术性能, 同时并介绍了脱扣器的主要功能、工作原理.

   关键词：半导体；脱扣器；断路器；万能式
 
 

 Design of the Low-voltage Circuit Breaker’s Semiconductor Release
ABSTRACT: The DW15 conventional low-voltage circuit breaker is one of the important equipments to provide to go together with to give or get an electric shock the system inside. The type of breaker to have provided to go together with to give or get an electric shock in the low pressure the realm gets the extensive application. Circuit breaker is a kind of switch used in power system for connecting and disconnecting the circuit as well as providing protection and controlling on all types of breakdown .And semiconductor release is one of the important part of the conventional low-voltage circuit breakers. The reason is that the function of semiconductor release is to make circuit breaker’s function realizes. Semiconductor release is the main part of have the over-current protective function in the product of circuit breaker.
 This design regards the series of DW15 as to consult, joining together the actual circumstance proceed the design. It is convenient to use and features of the product and its basic parameters and specifications are presented. And then the design of semiconductor release, the main functions,principle of working and construalized were mainly introduced.

 Keywords: semiconductor； release；circuit breaker；conventional