晶闸管直流稳压电源毕业论文.

摘要

晶闸管直流稳压电源是通过整流桥把交流电转换为直流电的向负载直接供电的装置。其设计重点是保证有较高的转化效率和输出的直流电压保持稳定。

本文介绍了以晶闸管组成三相桥式整流电路，用KJ004和KJ041组成的触发电路的晶闸管直流稳压电源。该电源大大提高了电流的转换效率和电压的稳定性，在一定程度上解决了现有系统存在的问题，从而提高了系统的整体运行性能。本文研究电源从主电路入手，分析了三相桥整流器的输出特性和其所需要的触发脉冲的特性，确定了主电路和触发电路。从输出电压稳定性方面入手增加了电压调节器电流调解器和滤波电路等辅助电路。从保护晶闸管元件方面入手增加了电压电流保护电路等辅助电路。

本文涉及的电源能够从10V-——100V连续可调，有较大的调压范围，在扰动的情况下也能够输出较稳定的电压，能够满足生产和生活需要。

关键词：晶闸管可控硅整流电路；触发电路；稳压电源

Abstract

The thyristor current voltage-stabilized source is an AC-DC converter. Which changes AC to DC by Full Bridge converter .Its designed key point is the higher transformed effciency and the output DC voltage maintentance is stable .

This article introduces a voltage-stabilized source .Which trigger converters is composes with KJ004 and KC41C and its three phase Full bridge controlled rectifier is discomposed with thyristor .This power source greatly enhances the current transformed efficiency and the output Voltage-stabily,has solved the existing system existence problem in the certain degree, and thus enhances the whole system’s performance characteristic. This article studies the power to obtain from the main circuit ,analyzes the trigger pulse characteristic which the three phase bridge rectifier input level and its needed to determine the main circuit and the triggert circuit .Obtained from the output voltage stable aspect increased auxiliary circuit ,voltage regulator ,current regulator and flitter circuit and so on .Obtained from the protection crystal thyratron part aspect,increated the voltage electric protection circuit and so on .

This power’s output voltage can move from 10V to 100V ,has a wider accent to press the scope, its output voltage is stabilized when the perturbation in the situation .This power can satisfy the production and the life need.

Keywords: Thyristor Full-bridge controlled rectifier ;Trigger Converter ;Voltage-stabilized source .

目录

摘要 (1)

第一章绪论 (4)

1.1 可控整流 (4)

1.2逆变与变频 (4)

1.3交流调压 (5)

1.4直流斩波调压 (5)

1.5无触点功率静态开关 (5)

第二章主电路的设计 (7)

2.1整流晶闸管和三相桥 (7)

2.1.1晶闸管特性 (7)

2.1.2定量计算 (10)

2．2 整流变压器的设计 (11)

2.2.1整流变压器参数计算 (11)

2.2.2 整流变压器的结构计算 (13)

2.3 晶闸管的选用 (14)

2.4滤波电路 (15)

第三章保护电路 (17)

3．1过电压保护 (17)

3．1．1 过电压产生原因及分类 (17)

3．1．2 过电压保护措施 (18)

3．2 过电流保护 (20)

3．2．1 快速熔断器保护 (20)

3.3 保护电路的计算 (21)

3.3.1交流侧浪涌过电压抑制用RC电路计算 (21)

3.3.2晶闸管保护计算 (22)

第四章控制电路 (23)

4．1 控制电路的分析 (23)

4.1.1电流互感器及整流部分 (23)

4.1.2 电压调节器与电流调节器 (24)

4.2控制电路的设计计算 (26)

4.2.1电流调节器的设计 (26)

4.2.2电压调节器的设计计算 (27)

4.2.3电压反馈计算 (28)

4.2.4电流反馈计算 (28)

第五章晶闸管的触发电路的设计 (29)

5．1触发电路的要求 (29)

5．2 集成触发电路及数字触发电路 (30)

5．2．1 KC04、KC41C织成的三相集成触发电路 (30)

5．2．2 KC41C六路双脉冲形成器 (30)

谢语 (34)

参考资料 (35)