毕业设计（文）-湖北工业大学中心配电室直流操作电源设计.doc

毕业设计（论文）专用纸 毕 业 设 计（论 文）题 目 湖北工业大学中心配电室 直流操作电源设计 姓 名 学 号 所在学院 湖北工业大学 专业班级 12电气1班 指导教师 日 期 2016 年 6 月 1 日 PAGE \* MERGEFORMAT I PAGE \* MERGEFORMAT I摘 要直流操作电源是变电站和发电厂是必不可少的二次设备，它自身的可靠性直接关系这发电厂以及变电站可靠运行。随着当今电气设备的不断更新，对电力供电系统提出了越来越高的要求，不间断电源通过交流输入一方面给直流负载供电，另一方面给蓄电池供电，在交流失电的情况下启动蓄电池供电，保证重要设备的安全运行。电力直流操作电源就是其组成的一部分，配电室电气设备的操作、保护、控制、信号、自动装置及事故照明，都需要有可靠的供电电源，因为这类电源尤为重要，所以一般我们都需要专门设置，又把它称为操作电源。本文首先介绍了直流操作电源的研究现状、目的及意义，然后从整体出发给出直流操作电源系统的设计规则，接着介绍了高频开关电源电路原理，设计主电路和控制电路、计算高频整流模块的电路参数、选择合适蓄电池，最后进行主电路和控制电路仿真。主回路高频开关电源模块采用AC-DC-AC-DC模块，控制回路采用电压电流双闭环控制, 电流内环采用峰值电流控制模式，电压外环控制，基于UC3875芯片设计控制系统。关键词：蓄电池，高频开关电源，UC3875ABSTRACT DC operation power supply is the two equipment of substation and power plant, its own reliability is directly related to the power plant and the reliable operation of the substation. Constantly updated with the current of electrical equipment, in power supply system proposed requirements more and more high, uninterruptible power supply through the exchange of input to the DC load power supply, on the other hand to the battery powered, in the case of AC loss of power in the start battery power supply, guarantee to the safe operation of the equipment. Electric power DC operating power supply is a part of the composition of, power distribution room electrical equipment operation, protection, control, signal, automatic devices and emergency lighting, need reliable power supply, because this kind of power source is particularly important, therefore, we need to set up a special, and refer to it as the operating power supply.In this paper, we first introduce the DC operation power supply research status, purpose and significance, and from the whole of design rules for a given DC operation power supply system, then introduced the high-frequency switching power supply circuit, the design of main circuit and control circuit, high frequency rectifier module of circuit