基于单片机控制的三相全控整流电源的设计（论文）111.doc

毕业设计（论文） 基于单片机控制的 三相全控整流电源的设计 学生姓名： 杨俊琦 学 号： 专 业：电气工程及其自动化 指导教师： 郭永吉 论文完成时间： 年 月 摘 要 随着电力电子技术的迅速发展，三相全控整流电源应用非常广泛，其好坏直接影响着电气设备或控制系统的工作性能。目前，市场上各种三相全控整流电源的基本环节大致相同，都包括交流电源、交流变压器、整流电路、滤波稳压电路等。文章介绍了单片机控制系统应用于直流稳压电源的方法和原理，实现了稳压电源的数控调节，在宽输出电压下实现了0.1V步进调节，并分析了稳压工作原理和电压调节方法。该电源具有电压调整简便、电压输出稳定、便于智能化管理等特点。将单片机数字控制技术，有机地融入直流稳压电源设计中，设计并制作出一款数字化直流稳压电源。该电源采用数字调节、输出精度高，且兼备短路和过流保护及报警功能，特别适用于各种有较高精度要求的场合。利用单片机对直流稳压电源进行控制，改善了电源的性能，使用方便灵活，并且成本较低，同时控制系统在软件上还可进一步改进，以扩展其功能，而且并不需要增加硬件开销，从而提高电源的性能价格比。 关键词：稳压电源；单片机；三相全控整流电源  Abstract With the rapid development of power electronics, DC power is widely used, its direct impact on the electrical device or control system performance. Currently, a variety of DC power supply on the market similar to the basic aspects are included AC power supply, AC transformer, rectifier, filter regulator circuit.This article introduces single chip control system for DC power supply of the methods and principles to achieve the power supply CNC adjustment to achieve a wide output voltage of the 0.1V step regulation, and analyzes the working principle and the voltage regulator adjustment method . The power supply has a simple voltage regulator, voltage output stability, ease of intelligent management features. The single chip digital control technology, organic integration into the DC power supply design, design and produce a digital DC power suppiy. Thedigital power supply regulation, the output of high precision, and both short circuit and over current protection and alarm functions, especially for higher accuracy requirements for various occasions. DC power supply using microcontroller to control and improve the power performance, convenience, flexibility and lower cost, while the control system software can be further improved to extend its functionality, but does not require additional hardware overhead, which improve the power performa