毕业论文--基于单片控制的三相全控桥触发电路设计

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1、设计 说明书（毕业 论文 ） 摘 要 电子技术的应用已深入到工农业经济建设，交通运输，空间技术，国防现代化，医疗，环保，和人们日常生活的各个领域，进入新世纪后电力电子技术的应用更加广泛，因此对电力电子技术的研究更为重要。近几年越来越多电力电子应用在国民 工业中，一些技术先进的国家，经过电力电子技术处理的电能己达 到总电能的一半以上。 本文主要介绍基于单片机 8098 芯片 控制 的三相桥式全控整流电路的主电路和触发电路的原理及控制电路，软件部分由 8098 高级语言编程。具体运行由工频三相电压经 变压器后 在芯片控制下在不同的时刻发出不同的脉冲信号去 控制相应的 SCR 可控硅整流为直流电给负

2、载供电。此种控制方式其 主要优点是输出波形稳定和可靠性高 抗干扰强的特点。 触发电路结构简单，控制灵活， 温度 影响小，控制精度可通过软件补偿，移相范围可任意调节等特点，目前已获得业界的广泛认可。 并将在很多的工业控制中得到很好的运用。 关键词： 晶闸管 单片机 触发角 同步信号 设计 说明书（毕业 论文 ） ABSTRACT The application of electronic technology has deep into the industrial and agricultural economic development, transportation, space tech

3、nology, the modernization of national defense, medical, environmental protection, and all fields of Peoples Daily life, after entering the new century the power electronic technology application more widely, so the study of power electronic technology is more important. In recent years, more and mor

4、e power electronic application in the national industry, some technology of advanced countries, through power electronic technology processing power has reached more than half of total power. Mainly introduced in this paper based on single chip microcomputer 8098 control chip three-phase bridge type

5、 all control the rectifier circuit of main circuit and the principle of trigger circuit and control circuit, the software part consists of 8098 high-level language programming. Specific operation by three-phase power frequency voltage through a transformer in under control chip at different times af

6、ter different pulse signal to control the corresponding SCR silicon controlled rectifier direct current to power a load. This kind of control method, its main advantages are the output waveform is stable and high reliability and strong anti-interference characteristics. Trigger circuit has simple st

7、ructure, flexible control, the temperature effect is small, can through the software compensation control precision, the phase shifting range can be arbitrary adjustment etc, has won wide recognition in the industry. And will be well used in many industrial control. Keywords: MCU trigger Angle of thyristor and the synchronization signal