1三相全控晶闸管整流器数字触发系统设计摘要三相全控桥式整流电路在生产生活中应用十分广泛，在本文中重点介绍了该电路的相关理论，同时采用单片机实现对电路触发器的控制。首先，先用检测电路找到自然换向点。其次，通过检测电路找到自然换向点后，发出的信号通知单片机开始运行既定的程序，按照一定的触发规律触发整流电路的晶闸管以控制触发电路运行。最后，通过 STC12C5A60S2 单片机内置的 A/D 转换器及其程序对触发角进行调控。最终结果表明通过单片机进行控制的触发方式具有高效、快捷、灵活等诸多特性，为三相全控桥式整流电路的应用提供了一种合适的方法。 关键词：晶闸管，三相全控桥式整流，自然换向点2Design of Digital trigger system for three-phase fully controlled Thyristor RectifierAbstractThree-phase fully controlled bridge rectifier circuit is widely used in industrial field. [1] on the basis of studying the theory of fully controlled rectifier circuit, 51 single chip microcomputer is used to control the rectifier circuit. First of all, the detection circuit is used to find the natural directional point. Secondly, after the natural reversal point is found by the detection circuit, the signal notifies the single chip microcomputer to start running the established program, and triggers the thyristor of the rectifier circuit according to a certain trigger law to control the operation of the trigger circuit. Finally, the trigger angle is controlled by the A / D converter and its program built in STC12C5A60S2 single chip microcomputer. The final results show that the trigger method has a series of characteristics, such as fast, convenient, intuitive, flexible and so on, which provides another simple choice and method for power electronics teaching and experiment.Key Words: thyristor , Three-phase fully controlled bridge rectifier, Natural commutation point3第一章 绪论1.1 研究背景及其意义在过去几十年里，电子设备的演化快速发展...
