The Computer-control Speed System Of Switched Reluctance Motor

Switched Reluctance Motor(SR) is a new-type drived-electromotor system which develops rapidly since 1980. The structure of the SRD is simple. It has a wide range and excellent performance in speed. It also has a high efficiency and high reliability. So the SRD is one of the hot spots which is studied and designed all over the world.This article primarily introduces the structure of Switched Reluctance Drive (SRD) system and its development at home and abroad. The characteristic of Switched Reluctance Motor (SRM) and its electro-magnetics principle were described in details. The variation of SRM winding current in different stage and the formula of toque and power were also analyzed in it.The structure of power circuit was designed and correlative parameter was calculated. The control method was introduced and the hardware of the controller was designed. The controller uses the 89C52 and 89C2051 as the main control unit and produces the on and off and angle signal of each phase. Combined with protecting signal and current chopping signal, it can control the IGBT on and off. The control software was programmed. The modular program can make the program universal and readable. The experiment waves of current and voltage of each phase in different speed and curve of toque and speed are given and analyzed at the end of the article.