开关磁阻电机具有结构简单、启动电流小、启动转矩大以及可控参数多等诸多优点，但在其问世之初由于各种技术的限制并未能得到广泛的应用。直到上世纪八十年代，随着微机控制技术与电力电子技术的不断发展，才让该调速系统逐渐受到了传动界的重视，并且成为了电气传动领域的热门课程之一。现如今，开关磁阻电机已经在煤炭行业、牵引运输行业、家用电器等行业中得到了广泛的应用，并且取得了良好的经济与社会效益。 开关磁阻电机的可控参数有导通角、关断角、定子电压及定子电流，基于这些参数，电机有三种基本的调速方式，分别为角度位置控制、电压斩波控制以及电流斩波控制。开关磁阻电机调速系统设计中转子位置的检测至关重要，电机的启动及换相都是建立在准确掌握转子位置信息之上的。本论文设计了一种转子位置检测的方法，采用光敏式位置传感器，将位置检测电路绘制成180°的半圆弧状PCB固定在电机底座的后端盖内，以一台三相12/8极电机为调速对象，以DSP TMS320F28335为控制器，设计了对应的开关磁阻电机调速系统。 论文中首先介绍了开关磁阻电机的发展历程，指出了设计开关磁阻电机调速系统的重要意义；其次，介绍了电机的基本结构、工作原理、磁链方程、电压方程以及机械方程，基于这些数学方程，引出了电机的线性模型及准线性模型；然后，基于准线性模型，在 中建立了调速系统的仿真模型，并进行了相关的仿真研究。继而，设计了调速系统的硬件及软件，硬件电路分为主电路及控制电路，主电路中引入三相交流电经整流电路整流、滤波电路滤波后得到的直流电加到三相不对称半桥功率变换电路两端，通过控制电路中的位置检测电路检测回来的转子位置及经霍尔传感器检测到的定子电流等信息，控制功率变换器件的导通与关断；最后，经过调试，电机在角度位置控制及电流斩波控制方式下可正常运转，最终实现了开关磁阻电机的调速控制。

Switched reluctance motor has so many adwantages,such as simple structure, small starting current, big starting torque and many controlable parameters and so on,however it wasn’t widely used since its appearance,because the control technology was restricted.With the continuous development of microcomputer control technology and power electronic technology, it not only gradually appealed to the attention of transmission, but also became one of the most popular courses in the field of electric drive area.Switch reluctance motor speed regulation system has been deeply applied in the coal industry, transportation industry, household electrical appliances and other fields, and it also achieves good economic and social benefits. SRM has the following controlable parameters,turn on angle, turn off angle, the stator voltage and stator current.Based on these parameters,we can control SRM through the following methods:angle position control,current chop control and voltage chop control.All in all,we must acquire the position of stator before we control SRM,Motor start and commutation are based on the accurate rotor position information. This paper proposed a method to check the position of stator,by using a photosensitive type position sensor, the position detection circuit was fixed in the base of the electric motor,which was designed into 180° arc shape. A three phase and 12/8 pole motor was the control object, DSP TMS320F28335 was the processor,the relevant switch reluctance motor speed control system was successfully designed. First of all, this paper introduces the developing course of SRM, it points out the research significance on this motor speed control system. Secondly, Secondly, the basic structure, working principle , flux linkage equations, the voltage equation and mechanical equation of SRM is proposed, based on the mathematical equations, it introduces the linear model and nonlinear model of the motor. Thirdly, the simulation model of SRD is established based on nonlinear model in Matlab/Simulink. Then, hardware curcuit and software program were designed, main circuit and control circuit were separated, in the main circuit, three-phase alternating power was processed by rectifier rectifier circuit and filter circuit,then it was directly switched in three phase asymmetry half bridge power conversion circuit. Position detection circuit in the control circuit checked the position of rotor, hall sensor checked stator current, then we control the power transformation device conduction and shut off. Finally, the SRD system can properly work under the APC, CCC and CVC control mode debugging, this switched reluctance motor drive system can preliminarily work.