The Study Of The Switched Reluctance Motor Drive

Due to its simple construction, low cost and high efficiency in the broad range of speed, switched reluctance motor drive (SRD) has become the powerful competitor against the traditional AC and DC drive systems. But in performance analysis, design and control, there are still some problems to be resolved, such as the dependence on the position sensors, comparatively serious torque ripple, vibration and noise, which limit its further application. This paper developed a control system based on PI control for a 4-phase 8/6-pole SRM based on LPC2292, which can be used for the technical research on SRM control.The thesis contains five chapters. The first chapter summarizes the development and research of switched reluctance drive (SRD), discusses the main research direction, and explains the main work in this paper. The second chapter introduces the structure and theory of SRM, and discusses the control modes of SRM and the features of them. In the third chapter, it mainly introduces structure of the SRD, and discusses the structure and characteristic of the power converter circuit, controller and position sensor. In the last chapter, a controller of a 4-phase SRM was developed based on LPC2292, adopts IPM as the power switches and designs a new power converter circuit for 4-phase SRM. The current feedback circuit, position sensor and fault protection etc. were provided. At last the soft of SRD adopts the modularized programming method and was carried out. All of these established a good foundation for the study of SRD.