Dsp-based Switched Reluctance Motor Speed Control System

Switched Reluctance Drive system is a new motor drive system. It has many good features for example simple structure, low cost and excellent driving performance. It's the strongest competitor to traditional AC and DC drive system, so it has powerful future.This dissertation primarily presents the development of Switched Reluctance Motor at home and abroad, recommends the basic structure of SRD system and its features, and then describes the characteristics and working principle of SRM in details. The object of this dissertation is 8/6 pole, 5.5Kw SRM. By comparing several control methods, a simple and practicable design is put forward. The controller uses the TMS320F240 of Ti Company as the main control unit, adopts PI digital adjusting and PWM controlling, produces Turn-on and Turn-off signal of the IGBT, combining with the protection current and voltage. The designing of Power Converter bases on the principle of matching structure, high efficiency and convenient controlling. Compared with several power converters, a kind of least main switch-components structure is put forward. This structure has several advantages such as low cost, simple control strategy and more safety. The software of system is programmed. The modular program can make the program readable and modifiable.After the running test, the scope of speed is from 50 to 2500 r/m. The system has a good performance and high efficiency, achieves the anticipative result.