Integrated design and experiment study of switched reluctance starter/alternator system

The integrated starter/alternator technology is an important developing direction of energy technology in aviation, automobile, etc. Switched reluctance starter/alternator system has good application prospect for the advantages of its structure and control. In this paper, the principle of switched reluctance starter/alternator system has been analyzed firstly. For decreasing bulk, weight and cost, the power converter, drive amplifier circuit and the controller hard system have been integrated designed. The constant acceleration control strategy in starting and internal model-fuzzy control strategy in generating are put forward to improve the starting and the generating performance. This article established a switched reluctance starter/alternator system integrated simulation model using MATLAB. The control strategies have been designed and the parameters have been estimated base on the simulation model. And the switched reluctance starter/alternator system experiment platform has been built finally to validate the design finally to validate the integrated design. The starting and the generation experiments based on the proposed control strategies have been finished at different condition. From the experiment results it is clear that the switched reluctance starter/alternator system integration design scheme is feasible. From the prototype system, the fast starting, no overshoot, quickly voltage establishing, small voltage fluctuation and good robustness have been obtained. The design of the paper meets the starting and generating requirements of nowadays vehicles.