Abstract
This thesis presents the development and control of a battery powered switched reluctance motor (SRM) drive using two three-phase power modules having the voltage boosting and PFC charging capabilities. First, the SRM drive with its modified Miller converter being constructed using five legs in two three-phase intelligent power modules (IPM) are designed and implemented. The whole SRM drive power stage can be simplified and miniaturized, and it can be normally operated with satisfactory performance through the properly designed commutation and speed control schemes. Then the voltage boosting and PFC charging for the developed SRM drive are studied. The remaining one leg of the IPM is arranged to form a two-quadrant front DC-DC converter located between the battery and the SRM converter. In motor driving mode, the front-end converter is operated in DC-DC boost converter to establish well-regulated and boostable DC link voltage for the followed SRM drive. Significant performance enhancement in higher speed can be achieved. In idle charging mode, the SRM windings and the two IPMs are arranged to form a three-phase single-switch (3P1SW) switch-mode rectifier (SMR). And the front-end converter is operated as a buck type DC-DC converter. The boost-buck PFC charger is then constructed by the 3P1SW SMR and the buck converter. The battery charging control with rather good line drawn power quality can be achieved via proper switching and dynamic controls. The design and realization of the necessary control schemes in the established motor drive system are presented. And its normal operations and driving performances are verified by some simulated and experimental results.