DC-link voltage boosting and switching control for switched reluctance motor drives

A DC-link voltage boosting circuit and its switching control to speed up th e current tracking response of a switched reluctance motor (SRM) drive are described. First, the governing equations of a typical SRM are formulated, and a computer simulation environment based on Simulink and Powersys is est ablished to facilitate the analysis and design of the SRM drive system. The n an active DC-link voltage boosting circuit and its switching control sche me are developed to reduce the effect of the back electromagnetic force (EM F) on the current tracking response, particularly at high speeds. In additi on, a robust current controller is designed to render current tracking resp onse less sensitive to inductance variation which is dependent on rotor pos ition. The performances of the proposed circuit and controller are demonstr ated by simulation and experimental results.