A novel boost converter for segmented-stator hybrid-excitation switched reluctance motor drive with high performance

A novel boost converter with high performance is proposed to improve the dynamic characteristic of a 12/8-pole segmented-stator hybrid-excitation switched reluctance motor (SSHE-SRM) drive. The machine topology and static magnetic characteristics of the 12/8 SSHE-SRM are presented and compared with a conventional SRM (CSRM). The SSHE-SRM produces higher torque than CSRM, especially in the large current range. Thus, in order to increase the phase current of the SSHE-SRM under dynamic operation, the boost converter is employed. The operation states of the SSHE-SRM drive with the novel boost converter are analyzed in detail. During the fast-excitation and fast-demagnetization modes, phase voltage is boosted due to the addition of capacitor and hence faster-excitation and fast-demagnetization currents are obtained. Detailed simulations and experiments of the SSHE-SRM drive with this novel boost converter are carried out as well as compared with asymmetric half-bridge converter.