On the PFC AC-DC converter fed SRM drives with reversible and regenerative braking capabilities

This paper presents the development of two types of power factor corrected (PFC) AC-DC converter fed switched-reluctance motor (SRM) drives, both possess reversible and regenerative braking capabilities. First, a three-phase six-switch four-quadrant boost switch-mode rectifier (SMR) fed SRM drive is established. The DC-link voltage of the SRM drive is adjustable and well regulated for effectively enhancing the SRM driving performance under higher speeds. Moreover, the recovery of regenerative braking energy back to the mains is achievable. Next, a new PFC front-end consisting of a diode rectifier and an anti-paralleled active power filter (APF) is proposed. It allows the use of IGBT module with lower rating to achieve the regenerative braking and PFC functions. However, the DC-link voltage boosting and regulating abilities are sacrificed. Some measured results are provided to comparatively evaluate the performances of the SRM drives powered by the two AC-DC front-end converters.