Unity power factor drive of SRM with single-stack

A novel single-stage power factor corrected drive for switched reluctance motor (SRM) is presented to achieve sinusoidal, near unity power factor input currents. The proposed PFC SRM drive has no additional active switch and a single-stage approach, which combines a DC link capacitor used as DC source and a drive used for driving the motor into one power stage, has a simple structure and low cost. A prototype to drive an 8/6 pole SRM equipping a suitable encoder is designed to evaluate the proposed topology. Also, a subscription control algorithm is presented. The characteristics and validity of the proposed circuit are discussed in depth through the experimental results