Modified Sepic Converter and Three-Level NPC Inverter for Reducing Commutation Torque Ripple in BLDC Motor

Abstract

This paper shows another power converter topology to smother the torque ripple because of the phase current commutation of a brushless dc motor (BLDCM) drive framework. A blend of a three-level diode clasped staggered inverter (3-level DCMLI), an adjusted  single-ended primary-inductor converter  (SEPIC), and a dc-transport voltage selector circuit is utilized in the proposed torque ripple concealment circuit.