Commutation Torque Ripple Reduction in the BLDC Motor Using Modified SEPIC and Three-Level NPC Inverter


This project introduces another power converter topology to smother the torque ripple because of the stage current recompense of a brushless dc motor (BLDCM) drive system. A blend of a three-level diode clampped multilevel inverter (3-level DCMLI), an altered single-ended primary-inductor converter (SEPIC), and a dc-transport voltage selector circuit is utilized in the proposed torque ripple concealment circuit.

For productive concealment of torque throb, the dc-transport voltage selector circuit is utilized to apply the controlled dc-transport voltage from the changed SEPIC amid the compensation interim. Keeping in mind the end goal to additionally relieve the torque swell throb, the 3-level DCMLI is utilized in the proposed circuit. At long last, recreation and test results demonstrate that the proposed topology is an appealing alternative to lessen the replacement torque ripple essentially at low-and fast applications.

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