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Torque Ripple and Harmonic Current Reduction in a Three-Level Inverter-Fed Direct-Torque-Controlled Five-Phase Induction Motor | IEEE Journals & Magazine | IEEE Xplore

Torque Ripple and Harmonic Current Reduction in a Three-Level Inverter-Fed Direct-Torque-Controlled Five-Phase Induction Motor


Abstract:

In a switching-table-based direct torque control method (ST-DTC), the torque ripple reduces with increasing number of levels of the torque comparator. The number of level...Show More

Abstract:

In a switching-table-based direct torque control method (ST-DTC), the torque ripple reduces with increasing number of levels of the torque comparator. The number of levels is decided by the availability of the number of voltage vectors according to the topology of the inverter. This paper proposes the seven-level torque comparator to reduce the torque ripple in the DTC-controlled five-phase induction motor fed by the three-level five-phase inverter. In the five-phase induction motor, an elimination of x - y stator flux is inevitable otherwise the stator phase current will be distorted. In order to eliminate the x - y stator flux, the virtual voltage vectors are formed. Experimental results are presented to validate the proposed DTC method.
Published in: IEEE Transactions on Industrial Electronics ( Volume: 64, Issue: 7, July 2017)
Page(s): 5265 - 5275
Date of Publication: 02 March 2017

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