Performance Improvement of Grid-Connected Induction Motors through an Auxiliary Winding Set

Luigi Danilo Tornello, Salvatore Foti, Mario Cacciato, Antonio Testa, Giacomo Scelba, Salvatore De Caro, Giuseppe Scarcella and Santi Agatino Rizzo
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Luigi Danilo Tornello: Department of Eletrical Electronic and Computer Engineering, University of Catania, 95125 Catania, Italy
Salvatore Foti: Department of Engineering, University of Messina, 98166 Messina, Italy
Mario Cacciato: Department of Eletrical Electronic and Computer Engineering, University of Catania, 95125 Catania, Italy
Antonio Testa: Department of Engineering, University of Messina, 98166 Messina, Italy
Giacomo Scelba: Department of Eletrical Electronic and Computer Engineering, University of Catania, 95125 Catania, Italy
Salvatore De Caro: Department of Engineering, University of Messina, 98166 Messina, Italy
Giuseppe Scarcella: Department of Eletrical Electronic and Computer Engineering, University of Catania, 95125 Catania, Italy
Santi Agatino Rizzo: Department of Eletrical Electronic and Computer Engineering, University of Catania, 95125 Catania, Italy

Energies, 2021, vol. 14, issue 8, 1-16

Abstract: A technique to improve the performance of grid-connected induction motors by exploiting an auxiliary winding set is proposed in this paper. This auxiliary winding features the same distribution of the main winding, although with a reduced number of turns and it is fed by an inverter a fraction of the power in comparison with the rated size of the induction motor. As shown in the paper, through the auxiliary winding, it is possible to set the machine power factor, increasing the efficiency of the power conversion system and mitigating speed oscillations due to torque disturbances. A mitigation of the grid current peaks due to motor start-up is obtainable. First, the proposed technique is theoretically introduced, then a feasibility assessment is accomplished by simulations.

Keywords: power factor correction; efficiency; induction machines; pulse width modulation inverters; dual stator winding machines; harmonic compensation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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