Design of Low-Cost Synchronous Machine to Prevent Demagnetization

Claudio Bianchini, Ambra Torreggiani, Matteo Davoli and Alberto Bellini
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Claudio Bianchini: Department of Engineering “Enzo Ferrari” (DIEF), University of Modena and Reggio Emilia, 41125 Modena (MO), Italy
Ambra Torreggiani: Department of Engineering “Enzo Ferrari” (DIEF), University of Modena and Reggio Emilia, 41125 Modena (MO), Italy
Matteo Davoli: Raw Power Srl, Via Sicilia 31, 42122 Reggio Emilia (RE), Italy
Alberto Bellini: Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi” (DEI), University of Bologna, 47521 Cesena (FC), Italy

Energies, 2020, vol. 13, issue 14, 1-15

Abstract: The request for high efficiency motor paves the way for the replacement of induction motors with permanent magnet synchronous motors. Although the efficiency is increased, for medium and high power, the current ripple causes significant additional losses in the magnet and lamination; and, high temperature can lead to demagnetization. In this paper, a new rotor topology is proposed and compared to a traditional surface permanent magnet rotor to reduce the magnet losses and protect them from demagnetization. A reference surface permanent magnet machine is compared with the proposed one in terms of performance and magnet losses. Both analytical and experimental analysis are carried out and discussed.

Keywords: permanent-magnet synchronous motors 1; efficiency class 2; iron losses 3; magnet eddy currents 4 (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: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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