A Cogging Torque Minimization Procedure for Interior Permanent Magnet Synchronous Motors Based on a Progressive Modification of the Rotor Lamination Geometry

Massimo Caruso, Antonino Oscar Di Tommaso, Rosario Miceli and Fabio Viola
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Massimo Caruso: Department of Engineering, University of Palermo, Viale delle Scienze, Building nr. 9, 90128 Palermo, Italy
Antonino Oscar Di Tommaso: Department of Engineering, University of Palermo, Viale delle Scienze, Building nr. 9, 90128 Palermo, Italy
Rosario Miceli: Department of Engineering, University of Palermo, Viale delle Scienze, Building nr. 9, 90128 Palermo, Italy
Fabio Viola: Department of Engineering, University of Palermo, Viale delle Scienze, Building nr. 9, 90128 Palermo, Italy

Energies, 2022, vol. 15, issue 14, 1-19

Abstract: This article describes a simple cogging torque minimization procedure for interior permanent magnet synchronous machines (IPMSMs), consisting of a progressive modification of the rotor lamination geometry. This procedure can be generalized for the main topologies of PMSM, independently of the number of stator slots or the location of the permanent magnets. For this purpose, a basic IPMSM structure is analyzed by means of the FEM (finite element method) approach, and then, several other IPMSM geometries, obtained by adequately modifying the rotor lamination geometry of the basic IPMSM model without changing its stator configuration, are proposed and discussed. The trends of the cogging torque generated by each model are computed and compared. From this comparison, it is demonstrated that, by simply acting on the shape of the rotor lamination and by choosing the optimized pattern, the cogging torque components can be theoretically canceled.

Keywords: cogging torque; interior permanent magnet synchronous motors; permanent magnets; harmonic analysis; FEM analysis; rotor lamination (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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