Reduction in the Cogging Torques in the DCEFSM Motor by Changing the Geometry of the Rotor Teeth

Andrzej Bień, Tomasz Drabek, Dawid Kara and Tomasz Kołacz
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Andrzej Bień: Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering, AGH University of Science and Technology, 30-059 Krakow, Poland
Tomasz Drabek: Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering, AGH University of Science and Technology, 30-059 Krakow, Poland
Dawid Kara: Department of Electrical Engineering, Polytechnic Faculty, University of Applied Sciences in Tarnow, 33-100 Tarnów, Poland
Tomasz Kołacz: Department of Electrical Engineering, Polytechnic Faculty, University of Applied Sciences in Tarnow, 33-100 Tarnów, Poland

Energies, 2022, vol. 15, issue 7, 1-17

Abstract: The paper presents the results of FEM 2D computational studies of a three-phase Direct Current Excited Flux Switching Machine (DCEFSM) electric motor with 15 rotor teeth and 36 stator teeth. The aim of the research was to minimize the cogging torque of the machine by changing the geometry of the rotor teeth and the size of the air gap between the stator and the rotor, with the operating torques unchanged. Computational studies were carried out on the influence of the width of the rotor teeth, the radius of the rounding of their corners, and the size of the air gap on the cogging torque and machine operating torques. The results of the calculations made it possible to select the dimensions of the rotor and the air gap in such a way that the maximum cogging torque was reduced more than six-fold, with the machine operating torques being unchanged. The calculations also showed that it is not possible to increase the value of the operational torques by further changes in the geometry of the rotor teeth and the size of the air gap of the machine.

Keywords: DCEFSM; FEM 2D calculations; electric motor prototype; minimization of the cogging torque (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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