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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Andrzej Bień & Tomasz Drabek & Dawid Kara & Tomasz Kołacz, 2022. "Reduction in the Cogging Torques in the DCEFSM Motor by Changing the Geometry of the Rotor Teeth," Energies, MDPI, vol. 15(7), pages 1-17, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:7:p:2455-:d:780645
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    References listed on IDEAS

    as
    1. Tomasz Drabek & Dawid Kara & Tomasz Kołacz & Tomasz Lerch & Jerzy Skwarczyński, 2021. "Measurement Tests and FEM Calculations of DC Excited Flux Switching Motor Prototype," Energies, MDPI, vol. 14(14), pages 1-21, July.
    2. T. A. Anuja & M. Arun Noyal Doss, 2021. "Reduction of Cogging Torque in Surface Mounted Permanent Magnet Brushless DC Motor by Adapting Rotor Magnetic Displacement," Energies, MDPI, vol. 14(10), pages 1-20, May.
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    Cited by:

    1. Jie Yu & Youjun Zhang & Hongyuan Shen & Xiaoqin Zheng, 2022. "Adaptive Online Extraction Method of Slot Harmonics for Multiphase Induction Motor," Energies, MDPI, vol. 15(18), pages 1-14, September.

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