Stator Core Shape Design for Low Core Loss and High Power Density of a Small Surface-Mounted Permanent Motor
1
Department of Electrical and Electronic Systems Engineering, Graduate School of Science and Engineering, Ibaraki University; Hitachi 316-8511, Japan
2
Vector Magnetic Characteristic Technical Laboratory, Usa 879-0442, Japan
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(5), 1418; https://doi.org/10.3390/s20051418
Received: 3 February 2020
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Revised: 24 February 2020
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Accepted: 3 March 2020
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Published: 5 March 2020
(This article belongs to the Special Issue Innovative Field Sensors and Actuators: from Modelling to Measurements)
In this paper, a stator core shape design method is proposed for an improvement in the power density of a small surface-mounted permanent magnet (SPM) motor. In order to improve the power density of a motor, it is necessary to increase its torque or reduce its weight. However, when a stator core shape is miniaturized to reduce the weight of the motor, the winding regions in a motor frequently decrease. Our stator core shape design method improves the power density of a motor by reducing its weight without decreasing the torque and keeping the winding regions constant. Moreover, the core loss of a motor also decreases when using our method. A Bezier curve is used for the determination of a stator core shape. The finite element method in consideration of the vector magnetic properties is used to evaluate the core loss of the motor shaped by our method. As a result, the power density of an SPM motor is improved, and the core loss of the motor decreases.
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Keywords:
core loss; motor core; power density; shape design; vector magnetic properties
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MDPI and ACS Style
Soda, N.; Enokizono, M. Stator Core Shape Design for Low Core Loss and High Power Density of a Small Surface-Mounted Permanent Motor. Sensors 2020, 20, 1418. https://doi.org/10.3390/s20051418
AMA Style
Soda N, Enokizono M. Stator Core Shape Design for Low Core Loss and High Power Density of a Small Surface-Mounted Permanent Motor. Sensors. 2020; 20(5):1418. https://doi.org/10.3390/s20051418
Chicago/Turabian StyleSoda, Naoya, and Masato Enokizono. 2020. "Stator Core Shape Design for Low Core Loss and High Power Density of a Small Surface-Mounted Permanent Motor" Sensors 20, no. 5: 1418. https://doi.org/10.3390/s20051418
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