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Stator Shape Optimization for Electrical Motor Torque Density Improvement |
Journal of Magnetics, Volume 21, Number 4, 31 Dec 2016, Pages 570-576 |
Hae-Joong Kim (Rotating Machinery Center, Korea Testing Certification), Youn Hwan Kim (Rotating Machinery Center, Korea Testing Certification), Jae-Won Moon * (Rotating Machinery Center, Korea Testing Certification) |
Abstract |
The shape optimization of the stator and the rotor is important for electrical motor design. Among many motor design parameters, the stator tooth and yoke width are a few of the determinants of noload back-EMF and load torque. In this study, we proposed an equivalent magnetic circuit of motor stator for efficient stator tooth and yoke width shape optimization. Using the proposed equivalent magnetic circuit, we found the optimal tooth and yoke width for minimal magnetic resistance. To verify if load torque is truly maximized for the optimal tooth and yoke width indicated by the proposed method, we performed finite element analysis (FEA) to calculate load torque for different tooth and yoke widths. From the study, we confirmed reliability and usability of the proposed equivalent magnetic circuit.
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Keywords: torque density; power density; electric motor; stator structure; equivalent circuit |
DOI: https://doi.org/10.4283/JMAG.2016.21.4.570 |
Full Text: PDF |
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