New Optimized Fractional Slot Concentrated Winding Design for Torque Ripple Minimization in Permanent Magnet Machine
This paper presents a new optimized fractional slot concentrated winding (FSCW) design for torque ripple minimization in permanent magnet motors through space harmonic reduction. The proposed design offers the minimum total harmonics distortion in the magnetomotive force (MMF) produced by the wind...
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| Autores principales: | , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Stefan cel Mare University of Suceava
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/0b5e766660db43d9bf547b4c3d2f0f16 |
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| Sumario: | This paper presents a new optimized fractional slot concentrated winding (FSCW) design for torque ripple minimization
in permanent magnet motors through space harmonic reduction. The proposed design offers the minimum total harmonics
distortion in the magnetomotive force (MMF) produced by the winding whereas winding factor of the working harmonic
component is set to the maximum value. A detailed mathematical derivation of the winding function is presented for
general symmetrical FSCW using Fourier series expansion. The optimization methodology presented for the new optimized
FSCW design results in optimal number of conductors at optimal slot positions while keeping slot pitch equal in the
core design. The harmonic analysis of various examples of FSCW is presented which shows a significant reduction in
the non-working harmonics in the proposed optimized design. A 24-slot 22-pole permanent magnet synchronous motor is
designed and analyzed using the two-dimensional finite element method. The magnetic analysis of motors shows that
the non-working harmonics in the air-gap flux distribution are minimized in the case of proposed design as obtained
from the analysis of winding functions. The dynamic analysis shows a substantial improvement in the performance of
proposed FSCW machine over the conventional machine. |
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