Effect of Pole and Slot Combination on the AC Joule Loss of Outer-Rotor Permanent Magnet Synchronous Motors Using a High Fill Factor Machined Coil

This paper proposes a design guideline for selecting the pole and slot combination of an outer-rotor permanent magnet synchronous motor (PMSM) using a maximum slot occupation (MSO) coil. Because the MSO coil has a large conductor area, the AC Joule loss in the conductors may be increased at high fre...

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Published in:Energies (Basel) 2021-06, Vol.14 (11), p.3073
Main Authors: Park, Soo-Hwan, Lee, Eui-Chun, Lee, Gi-Ju, Kwon, Soon-O., Lim, Myung-Seop
Format: Article
Language:English
Subjects:
AC Joule loss
Conductors
Design
Efficiency
Fluctuations
Flux
frozen permeability
Leakage
MSO coil
outer-rotor
Permanent magnets
Permeability
pole and slot combination
Rotors
Skin
Skin effect
Synchronous motors
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cited_by cdi_FETCH-LOGICAL-c361t-e49d105ce6db3b51b4144864c4fb61d4b0f31d8344a4d7d5c03c4ae0d7c618493
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container_end_page
container_issue 11
container_start_page 3073
container_title Energies (Basel)
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creator Park, Soo-Hwan
Lee, Eui-Chun
Lee, Gi-Ju
Kwon, Soon-O.
Lim, Myung-Seop
description This paper proposes a design guideline for selecting the pole and slot combination of an outer-rotor permanent magnet synchronous motor (PMSM) using a maximum slot occupation (MSO) coil. Because the MSO coil has a large conductor area, the AC Joule loss in the conductors may be increased at high frequencies. To ensure high-efficiency for the PMSM, it is necessary to reduce the loss. Thus, it is important to select the pole- and slot- combination that has the minimum AC Joule loss. The loss is caused by skin/proximity effects and variations in the slot leakage flux. The skin effect is due to the armature winding and the variation in the slot leakage flux is due to the field flux. A method for separating the AC Joule loss due to each component using the frozen permeability method is proposed. Based on the proposed method, the effect of each cause on the loss at various pole- and slot- combinations is analyzed in this study.
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1996-1073
language eng
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subjects AC Joule loss
Conductors
Design
Efficiency
Fluctuations
Flux
frozen permeability
Leakage
MSO coil
outer-rotor
Permanent magnets
Permeability
pole and slot combination
Rotors
Skin
Skin effect
Synchronous motors
title Effect of Pole and Slot Combination on the AC Joule Loss of Outer-Rotor Permanent Magnet Synchronous Motors Using a High Fill Factor Machined Coil
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