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

Soo-Hwan Park, Eui-Chun Lee, Gi-Ju Lee, Soon-O. Kwon and Myung-Seop Lim
Additional contact information
Soo-Hwan Park: Department of Automotive Engineering, Hanyang University, Seoul 04763, Korea
Eui-Chun Lee: Department of Automotive Engineering, Hanyang University, Seoul 04763, Korea
Gi-Ju Lee: Safety System R&D Group, Korea Institute of Industrial Technology, Daegu 42994, Korea
Soon-O. Kwon: Safety System R&D Group, Korea Institute of Industrial Technology, Daegu 42994, Korea
Myung-Seop Lim: Department of Automotive Engineering, Hanyang University, Seoul 04763, Korea

Energies, 2021, vol. 14, issue 11, 1-11

Abstract: 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.

Keywords: AC Joule loss; frozen permeability; MSO coil; outer-rotor; pole and slot combination (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/11/3073/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/11/3073/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:11:p:3073-:d:561924

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().