Analytical method for overhang effect of surface-mounted permanent-magnet motor using conformal mapping

Young Yoon Ko; Jun Young Song; Myung Ki Seo; Wonseok Han; Yong Jae Kim; Sang Yong Jung

doi:10.1109/TMAG.2018.2841017

Analytical method for overhang effect of surface-mounted permanent-magnet motor using conformal mapping

Young Yoon Ko
, Jun Young Song
, Myung Ki Seo
, Wonseok Han
, Yong Jae Kim
, Sang Yong Jung

Department of Electronic and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

In this paper, an analytical method for predicting the rotor overhang (OH) effect is presented using two types of conformal mappings (CMs), which are the r - θ and zr plane CMs. First, the no-load air-gap flux density (AFD) of a slotted air gap without OH is determined using the r θ plane CM. Second, the complex relative air-gap permeance (CRAP) in the zr plane is obtained by the zr plane CM. This helps in taking the OH effect into account. Finally, the no-load AFD of the slotted and OH air gaps in cylindrical coordinates is derived from the no-load AFD in the r θ plane with CRAP along the z-axis. The accuracy of the presented method is verified by comparing the results of no-load analysis with those of 3-D finite-element analysis.

Original language	English
Article number	8387787
Journal	IEEE Transactions on Magnetics
Volume	54
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2018.2841017
State	Published - Nov 2018

Keywords

Air-gap permeance
analytical method
conformal mapping (CM)
overhang (OH) structure
permanent magnet (PM) motor

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10.1109/TMAG.2018.2841017

Cite this

@article{cf573e268c044d809deee108d2484d8d,

title = "Analytical method for overhang effect of surface-mounted permanent-magnet motor using conformal mapping",

abstract = "In this paper, an analytical method for predicting the rotor overhang (OH) effect is presented using two types of conformal mappings (CMs), which are the r - θ and zr plane CMs. First, the no-load air-gap flux density (AFD) of a slotted air gap without OH is determined using the r θ plane CM. Second, the complex relative air-gap permeance (CRAP) in the zr plane is obtained by the zr plane CM. This helps in taking the OH effect into account. Finally, the no-load AFD of the slotted and OH air gaps in cylindrical coordinates is derived from the no-load AFD in the r θ plane with CRAP along the z-axis. The accuracy of the presented method is verified by comparing the results of no-load analysis with those of 3-D finite-element analysis.",

keywords = "Air-gap permeance, analytical method, conformal mapping (CM), overhang (OH) structure, permanent magnet (PM) motor",

author = "Ko, \{Young Yoon\} and Song, \{Jun Young\} and Seo, \{Myung Ki\} and Wonseok Han and Kim, \{Yong Jae\} and Jung, \{Sang Yong\}",

note = "Publisher Copyright: {\textcopyright} 1965-2012 IEEE.",

year = "2018",

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doi = "10.1109/TMAG.2018.2841017",

language = "English",

volume = "54",

journal = "IEEE Transactions on Magnetics",

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T1 - Analytical method for overhang effect of surface-mounted permanent-magnet motor using conformal mapping

AU - Ko, Young Yoon

AU - Song, Jun Young

AU - Seo, Myung Ki

AU - Han, Wonseok

AU - Kim, Yong Jae

AU - Jung, Sang Yong

PY - 2018/11

Y1 - 2018/11

N2 - In this paper, an analytical method for predicting the rotor overhang (OH) effect is presented using two types of conformal mappings (CMs), which are the r - θ and zr plane CMs. First, the no-load air-gap flux density (AFD) of a slotted air gap without OH is determined using the r θ plane CM. Second, the complex relative air-gap permeance (CRAP) in the zr plane is obtained by the zr plane CM. This helps in taking the OH effect into account. Finally, the no-load AFD of the slotted and OH air gaps in cylindrical coordinates is derived from the no-load AFD in the r θ plane with CRAP along the z-axis. The accuracy of the presented method is verified by comparing the results of no-load analysis with those of 3-D finite-element analysis.

AB - In this paper, an analytical method for predicting the rotor overhang (OH) effect is presented using two types of conformal mappings (CMs), which are the r - θ and zr plane CMs. First, the no-load air-gap flux density (AFD) of a slotted air gap without OH is determined using the r θ plane CM. Second, the complex relative air-gap permeance (CRAP) in the zr plane is obtained by the zr plane CM. This helps in taking the OH effect into account. Finally, the no-load AFD of the slotted and OH air gaps in cylindrical coordinates is derived from the no-load AFD in the r θ plane with CRAP along the z-axis. The accuracy of the presented method is verified by comparing the results of no-load analysis with those of 3-D finite-element analysis.

KW - Air-gap permeance

KW - analytical method

KW - conformal mapping (CM)

KW - overhang (OH) structure

KW - permanent magnet (PM) motor

UR - https://www.scopus.com/pages/publications/85048618690

U2 - 10.1109/TMAG.2018.2841017

DO - 10.1109/TMAG.2018.2841017

M3 - Article

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SN - 0018-9464

VL - 54

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 11

M1 - 8387787

ER -

Analytical method for overhang effect of surface-mounted permanent-magnet motor using conformal mapping

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Keywords

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