Analytical prediction of the flux reversal permanent magnet machine with Halbach array magnets in rotor slot considering saturation

Abstract This study presents an improved sub‐domain analytical model for the characteristic evaluation of the flux reversal permanent magnet machine with Halbach array magnets (FRPMM‐HAM) in rotor slot. The influence of iron saturation is considered by equating iron reluctances into airgap. Based on...

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Main Authors: Fei Zhao, Kuang Yang, Chengming Zhang, Liyi Li
Format: Article
Language:English
Published: Wiley 2022-06-01
Series:IET Renewable Power Generation
Online Access:https://doi.org/10.1049/rpg2.12452
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author Fei Zhao
Kuang Yang
Chengming Zhang
Liyi Li
author_facet Fei Zhao
Kuang Yang
Chengming Zhang
Liyi Li
author_sort Fei Zhao
collection DOAJ
description Abstract This study presents an improved sub‐domain analytical model for the characteristic evaluation of the flux reversal permanent magnet machine with Halbach array magnets (FRPMM‐HAM) in rotor slot. The influence of iron saturation is considered by equating iron reluctances into airgap. Based on the different material magnetic permeabilities, the FRPMM‐HAM is divided into several regions, including slots, permanent magnets (PMs), airgap and so on. By solving the Maxwell equations in polar coordinate for each region according to the boundary conditions, the vector magnetic potential can be derived. According to the vector magnetic potential, the airgap flux density distributions are predicted and the electromagnetic characteristics are calculated. The average magnetic density of the tooth and yoke is combined with the Bertotti model to calculate the iron loss. Besides, the eddy current loss of PMs is also calculated. The accuracy of analytical results is validated via the finite element method (FEM).
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spelling doaj.art-60281174fb6145c2ae8af75aa03ec0a42022-12-22T00:18:47ZengWileyIET Renewable Power Generation1752-14161752-14242022-06-011681562157610.1049/rpg2.12452Analytical prediction of the flux reversal permanent magnet machine with Halbach array magnets in rotor slot considering saturationFei Zhao0Kuang Yang1Chengming Zhang2Liyi Li3Harbin Institute of Technology (Shenzhen) Shenzhen ChinaHarbin Institute of Technology (Shenzhen) Shenzhen ChinaHarbin Institute of Technology Harbin ChinaHarbin Institute of Technology Harbin ChinaAbstract This study presents an improved sub‐domain analytical model for the characteristic evaluation of the flux reversal permanent magnet machine with Halbach array magnets (FRPMM‐HAM) in rotor slot. The influence of iron saturation is considered by equating iron reluctances into airgap. Based on the different material magnetic permeabilities, the FRPMM‐HAM is divided into several regions, including slots, permanent magnets (PMs), airgap and so on. By solving the Maxwell equations in polar coordinate for each region according to the boundary conditions, the vector magnetic potential can be derived. According to the vector magnetic potential, the airgap flux density distributions are predicted and the electromagnetic characteristics are calculated. The average magnetic density of the tooth and yoke is combined with the Bertotti model to calculate the iron loss. Besides, the eddy current loss of PMs is also calculated. The accuracy of analytical results is validated via the finite element method (FEM).https://doi.org/10.1049/rpg2.12452
spellingShingle Fei Zhao
Kuang Yang
Chengming Zhang
Liyi Li
Analytical prediction of the flux reversal permanent magnet machine with Halbach array magnets in rotor slot considering saturation
IET Renewable Power Generation
title Analytical prediction of the flux reversal permanent magnet machine with Halbach array magnets in rotor slot considering saturation
title_full Analytical prediction of the flux reversal permanent magnet machine with Halbach array magnets in rotor slot considering saturation
title_fullStr Analytical prediction of the flux reversal permanent magnet machine with Halbach array magnets in rotor slot considering saturation
title_full_unstemmed Analytical prediction of the flux reversal permanent magnet machine with Halbach array magnets in rotor slot considering saturation
title_short Analytical prediction of the flux reversal permanent magnet machine with Halbach array magnets in rotor slot considering saturation
title_sort analytical prediction of the flux reversal permanent magnet machine with halbach array magnets in rotor slot considering saturation
url https://doi.org/10.1049/rpg2.12452
work_keys_str_mv AT feizhao analyticalpredictionofthefluxreversalpermanentmagnetmachinewithhalbacharraymagnetsinrotorslotconsideringsaturation
AT kuangyang analyticalpredictionofthefluxreversalpermanentmagnetmachinewithhalbacharraymagnetsinrotorslotconsideringsaturation
AT chengmingzhang analyticalpredictionofthefluxreversalpermanentmagnetmachinewithhalbacharraymagnetsinrotorslotconsideringsaturation
AT liyili analyticalpredictionofthefluxreversalpermanentmagnetmachinewithhalbacharraymagnetsinrotorslotconsideringsaturation