A new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine

This paper investigates a high power-factor permanent magnet vernier machine (PMVM) equipped with low-coupling hybrid concentrated-winding (CW). The proposed hybrid-CW, carrying both star- and delta-winding sets, exhibits a good filtering property to both sub- and super-order harmonics. Through the...

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Main Authors: Xie, Shuangchun, Cai, Shun, Zuo, Yuefei, Cao, Libing, Zhu, Jingwei, Li, An, Yan, Yuming, Lee, Christopher Ho Tin
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/167701
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1677012023-06-21T05:51:00Z A new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine Xie, Shuangchun Cai, Shun Zuo, Yuefei Cao, Libing Zhu, Jingwei Li, An Yan, Yuming Lee, Christopher Ho Tin School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Concentrated Winding Low-Coupling This paper investigates a high power-factor permanent magnet vernier machine (PMVM) equipped with low-coupling hybrid concentrated-winding (CW). The proposed hybrid-CW, carrying both star- and delta-winding sets, exhibits a good filtering property to both sub- and super-order harmonics. Through the meticulous design of the short coil pitch, the ratio of inductance to magnet flux linkage is decreased, leading to a great improvement in power factor. The proposed low-coupling winding design contributes to further power factor improvement by reducing the inductance while retaining the magnet flux linkage. It is revealed that the mutual coupling between different coils of single phase and that between different windings of three phases are suppressed significantly in the hybrid-CW, thus leading to high power factor and potentially high fault tolerance. Finite element results show that the proposed hybrid-CW PMVM exhibits a significantly improved power factor up to 0.96 from 0.83 and 0.75, as compared with two counterpart PMVMs with open-slot and split-tooth structures, respectively. Benefiting from the magnetic gearing effect, the proposed PMVM has a promising active torque density of 40 Nm/L. Taking end-winding volume into consideration, the proposed PMVM exhibits an actual torque density of 21.98 Nm/L, which is 22.52% and 52.43% higher than the investigated open-slot and split-tooth counterpart PMVMs. Finally, a prototype is fabricated and tested to validate the high-power-factor and high-torque-density features of the proposed hybrid-CW PMVM. National Research Foundation (NRF) Submitted/Accepted version This work was supported by the National Research Foundation (NRF) Singapore under its NRF fellowship Grant NRF-NRFF12-2020-0003. 2023-05-22T06:11:56Z 2023-05-22T06:11:56Z 2022 Journal Article Xie, S., Cai, S., Zuo, Y., Cao, L., Zhu, J., Li, A., Yan, Y. & Lee, C. H. T. (2022). A new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine. IEEE Transactions On Industrial Electronics, 70(11), 11109-11120. https://dx.doi.org/10.1109/TIE.2022.3225868 0278-0046 https://hdl.handle.net/10356/167701 10.1109/TIE.2022.3225868 2-s2.0-85144742967 11 70 11109 11120 en NRF-NRFF12-2020-0003 IEEE Transactions on Industrial Electronics © 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: https://doi.org/10.1109/TIE.2022.3225868. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Concentrated Winding
Low-Coupling
spellingShingle Engineering::Electrical and electronic engineering
Concentrated Winding
Low-Coupling
Xie, Shuangchun
Cai, Shun
Zuo, Yuefei
Cao, Libing
Zhu, Jingwei
Li, An
Yan, Yuming
Lee, Christopher Ho Tin
A new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine
description This paper investigates a high power-factor permanent magnet vernier machine (PMVM) equipped with low-coupling hybrid concentrated-winding (CW). The proposed hybrid-CW, carrying both star- and delta-winding sets, exhibits a good filtering property to both sub- and super-order harmonics. Through the meticulous design of the short coil pitch, the ratio of inductance to magnet flux linkage is decreased, leading to a great improvement in power factor. The proposed low-coupling winding design contributes to further power factor improvement by reducing the inductance while retaining the magnet flux linkage. It is revealed that the mutual coupling between different coils of single phase and that between different windings of three phases are suppressed significantly in the hybrid-CW, thus leading to high power factor and potentially high fault tolerance. Finite element results show that the proposed hybrid-CW PMVM exhibits a significantly improved power factor up to 0.96 from 0.83 and 0.75, as compared with two counterpart PMVMs with open-slot and split-tooth structures, respectively. Benefiting from the magnetic gearing effect, the proposed PMVM has a promising active torque density of 40 Nm/L. Taking end-winding volume into consideration, the proposed PMVM exhibits an actual torque density of 21.98 Nm/L, which is 22.52% and 52.43% higher than the investigated open-slot and split-tooth counterpart PMVMs. Finally, a prototype is fabricated and tested to validate the high-power-factor and high-torque-density features of the proposed hybrid-CW PMVM.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Xie, Shuangchun
Cai, Shun
Zuo, Yuefei
Cao, Libing
Zhu, Jingwei
Li, An
Yan, Yuming
Lee, Christopher Ho Tin
format Article
author Xie, Shuangchun
Cai, Shun
Zuo, Yuefei
Cao, Libing
Zhu, Jingwei
Li, An
Yan, Yuming
Lee, Christopher Ho Tin
author_sort Xie, Shuangchun
title A new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine
title_short A new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine
title_full A new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine
title_fullStr A new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine
title_full_unstemmed A new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine
title_sort new hybrid concentrated-winding concept with improved power factor for permanent magnet vernier machine
publishDate 2023
url https://hdl.handle.net/10356/167701
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