Analysis of Rotor Losses in Permanent Magnet Vernier Machines

Liang Xu; Wenxiang Zhao; Rende Li; Shuangxia Niu

doi:10.1109/TIE.2021.3063974

Analysis of Rotor Losses in Permanent Magnet Vernier Machines

Liang Xu, Wenxiang Zhao, Rende Li, Shuangxia Niu

Research output: Journal article publication › Journal article › Academic research › peer-review

63 Citations (Scopus)

Abstract

This paper investigates rotor losses in permanent magnet Vernier machines. By analyzing air-gap field, the harmonic distribution and frequency of modulated open-circuit flux density and armature reaction flux density are obtained. Then, rotor losses production principle is revealed and the influence of each harmonic on the loss is analyzed. Meanwhile, the influence of each harmonic on torque is also studied. It is found that some harmonics have no contribution to torque but produce additional losses. On this basis, a new rotor structure is proposed to suppress the rotor losses. Comparison results indicate that by suppressing non-working harmonics, the rotor losses can be reduced effectively without affecting the effective torque. Finally, the theoretical and finite-element analysis results are verified by prototype tests.

Original language	English
Article number	9374774
Journal	IEEE Transactions on Industrial Electronics
DOIs	https://doi.org/10.1109/TIE.2021.3063974
Publication status	Accepted/In press - Mar 2021

Keywords

Field modulation
finite-element analysis
harmonic analysis
permanent magnet Vernier machine
rotor losses

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering

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10.1109/TIE.2021.3063974

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title = "Analysis of Rotor Losses in Permanent Magnet Vernier Machines",

abstract = "This paper investigates rotor losses in permanent magnet Vernier machines. By analyzing air-gap field, the harmonic distribution and frequency of modulated open-circuit flux density and armature reaction flux density are obtained. Then, rotor losses production principle is revealed and the influence of each harmonic on the loss is analyzed. Meanwhile, the influence of each harmonic on torque is also studied. It is found that some harmonics have no contribution to torque but produce additional losses. On this basis, a new rotor structure is proposed to suppress the rotor losses. Comparison results indicate that by suppressing non-working harmonics, the rotor losses can be reduced effectively without affecting the effective torque. Finally, the theoretical and finite-element analysis results are verified by prototype tests.",

keywords = "Field modulation, finite-element analysis, harmonic analysis, permanent magnet Vernier machine, rotor losses",

author = "Liang Xu and Wenxiang Zhao and Rende Li and Shuangxia Niu",

note = "Publisher Copyright: IEEE",

year = "2021",

month = mar,

doi = "10.1109/TIE.2021.3063974",

language = "English",

journal = "IEEE Transactions on Industrial Electronics",

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T1 - Analysis of Rotor Losses in Permanent Magnet Vernier Machines

AU - Xu, Liang

AU - Zhao, Wenxiang

AU - Li, Rende

AU - Niu, Shuangxia

N1 - Publisher Copyright: IEEE

PY - 2021/3

Y1 - 2021/3

N2 - This paper investigates rotor losses in permanent magnet Vernier machines. By analyzing air-gap field, the harmonic distribution and frequency of modulated open-circuit flux density and armature reaction flux density are obtained. Then, rotor losses production principle is revealed and the influence of each harmonic on the loss is analyzed. Meanwhile, the influence of each harmonic on torque is also studied. It is found that some harmonics have no contribution to torque but produce additional losses. On this basis, a new rotor structure is proposed to suppress the rotor losses. Comparison results indicate that by suppressing non-working harmonics, the rotor losses can be reduced effectively without affecting the effective torque. Finally, the theoretical and finite-element analysis results are verified by prototype tests.

AB - This paper investigates rotor losses in permanent magnet Vernier machines. By analyzing air-gap field, the harmonic distribution and frequency of modulated open-circuit flux density and armature reaction flux density are obtained. Then, rotor losses production principle is revealed and the influence of each harmonic on the loss is analyzed. Meanwhile, the influence of each harmonic on torque is also studied. It is found that some harmonics have no contribution to torque but produce additional losses. On this basis, a new rotor structure is proposed to suppress the rotor losses. Comparison results indicate that by suppressing non-working harmonics, the rotor losses can be reduced effectively without affecting the effective torque. Finally, the theoretical and finite-element analysis results are verified by prototype tests.

KW - Field modulation

KW - finite-element analysis

KW - harmonic analysis

KW - permanent magnet Vernier machine

KW - rotor losses

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DO - 10.1109/TIE.2021.3063974

M3 - Journal article

AN - SCOPUS:85102637244

SN - 0278-0046

JO - IEEE Transactions on Industrial Electronics

JF - IEEE Transactions on Industrial Electronics

M1 - 9374774

ER -

Analysis of Rotor Losses in Permanent Magnet Vernier Machines

Abstract

Keywords

ASJC Scopus subject areas

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