Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration

H. Li; M. Cui; T. Zou; X. Zhang; H. Zhang; Z. Xu; D. Gerada; C. Gerada

doi:10.1109/ICEM51905.2022.9910879

Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration

H. Li
, M. Cui
, T. Zou
, X. Zhang
, H. Zhang
, Z. Xu
, D. Gerada
, C. Gerada

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

Abstract

Interior permanent magnet (IPM) machines are subject to rich harmonics of air-gap magnetic field, which correspond to electromagnetic forces and resulting noise, vibration, and harshness (NVH) issues. In this paper, the NVH issue is evaluated based on a 160 kW IPM motor with focus on zeroth-mode vibration led by radial forces. Based on FEA, the leading radial force harmonics are analyzed and effectively reduced by rotor notching and asymmetric stator slotting techniques. Harmonic response analysis is conducted to verify the radial force optimization results. The results show 97.0% and 54.7% amplitude reduction on 48th temporal harmonic of total radial force for open-circuit and on-load operation, respectively. This corresponds to a 4.8 dB equivalent radiated power level (ERPL) reduction at on-load operation. The optimization approach is found effective in alleviating vibration issues of IPM traction motors without sacrificing output torque capability and will be validated by following-up prototype tests.

Original language	English
Title of host publication	2022 International Conference on Electrical Machines, ICEM 2022
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1906-1912
Number of pages	7
ISBN (Electronic)	9781665414326
DOIs	https://doi.org/10.1109/ICEM51905.2022.9910879
Publication status	Published - 2022
Event	2022 International Conference on Electrical Machines, ICEM 2022 - Valencia, Spain Duration: 5 Sept 2022 → 8 Sept 2022

Publication series

Name	2022 International Conference on Electrical Machines, ICEM 2022

Conference

Conference	2022 International Conference on Electrical Machines, ICEM 2022
Country/Territory	Spain
City	Valencia
Period	5/09/22 → 8/09/22

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Free Keywords

electric vehicle
electromagnetic vibration
IPM
NVH
radial force
rotor notch
zeroth-mode vibration

ASJC Scopus subject areas

Electrical and Electronic Engineering
Mechanical Engineering

Access to Document

10.1109/ICEM51905.2022.9910879

Cite this

Li, H., Cui, M., Zou, T., Zhang, X., Zhang, H., Xu, Z., Gerada, D., & Gerada, C. (2022). Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration. In 2022 International Conference on Electrical Machines, ICEM 2022 (pp. 1906-1912). (2022 International Conference on Electrical Machines, ICEM 2022). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICEM51905.2022.9910879

Li, H. ; Cui, M. ; Zou, T. et al. / Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration. 2022 International Conference on Electrical Machines, ICEM 2022. Institute of Electrical and Electronics Engineers Inc., 2022. pp. 1906-1912 (2022 International Conference on Electrical Machines, ICEM 2022).

@inproceedings{ab7051fc14344e088f833142a71592ba,

title = "Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration",

abstract = "Interior permanent magnet (IPM) machines are subject to rich harmonics of air-gap magnetic field, which correspond to electromagnetic forces and resulting noise, vibration, and harshness (NVH) issues. In this paper, the NVH issue is evaluated based on a 160 kW IPM motor with focus on zeroth-mode vibration led by radial forces. Based on FEA, the leading radial force harmonics are analyzed and effectively reduced by rotor notching and asymmetric stator slotting techniques. Harmonic response analysis is conducted to verify the radial force optimization results. The results show 97.0\% and 54.7\% amplitude reduction on 48th temporal harmonic of total radial force for open-circuit and on-load operation, respectively. This corresponds to a 4.8 dB equivalent radiated power level (ERPL) reduction at on-load operation. The optimization approach is found effective in alleviating vibration issues of IPM traction motors without sacrificing output torque capability and will be validated by following-up prototype tests.",

keywords = "electric vehicle, electromagnetic vibration, IPM, NVH, radial force, rotor notch, zeroth-mode vibration",

author = "H. Li and M. Cui and T. Zou and X. Zhang and H. Zhang and Z. Xu and D. Gerada and C. Gerada",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 2022 International Conference on Electrical Machines, ICEM 2022 ; Conference date: 05-09-2022 Through 08-09-2022",

year = "2022",

doi = "10.1109/ICEM51905.2022.9910879",

language = "English",

series = "2022 International Conference on Electrical Machines, ICEM 2022",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "1906--1912",

booktitle = "2022 International Conference on Electrical Machines, ICEM 2022",

address = "United States",

}

Li, H, Cui, M, Zou, T, Zhang, X, Zhang, H, Xu, Z, Gerada, D & Gerada, C 2022, Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration. in 2022 International Conference on Electrical Machines, ICEM 2022. 2022 International Conference on Electrical Machines, ICEM 2022, Institute of Electrical and Electronics Engineers Inc., pp. 1906-1912, 2022 International Conference on Electrical Machines, ICEM 2022, Valencia, Spain, 5/09/22. https://doi.org/10.1109/ICEM51905.2022.9910879

Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration. / Li, H.; Cui, M.; Zou, T. et al.
2022 International Conference on Electrical Machines, ICEM 2022. Institute of Electrical and Electronics Engineers Inc., 2022. p. 1906-1912 (2022 International Conference on Electrical Machines, ICEM 2022).

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration

AU - Li, H.

AU - Cui, M.

AU - Zou, T.

AU - Zhang, X.

AU - Zhang, H.

AU - Xu, Z.

AU - Gerada, D.

AU - Gerada, C.

PY - 2022

Y1 - 2022

N2 - Interior permanent magnet (IPM) machines are subject to rich harmonics of air-gap magnetic field, which correspond to electromagnetic forces and resulting noise, vibration, and harshness (NVH) issues. In this paper, the NVH issue is evaluated based on a 160 kW IPM motor with focus on zeroth-mode vibration led by radial forces. Based on FEA, the leading radial force harmonics are analyzed and effectively reduced by rotor notching and asymmetric stator slotting techniques. Harmonic response analysis is conducted to verify the radial force optimization results. The results show 97.0% and 54.7% amplitude reduction on 48th temporal harmonic of total radial force for open-circuit and on-load operation, respectively. This corresponds to a 4.8 dB equivalent radiated power level (ERPL) reduction at on-load operation. The optimization approach is found effective in alleviating vibration issues of IPM traction motors without sacrificing output torque capability and will be validated by following-up prototype tests.

AB - Interior permanent magnet (IPM) machines are subject to rich harmonics of air-gap magnetic field, which correspond to electromagnetic forces and resulting noise, vibration, and harshness (NVH) issues. In this paper, the NVH issue is evaluated based on a 160 kW IPM motor with focus on zeroth-mode vibration led by radial forces. Based on FEA, the leading radial force harmonics are analyzed and effectively reduced by rotor notching and asymmetric stator slotting techniques. Harmonic response analysis is conducted to verify the radial force optimization results. The results show 97.0% and 54.7% amplitude reduction on 48th temporal harmonic of total radial force for open-circuit and on-load operation, respectively. This corresponds to a 4.8 dB equivalent radiated power level (ERPL) reduction at on-load operation. The optimization approach is found effective in alleviating vibration issues of IPM traction motors without sacrificing output torque capability and will be validated by following-up prototype tests.

KW - electric vehicle

KW - electromagnetic vibration

KW - IPM

KW - NVH

KW - radial force

KW - rotor notch

KW - zeroth-mode vibration

UR - https://www.scopus.com/pages/publications/85141079218

U2 - 10.1109/ICEM51905.2022.9910879

DO - 10.1109/ICEM51905.2022.9910879

M3 - Conference contribution

AN - SCOPUS:85141079218

T3 - 2022 International Conference on Electrical Machines, ICEM 2022

SP - 1906

EP - 1912

BT - 2022 International Conference on Electrical Machines, ICEM 2022

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2022 International Conference on Electrical Machines, ICEM 2022

Y2 - 5 September 2022 through 8 September 2022

ER -

Li H, Cui M, Zou T, Zhang X, Zhang H, Xu Z et al. Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration. In 2022 International Conference on Electrical Machines, ICEM 2022. Institute of Electrical and Electronics Engineers Inc. 2022. p. 1906-1912. (2022 International Conference on Electrical Machines, ICEM 2022). doi: 10.1109/ICEM51905.2022.9910879

Radial Force Analysis and Optimization of Interior Permanent Magnet Traction Motor for Reduction of Electromagnetic Vibration

Abstract

Publication series

Conference

UN SDGs

Free Keywords

ASJC Scopus subject areas

Access to Document

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