ANALYSIS AND SIMPLIFIED HYBRID ANALYTICAL CALCULATION OF AC COPPER LOSS IN YASA MOTOR WINDINGS

Zhiteng Ma; Jiaxin Li; Chengming Zhang; Jun Che; Qun Lei

doi:10.1049/icp.2025.4223

ANALYSIS AND SIMPLIFIED HYBRID ANALYTICAL CALCULATION OF AC COPPER LOSS IN YASA MOTOR WINDINGS

Zhiteng Ma
, Jiaxin Li
, Chengming Zhang^*
, Jun Che
, Qun Lei

^*Corresponding author for this work

School of Electrical Engineering and Automation, Harbin Institute of Technology

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

Abstract

In the YASA motor investigated in this study, additively manufactured windings are adopted to enhance torque density. During the optimization process, the computation of AC copper losses proves time-consuming and computationally intensive. To address this challenge, a simplified hybrid analytical method is proposed for calculating these losses. The process begins with extracting the winding magnetic flux density distribution through finite element methods (FEM), followed by necessary data processing. Subsequently, an analytical model is utilized to compute the winding eddy current losses. This paper details the derivation of analytical eddy current loss models applicable to conventional flat wire windings and three types of profiled conductor windings. The accuracy of the model is rigorously validated through comparative analysis with 3D FEM results. This approach reduces the computation time to one-sixth of that required by a full 3D FEM simulation while maintaining computational accuracy, thereby significantly enhancing design and optimization efficiency.

Original language	English
Title of host publication	9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025
Publisher	Institution of Engineering and Technology
Pages	209-214
Number of pages	6
Volume	2025
Edition	37
ISBN (Electronic)	9781807050207, 9781807050344, 9781807050351, 9781807050375, 9781837242634, 9781837242900, 9781837242917, 9781837243143, 9781837243150, 9781837243167, 9781837243235, 9781837243341, 9781837243358, 9781837245277, 9781837246847, 9781837246854, 9781837247004, 9781837247011, 9781837247028, 9781837247035, 9781837247042, 9781837247059, 9781837247257, 9781837247264, 9781837247271, 9781837247295, 9781837247325, 9781837247332, 9781837249916
DOIs	https://doi.org/10.1049/icp.2025.4223
State	Published - 1 Dec 2025
Externally published	Yes
Event	9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025 - Harbin, China Duration: 10 Oct 2025 → 12 Oct 2025

Conference

Conference	9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025
Country/Territory	China
City	Harbin
Period	10/10/25 → 12/10/25

Keywords

AC COPPER LOSS
HYBRID ANALYTICAL METHOD
YASA MOTOR

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10.1049/icp.2025.4223

Cite this

@inproceedings{7ee8ef5fcc1f408ebe6f6dc2ccb3abff,

title = "ANALYSIS AND SIMPLIFIED HYBRID ANALYTICAL CALCULATION OF AC COPPER LOSS IN YASA MOTOR WINDINGS",

abstract = "In the YASA motor investigated in this study, additively manufactured windings are adopted to enhance torque density. During the optimization process, the computation of AC copper losses proves time-consuming and computationally intensive. To address this challenge, a simplified hybrid analytical method is proposed for calculating these losses. The process begins with extracting the winding magnetic flux density distribution through finite element methods (FEM), followed by necessary data processing. Subsequently, an analytical model is utilized to compute the winding eddy current losses. This paper details the derivation of analytical eddy current loss models applicable to conventional flat wire windings and three types of profiled conductor windings. The accuracy of the model is rigorously validated through comparative analysis with 3D FEM results. This approach reduces the computation time to one-sixth of that required by a full 3D FEM simulation while maintaining computational accuracy, thereby significantly enhancing design and optimization efficiency.",

keywords = "AC COPPER LOSS, HYBRID ANALYTICAL METHOD, YASA MOTOR",

author = "Zhiteng Ma and Jiaxin Li and Chengming Zhang and Jun Che and Qun Lei",

note = "Publisher Copyright: {\textcopyright} The Institution of Engineering \& Technology 2025.; 9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025 ; Conference date: 10-10-2025 Through 12-10-2025",

year = "2025",

month = dec,

day = "1",

doi = "10.1049/icp.2025.4223",

language = "英语",

volume = "2025",

pages = "209--214",

booktitle = "9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025",

publisher = "Institution of Engineering and Technology",

address = "英国",

edition = "37",

}

Ma, Z, Li, J, Zhang, C, Che, J & Lei, Q 2025, ANALYSIS AND SIMPLIFIED HYBRID ANALYTICAL CALCULATION OF AC COPPER LOSS IN YASA MOTOR WINDINGS. in 9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025. 37 edn, vol. 2025, Institution of Engineering and Technology, pp. 209-214, 9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025, Harbin, China, 10/10/25. https://doi.org/10.1049/icp.2025.4223

ANALYSIS AND SIMPLIFIED HYBRID ANALYTICAL CALCULATION OF AC COPPER LOSS IN YASA MOTOR WINDINGS. / Ma, Zhiteng; Li, Jiaxin; Zhang, Chengming et al.
9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025. Vol. 2025 37. ed. Institution of Engineering and Technology, 2025. p. 209-214.

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

TY - GEN

T1 - ANALYSIS AND SIMPLIFIED HYBRID ANALYTICAL CALCULATION OF AC COPPER LOSS IN YASA MOTOR WINDINGS

AU - Ma, Zhiteng

AU - Li, Jiaxin

AU - Zhang, Chengming

AU - Che, Jun

AU - Lei, Qun

PY - 2025/12/1

Y1 - 2025/12/1

N2 - In the YASA motor investigated in this study, additively manufactured windings are adopted to enhance torque density. During the optimization process, the computation of AC copper losses proves time-consuming and computationally intensive. To address this challenge, a simplified hybrid analytical method is proposed for calculating these losses. The process begins with extracting the winding magnetic flux density distribution through finite element methods (FEM), followed by necessary data processing. Subsequently, an analytical model is utilized to compute the winding eddy current losses. This paper details the derivation of analytical eddy current loss models applicable to conventional flat wire windings and three types of profiled conductor windings. The accuracy of the model is rigorously validated through comparative analysis with 3D FEM results. This approach reduces the computation time to one-sixth of that required by a full 3D FEM simulation while maintaining computational accuracy, thereby significantly enhancing design and optimization efficiency.

AB - In the YASA motor investigated in this study, additively manufactured windings are adopted to enhance torque density. During the optimization process, the computation of AC copper losses proves time-consuming and computationally intensive. To address this challenge, a simplified hybrid analytical method is proposed for calculating these losses. The process begins with extracting the winding magnetic flux density distribution through finite element methods (FEM), followed by necessary data processing. Subsequently, an analytical model is utilized to compute the winding eddy current losses. This paper details the derivation of analytical eddy current loss models applicable to conventional flat wire windings and three types of profiled conductor windings. The accuracy of the model is rigorously validated through comparative analysis with 3D FEM results. This approach reduces the computation time to one-sixth of that required by a full 3D FEM simulation while maintaining computational accuracy, thereby significantly enhancing design and optimization efficiency.

KW - AC COPPER LOSS

KW - HYBRID ANALYTICAL METHOD

KW - YASA MOTOR

UR - https://www.scopus.com/pages/publications/105040561515

U2 - 10.1049/icp.2025.4223

DO - 10.1049/icp.2025.4223

M3 - 会议稿件

AN - SCOPUS:105040561515

VL - 2025

SP - 209

EP - 214

BT - 9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025

PB - Institution of Engineering and Technology

T2 - 9th International Conference on Electromagnetic Field Problems and Applications, ICEF 2025

Y2 - 10 October 2025 through 12 October 2025

ER -

ANALYSIS AND SIMPLIFIED HYBRID ANALYTICAL CALCULATION OF AC COPPER LOSS IN YASA MOTOR WINDINGS

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Keywords

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