Thermal Model Approach to the YASA Machine for In-Wheel Traction Applications

Guangchen Wang, Yingjie Wang, Yuan Gao, Wei Hua, Qinan Ni, Hengliang Zhang

Research output: Contribution to journalArticle (Academic Journal)peer-review

2 Citations (Scopus)
64 Downloads (Pure)

Abstract

The axial-flux permanent magnet (AFPM) machines with yokeless and segmented armature (YASA) topology are suitable for in-wheel traction systems due to the high power density and efficiency. To guarantee the reliable operation of the YASA machines, an accurate thermal analysis should be undertaken in detail during the electrical machine design phase. The technical contribution of this paper is to establish a detailed thermal analysis model of the YASA machine by the lumped parameter thermal network (LPTN) method. Compared with the computational fluid dynamics (CFD) method and the finite element (FE) method, the LPTN method can obtain an accurate temperature distribution with low time consumption. Firstly, the LPTN model of each component of the YASA machine is constructed with technical details. Secondly, the losses of the YASA machine are obtained by the electromagnetic FE analysis. Then, the temperature distribution of the machine can be calculated by the LPTN model and loss information. Finally, a prototype of the YASA machine is manufactured and its temperature distribution under different operating conditions is tested by TT-K-30 thermocouple temperature sensors. The experimental data matches the LPTN results well.
Original languageEnglish
Article number5431
JournalEnergies
Volume15
Issue number15
DOIs
Publication statusPublished - 27 Jul 2022

Bibliographical note

Funding Information:
This research was funded by The National Key Research and Development Program of China grant number 2021YFB2500703.

Publisher Copyright:
© 2022 by the authors.

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