https://doi.org/10.1140/epjs/s11734-025-01495-1
Regular Article
Development and application of fast and efficient approaches for AC losses evaluation in HTS electrical machines
1
Advanced Manufacturing College, Fuzhou University, 350108, Fuzhou, Fujian, China
2
School of Electrical Engineering and Automation, Wuhan University, 430072, Wuhan, China
3
School of Electrical Engineering, Southeast University, 210096, Nanjing, China
4
Quanzhou Equipment Manufacturing Research Center, Fujian Institute of Material Structure, Chinese Academy of Sciences, 362000, Quanzhou, Fujian, China
Received:
30
August
2024
Accepted:
26
January
2025
Published online:
27
February
2025
High-temperature superconducting (HTS) electrical machines are attractive due to much higher efficiency and power density than traditional ones. HTS materials are usually used as rotor coils in a synchronous machine to fully utilize the materials’ high current capacity with no DC loss. However, HTS rotor coils can experience AC losses due to environmental electromagnetic fields in real-world conditions. Though often overlooked for their low values, these losses can be critical in cryogenic conditions. Fast and accurate evaluation of such losses is crucial for practical engineering. In this paper, models for the calculation of AC losses of HTS rotor coils in a realistic electrical machine environment are developed based on the T-A formulation and simplification approaches. The developed T-A homogenization model and T-A grouping model were compared with the T-A model to calculate the losses in the same case and also to verify the accuracy of the models. All models are directly coupled with the generator, and the AC loss calculation and electromagnetic performance analysis are completed within a single model, realizing the integrated numerical simulation of HTS generators. Using the three models developed, the effect of stator tooth structure on an equal power motor is explored as an application.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
