Design and Analysis of HTS Rotor-Field Coils of a 10-MW-Class HTS Generator Considering Various Electric Insulation Techniques

This paper presents the results of an electromagnetic design and numerical analysis conducted on a 10-MW-class second-generation high-temperature superconducting generator (2G HTSG) used in an offshore wind power turbine. To report the operation reliability of 10-MW-class HTSGs employed in offshore...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2020-06, Vol.30 (4), p.1-7
Main Authors: Chae, Yoon Seok, Kim, Ji Hyung, Quach, Huu Luong, Moon, Jae Hyung, Sung, Hae-Jin, Kim, Changhyun, Go, Byeong-Soo, Park, Minwon, Kim, Yeong-Chun, Kim, Hyung-Wook, Jo, Young-Sik, Kim, Ho Min
Format: Article
Language:English
Subjects:
Coils
Critical current (superconductivity)
Design analysis
Electromagnetic properties
Electromagnetics
Equivalent circuits
Field coils
Finite element method
High temperature
High-temperature superconducting generator
High-temperature superconductors
HTS electric insulation technique
Insulation
Insulators
Integrated circuits
Metal-insulator transition
Numerical analysis
Offshore energy sources
offshore wind power
Stability analysis
stability characteristic
Superconducting magnets
Wind power
Wind turbines
Wires
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Summary:This paper presents the results of an electromagnetic design and numerical analysis conducted on a 10-MW-class second-generation high-temperature superconducting generator (2G HTSG) used in an offshore wind power turbine. To report the operation reliability of 10-MW-class HTSGs employed in offshore environment, various electric insulation techniques (EITs) for HTS field coils (FCs), such as no-insulation, metal insulation, and metal-insulator transition insulation, are considered in this study. Using the time-transient solver of the three-dimensional (3D) electromagnetic finite element analysis (FEA), we investigated the electromagnetic characteristics of the HTSG with the three EITs in terms of the electrical output of the HTSG and the critical current of the FCs. To analyze the charging characteristic of the HTS FCs with the three EITs in steady-state operation as well as the electrical in transient-state operation, electric equivalent circuit models are built with key parameters based on the electromagnetic FEA results. Finally, the performances of the HTS FCs are discussed and evaluated in terms of the electromagnetic response and stability characteristics.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2020.2973589