Short-circuit characteristics of superconducting permanent magnet generators for 10 MW wind turbines

Liu, Dong; Song, Xiaowei; Wang, X.; Elhindi, Mohamed; Hasanov, Urfan; Gou, Xiaofan; Ye, Changqing

doi:10.1109/TASC.2021.3056996

Short-circuit characteristics of superconducting permanent magnet generators for 10 MW wind turbines

Journal article (2021)

Authors

Dong Liu Hohai University

Xiaowei Song Vestas Wind System A/S

X. Wang Transport Engineering and Logistics - Mechanical, Maritime and Materials Engineering

Mohamed Elhindi Hohai University

Urfan Hasanov Hohai University

Xiaofan Gou Hohai University

Changqing Ye Hohai University

Research Group

Transport Engineering and Logistics (Mechanical, Maritime and Materials Engineering) (TU Delft)

DOI: https://doi.org/10.1109/TASC.2021.3056996

Wind turbine Permanent magnet Superconducting generator MgB2 Short circuit Demagnetization

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Published Date

2021

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Marine and Transport Technology

Research Group

Transport Engineering and Logistics

Abstract

Superconducting permanent magnet generators (SCPMGs) are a potential candidate for 10 MW direct-drive wind turbine applications. This paper presents two 10 MW SCPMG designs using MgB<sub>2</sub> cables for the armature winding and investigates the short-circuit characteristics of the designed SCPMGs. The first part of the results shows that the SCPMGs can double the shear stress of a conventional low-speed permanent magnet (PM) generator (from 65 kPa to 130 kPa) whilst avoiding demagnetization of the PMs in rated-load operation. However, the power factor has to drop to a range of 0.7-0.8. The second part of the results shows that during a sudden three-phase short circuit, the superconducting armature winding is prone to quench and the PMs are likely to be demagnetized in both proposed designs.

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