Kana Padinharu, D.K. orcid.org/0000-0002-9270-9724, Li, G.-J. orcid.org/0000-0002-5956-4033, Zhu, Z.Q. orcid.org/0000-0001-7175-3307 et al. (3 more authors) (2020) System-level investigation of multi-MW direct-drive wind power PM vernier generators. IEEE Access, 8. pp. 191433-191446. ISSN 2169-3536
Abstract
Surface mounted permanent magnet Vernier (SPM-V) machines are known for their high torque density but relatively poor power factor compared to conventional SPM machines. The high torque density feature of the SPM-V machines is desirable for direct-drive offshore wind power applications as it leads to reduced generator size, mass and cost. However, their poor power factor can negatively affect the converter cost and efficiency. This paper compares the system-level performance, including generator active and structural components and converter, between the SPM-V and the conventional SPM generator systems. Four different power ratings, i.e. 0.5MW, 3MW, 5MW and 10MW, have been considered to study the trend of system-level performance with increasing power rating. The study shows that the SPM-V generators can be lighter and cheaper than their conventional SPM counterparts. However, after the consideration of converter cost and efficiency, the conventional SPM generator exhibited slightly better overall performance. Nonetheless, with the development of novel Vernier topologies and reduction in converter costs in the future due to emerging technologies, the Vernier generators can still be competitive for direct-drive offshore wind power applications.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/ |
Keywords: | Direct-drive wind generator; power factor; system-level performance; Vernier machine |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/R004900/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 23 Oct 2020 14:19 |
Last Modified: | 04 Feb 2022 17:10 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Refereed: | Yes |
Identification Number: | 10.1109/ACCESS.2020.3032567 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:166840 |