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Optimization of offshore direct drive wind turbine generators with consideration of permanent magnet grade and temperature

Nurul Azim Bhuiyan, Alasdair McDonald, Nurul Azim Bhuiyan Orcid Logo

IEEE Transactions on Energy Conversion, Pages: 1 - 1

Swansea University Author: Nurul Azim Bhuiyan Orcid Logo

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DOI (Published version): 10.1109/TEC.2018.2879442

Abstract

In this paper, the main objective is to optimize permanent magnet synchronous generators for offshore direct drive wind turbine, examining the best choice of magnet grades, BHmax and working temperature. A surface-mounted Nd-Fe-B generator is designed electromagnetically and structurally and optimiz...

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Published in: IEEE Transactions on Energy Conversion
ISSN: 0885-8969 1558-0059
Published: IEEE Power & Energy Society 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa45487
first_indexed 2018-11-07T15:23:29Z
last_indexed 2019-01-08T19:58:34Z
id cronfa45487
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spelling 2019-01-08T14:35:15.0166405 v2 45487 2018-11-07 Optimization of offshore direct drive wind turbine generators with consideration of permanent magnet grade and temperature 36b3a440ac5e333da9442e2820d11c63 0000-0002-1646-2096 Nurul Azim Bhuiyan Nurul Azim Bhuiyan true false 2018-11-07 ACEM In this paper, the main objective is to optimize permanent magnet synchronous generators for offshore direct drive wind turbine, examining the best choice of magnet grades, BHmax and working temperature. A surface-mounted Nd-Fe-B generator is designed electromagnetically and structurally and optimized for different rated powers of 6, 8 and 10 MW. The results show that the cost of energy decreases as the wind turbine’s rated power increases. Further optimizations were carried out using different neodymium magnet grades and it was found that the higher magnet grades produce a lower cost of energy. In addition, steps were taken to estimate the effect of magnet temperature. A detailed thermal model is used to calculate the cooling airflow requirements to bring the magnet operating temperature from 120°C to 80°C. Allowing the use of cheaper temperature grades of magnets, the additional cooling reduces winding losses and improves the effective BHmax of the magnets. Journal Article IEEE Transactions on Energy Conversion 1 1 IEEE Power & Energy Society 0885-8969 1558-0059 Cooling system, cost of energy, magnet grade, optimization, permanent magnet generator, thermal model, wind turbine. 31 12 2018 2018-12-31 10.1109/TEC.2018.2879442 https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=60 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University 2019-01-08T14:35:15.0166405 2018-11-07T12:14:48.5246942 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering Nurul Azim Bhuiyan 1 Alasdair McDonald 2 Nurul Azim Bhuiyan 0000-0002-1646-2096 3 0045487-07112018121536.pdf FINALVERSION.pdf 2018-11-07T12:15:36.5130000 Output 494580 application/pdf Accepted Manuscript true 2018-11-07T00:00:00.0000000 true eng
title Optimization of offshore direct drive wind turbine generators with consideration of permanent magnet grade and temperature
spellingShingle Optimization of offshore direct drive wind turbine generators with consideration of permanent magnet grade and temperature
Nurul Azim Bhuiyan
title_short Optimization of offshore direct drive wind turbine generators with consideration of permanent magnet grade and temperature
title_full Optimization of offshore direct drive wind turbine generators with consideration of permanent magnet grade and temperature
title_fullStr Optimization of offshore direct drive wind turbine generators with consideration of permanent magnet grade and temperature
title_full_unstemmed Optimization of offshore direct drive wind turbine generators with consideration of permanent magnet grade and temperature
title_sort Optimization of offshore direct drive wind turbine generators with consideration of permanent magnet grade and temperature
author_id_str_mv 36b3a440ac5e333da9442e2820d11c63
author_id_fullname_str_mv 36b3a440ac5e333da9442e2820d11c63_***_Nurul Azim Bhuiyan
author Nurul Azim Bhuiyan
author2 Nurul Azim Bhuiyan
Alasdair McDonald
Nurul Azim Bhuiyan
format Journal article
container_title IEEE Transactions on Energy Conversion
container_start_page 1
publishDate 2018
institution Swansea University
issn 0885-8969
1558-0059
doi_str_mv 10.1109/TEC.2018.2879442
publisher IEEE Power & Energy Society
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering
url https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=60
document_store_str 1
active_str 0
description In this paper, the main objective is to optimize permanent magnet synchronous generators for offshore direct drive wind turbine, examining the best choice of magnet grades, BHmax and working temperature. A surface-mounted Nd-Fe-B generator is designed electromagnetically and structurally and optimized for different rated powers of 6, 8 and 10 MW. The results show that the cost of energy decreases as the wind turbine’s rated power increases. Further optimizations were carried out using different neodymium magnet grades and it was found that the higher magnet grades produce a lower cost of energy. In addition, steps were taken to estimate the effect of magnet temperature. A detailed thermal model is used to calculate the cooling airflow requirements to bring the magnet operating temperature from 120°C to 80°C. Allowing the use of cheaper temperature grades of magnets, the additional cooling reduces winding losses and improves the effective BHmax of the magnets.
published_date 2018-12-31T01:46:28Z
_version_ 1822455274906058752
score 11.048604

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