Electromechanical dynamics analysis of pole-piece rotors in pseudo direct-drive wind turbine generators

Michiel Desmedt; Jianning Dong; Faisal Wani; Pavol Bauer; Henk Polinder

doi:10.1109/ICEM49940.2020.9270764

Electromechanical dynamics analysis of pole-piece rotors in pseudo direct-drive wind turbine generators

Michiel Desmedt, Jianning Dong, Faisal Wani, Pavol Bauer, Henk Polinder

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

2 Citations (Scopus)

52 Downloads (Pure)

Abstract

This paper analyses the electromechanical dynamics of the pole-piece rotors in a pseudo direct-drive wind turbine generator. The investigated generator has a rated power of 10 MW and was designed in the INNWIND.EU project. One way coupled finite element analysis (FEA) was used to calculate the rotor dynamic defections caused by electromagnetic forces in the air gap. Results show that the deflection exceeds the air gap length which is not mechanically feasible. To solve the problem, three structural modifications are proposed and tested in FEA to reduce the pole piece deflection significantly. The results of the three solutions are compared to idenfity the most promising one. It shows that a ribbed rotor piece topology is the most suitable option because it achieves a reasonable tradeoff between the torque generation and mechanical deflection.

Original language	English
Title of host publication	2020 International Conference on Electrical Machines (ICEM)
Subtitle of host publication	Proceedings
Place of Publication	Piscataway
Publisher	IEEE
Pages	1889-1895
Number of pages	7
ISBN (Electronic)	978-1-7281-9945-0
ISBN (Print)	978-1-7281-9946-7
DOIs	https://doi.org/10.1109/ICEM49940.2020.9270764
Publication status	Published - 2020
Event	2020 International Conference on Electrical Machines, ICEM 2020 - Virtual, Gothenburg, Sweden Duration: 23 Aug 2020 → 26 Aug 2020

Conference

Conference	2020 International Conference on Electrical Machines, ICEM 2020
Country/Territory	Sweden
City	Virtual, Gothenburg
Period	23/08/20 → 26/08/20

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

Permanent magnet generators
Pseudo direct-drive
Structural dynamics
Wind turbine generator

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Electromechanical_Dynamics_Analysis_of_Pole-Piece_Rotors_in_Pseudo_Direct-Drive_Wind_Turbine_GeneratorsFinal published version, 3.01 MB

Cite this

@inproceedings{7fb46b96e81346c2bc6d80593e2e5a0f,

title = "Electromechanical dynamics analysis of pole-piece rotors in pseudo direct-drive wind turbine generators",

abstract = "This paper analyses the electromechanical dynamics of the pole-piece rotors in a pseudo direct-drive wind turbine generator. The investigated generator has a rated power of 10 MW and was designed in the INNWIND.EU project. One way coupled finite element analysis (FEA) was used to calculate the rotor dynamic defections caused by electromagnetic forces in the air gap. Results show that the deflection exceeds the air gap length which is not mechanically feasible. To solve the problem, three structural modifications are proposed and tested in FEA to reduce the pole piece deflection significantly. The results of the three solutions are compared to idenfity the most promising one. It shows that a ribbed rotor piece topology is the most suitable option because it achieves a reasonable tradeoff between the torque generation and mechanical deflection.",

keywords = "Permanent magnet generators, Pseudo direct-drive, Structural dynamics, Wind turbine generator",

author = "Michiel Desmedt and Jianning Dong and Faisal Wani and Pavol Bauer and Henk Polinder",

note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.; 2020 International Conference on Electrical Machines, ICEM 2020 ; Conference date: 23-08-2020 Through 26-08-2020",

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doi = "10.1109/ICEM49940.2020.9270764",

language = "English",

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booktitle = "2020 International Conference on Electrical Machines (ICEM)",

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}

Desmedt, M, Dong, J, Wani, F, Bauer, P & Polinder, H 2020, Electromechanical dynamics analysis of pole-piece rotors in pseudo direct-drive wind turbine generators. in 2020 International Conference on Electrical Machines (ICEM): Proceedings., 9270764, IEEE, Piscataway, pp. 1889-1895, 2020 International Conference on Electrical Machines, ICEM 2020, Virtual, Gothenburg, Sweden, 23/08/20. https://doi.org/10.1109/ICEM49940.2020.9270764

Electromechanical dynamics analysis of pole-piece rotors in pseudo direct-drive wind turbine generators. / Desmedt, Michiel; Dong, Jianning; Wani, Faisal et al.
2020 International Conference on Electrical Machines (ICEM): Proceedings. Piscataway: IEEE, 2020. p. 1889-1895 9270764.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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AU - Desmedt, Michiel

AU - Dong, Jianning

AU - Wani, Faisal

AU - Bauer, Pavol

AU - Polinder, Henk

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2020

Y1 - 2020

N2 - This paper analyses the electromechanical dynamics of the pole-piece rotors in a pseudo direct-drive wind turbine generator. The investigated generator has a rated power of 10 MW and was designed in the INNWIND.EU project. One way coupled finite element analysis (FEA) was used to calculate the rotor dynamic defections caused by electromagnetic forces in the air gap. Results show that the deflection exceeds the air gap length which is not mechanically feasible. To solve the problem, three structural modifications are proposed and tested in FEA to reduce the pole piece deflection significantly. The results of the three solutions are compared to idenfity the most promising one. It shows that a ribbed rotor piece topology is the most suitable option because it achieves a reasonable tradeoff between the torque generation and mechanical deflection.

AB - This paper analyses the electromechanical dynamics of the pole-piece rotors in a pseudo direct-drive wind turbine generator. The investigated generator has a rated power of 10 MW and was designed in the INNWIND.EU project. One way coupled finite element analysis (FEA) was used to calculate the rotor dynamic defections caused by electromagnetic forces in the air gap. Results show that the deflection exceeds the air gap length which is not mechanically feasible. To solve the problem, three structural modifications are proposed and tested in FEA to reduce the pole piece deflection significantly. The results of the three solutions are compared to idenfity the most promising one. It shows that a ribbed rotor piece topology is the most suitable option because it achieves a reasonable tradeoff between the torque generation and mechanical deflection.

KW - Permanent magnet generators

KW - Pseudo direct-drive

KW - Structural dynamics

KW - Wind turbine generator

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BT - 2020 International Conference on Electrical Machines (ICEM)

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T2 - 2020 International Conference on Electrical Machines, ICEM 2020

Y2 - 23 August 2020 through 26 August 2020

ER -

Electromechanical dynamics analysis of pole-piece rotors in pseudo direct-drive wind turbine generators

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Keywords

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