Fast rotor loss calculations in fractional-slot permanent magnet machines

Faisal Wani; Jianning Dong; Henk Polinder

doi:10.1109/ICELMACH.2018.8506943

Fast rotor loss calculations in fractional-slot permanent magnet machines

Faisal Wani, Jianning Dong, Henk Polinder

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

1 Citation (Scopus)

133 Downloads (Pure)

Abstract

Permanent magnet machines with fractional slot windings are popular because of their shorter end windings, low cost and ease of manufacturing. On the other hand, fractional slot machines have higher eddy current losses in the rotor magnets and sleeve. An accurate calculation of these losses usually involves a time-stepped finite-element analysis with moving rotor, which is time consuming. This paper compares different methods of evaluating these losses using finite element analysis based on their time-cost. The models are mainly divided into two types: time-domain and frequency-domain models. The paper proposes an equivalent frequency-domain analysis in the stator frame for rotor loss calculations, using the Lorentz force term. This method yields similar results to the time-stepped finite element model with a significant time saving. The time saving can be significant in a machine optimization study.

Original language	English
Title of host publication	Proceedings 2018 XIII International Conference on Electrical Machines (ICEM)
Place of Publication	Piscataway, NJ, USA
Publisher	IEEE
Pages	1201-1206
ISBN (Electronic)	978-1-5386-2477-7
ISBN (Print)	978-1-5386-2478-4
DOIs	https://doi.org/10.1109/ICELMACH.2018.8506943
Publication status	Published - 2018
Event	ICEM 2018: 13th International Conference on Electrical Machines - Alexandroupoli, Greece Duration: 3 Sept 2018 → 6 Sept 2018

Conference

Conference	ICEM 2018: 13th International Conference on Electrical Machines
Abbreviated title	ICEM
Country/Territory	Greece
City	Alexandroupoli
Period	3/09/18 → 6/09/18

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

eddy current losses
Finite Element Analysis
Frequency-domain analysis
Lorentz force
permanent magnet machine
Time-domain analysis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/ICELMACH.2018.8506943

Fast_Rotor_Loss_Calculations_in_Fractional-Slot_Permanent_Magnet_MachinesFinal published version, 437 KB

1 Citations
1 Dissertation (TU Delft)

Improving the Reliability of Tidal Turbine Generator Systems
Wani, F. M., 2021, 181 p.
Research output: Thesis › Dissertation (TU Delft)

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506 Downloads (Pure)

Fast Rotor Loss Calculations in Fractional-Slot Permanent Magnet Machines
Wani, F. (Creator), TU Delft - 4TU.ResearchData, 12 Jan 2021
DOI: 10.4121/13352732
Dataset/Software: Software

Cite this

@inproceedings{94e6c5ff67994d55891a639465017cec,

title = "Fast rotor loss calculations in fractional-slot permanent magnet machines",

abstract = "Permanent magnet machines with fractional slot windings are popular because of their shorter end windings, low cost and ease of manufacturing. On the other hand, fractional slot machines have higher eddy current losses in the rotor magnets and sleeve. An accurate calculation of these losses usually involves a time-stepped finite-element analysis with moving rotor, which is time consuming. This paper compares different methods of evaluating these losses using finite element analysis based on their time-cost. The models are mainly divided into two types: time-domain and frequency-domain models. The paper proposes an equivalent frequency-domain analysis in the stator frame for rotor loss calculations, using the Lorentz force term. This method yields similar results to the time-stepped finite element model with a significant time saving. The time saving can be significant in a machine optimization study.",

keywords = "eddy current losses, Finite Element Analysis, Frequency-domain analysis , Lorentz force, permanent magnet machine, Time-domain analysis",

author = "Faisal Wani and Jianning Dong 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.; ICEM 2018: 13th International Conference on Electrical Machines, ICEM ; Conference date: 03-09-2018 Through 06-09-2018",

year = "2018",

doi = "10.1109/ICELMACH.2018.8506943",

language = "English",

isbn = "978-1-5386-2478-4",

pages = "1201--1206",

booktitle = "Proceedings 2018 XIII International Conference on Electrical Machines (ICEM)",

publisher = "IEEE",

address = "United States",

}

Wani, F, Dong, J & Polinder, H 2018, Fast rotor loss calculations in fractional-slot permanent magnet machines. in Proceedings 2018 XIII International Conference on Electrical Machines (ICEM). IEEE, Piscataway, NJ, USA, pp. 1201-1206, ICEM 2018: 13th International Conference on Electrical Machines, Alexandroupoli, Greece, 3/09/18. https://doi.org/10.1109/ICELMACH.2018.8506943

Fast rotor loss calculations in fractional-slot permanent magnet machines. / Wani, Faisal; Dong, Jianning ; Polinder, Henk.
Proceedings 2018 XIII International Conference on Electrical Machines (ICEM). Piscataway, NJ, USA: IEEE, 2018. p. 1201-1206.

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

TY - GEN

T1 - Fast rotor loss calculations in fractional-slot permanent magnet machines

AU - Wani, Faisal

AU - Dong, Jianning

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 - 2018

Y1 - 2018

N2 - Permanent magnet machines with fractional slot windings are popular because of their shorter end windings, low cost and ease of manufacturing. On the other hand, fractional slot machines have higher eddy current losses in the rotor magnets and sleeve. An accurate calculation of these losses usually involves a time-stepped finite-element analysis with moving rotor, which is time consuming. This paper compares different methods of evaluating these losses using finite element analysis based on their time-cost. The models are mainly divided into two types: time-domain and frequency-domain models. The paper proposes an equivalent frequency-domain analysis in the stator frame for rotor loss calculations, using the Lorentz force term. This method yields similar results to the time-stepped finite element model with a significant time saving. The time saving can be significant in a machine optimization study.

AB - Permanent magnet machines with fractional slot windings are popular because of their shorter end windings, low cost and ease of manufacturing. On the other hand, fractional slot machines have higher eddy current losses in the rotor magnets and sleeve. An accurate calculation of these losses usually involves a time-stepped finite-element analysis with moving rotor, which is time consuming. This paper compares different methods of evaluating these losses using finite element analysis based on their time-cost. The models are mainly divided into two types: time-domain and frequency-domain models. The paper proposes an equivalent frequency-domain analysis in the stator frame for rotor loss calculations, using the Lorentz force term. This method yields similar results to the time-stepped finite element model with a significant time saving. The time saving can be significant in a machine optimization study.

KW - eddy current losses

KW - Finite Element Analysis

KW - Frequency-domain analysis

KW - Lorentz force

KW - permanent magnet machine

KW - Time-domain analysis

U2 - 10.1109/ICELMACH.2018.8506943

DO - 10.1109/ICELMACH.2018.8506943

M3 - Conference contribution

SN - 978-1-5386-2478-4

SP - 1201

EP - 1206

BT - Proceedings 2018 XIII International Conference on Electrical Machines (ICEM)

PB - IEEE

CY - Piscataway, NJ, USA

T2 - ICEM 2018: 13th International Conference on Electrical Machines

Y2 - 3 September 2018 through 6 September 2018

ER -

Fast rotor loss calculations in fractional-slot permanent magnet machines

Abstract

Conference

Bibliographical note

Keywords

UN SDGs

Access to Document

Fingerprint

Research output

Improving the Reliability of Tidal Turbine Generator Systems

Datasets

Fast Rotor Loss Calculations in Fractional-Slot Permanent Magnet Machines

Cite this