Numerical Analysis of Stator Magnetic Wedge Effects on Equivalent Circuit Parameters of Brushless Doubly Fed Machines

Salman Abdi Jalebi; Ehsan Abdi; Richard McMahon

doi:10.1109/ICELMACH.2018.8506747

Numerical Analysis of Stator Magnetic Wedge Effects on Equivalent Circuit Parameters of Brushless Doubly Fed Machines

Salman Abdi Jalebi, Ehsan Abdi, Richard McMahon

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

5 Citations (Scopus)

175 Downloads (Pure)

Abstract

This paper studies the effects of magnetic wedges used for closing stator open slots on the Brushless Doubly Fed Machines' (BDFM) equivalent circuit parameters. The BDFM is an attractive generator solution for offshore wind power and can replace doubly-fed slip-ring induction generators. It is shown in this paper that the use of magnetic wedges, commonly used in large induction machines, reduces the stator windings magnetising currents, reflected in the values of magnetising inductances. But they also increase the leakage flux of the stator windings and hence change the series inductance in the equivalent circuit. The series inductance significantly affects the machine performance as well as the rating of its converter. 2-D Finite element analysis of a 250 kW experimental BDFM is used to investigate the effects of magnetic wedges on the machine's magnetic field distribution and how these can alter the machine's parameters values. Experimental tests have also been carried out to validate the analysis.

Original language	English
Title of host publication	XIII International Conference on Electrical Machines (ICEM)
Publisher	IEEE
Pages	879-884
Number of pages	6
ISBN (Electronic)	978-1-5386-2477-7
ISBN (Print)	978-1-5386-2478-4
DOIs	https://doi.org/10.1109/ICELMACH.2018.8506747
Publication status	Published - 25 Oct 2018
Event	XIII International Conference on Electrical Machines - Alexandroupoli, Greece Duration: 3 Sept 2018 → 6 Sept 2018 http://www.icem.cc/2018/

Conference

Conference	XIII International Conference on Electrical Machines
Abbreviated title	ICEM 2018
Country/Territory	Greece
City	Alexandroupoli
Period	3/09/18 → 6/09/18
Internet address	http://www.icem.cc/2018/

Bibliographical note

ISSN - 2381-4802

Keywords

Magnetic flux
Magnetic circuits
Stator windings
Equivalent circuits
Integrated circuit modeling
Rotors

Access to Document

10.1109/ICELMACH.2018.8506747

Post-PrintAccepted author manuscript, 1.6 MBLicence: CC BY

Cite this

Abdi Jalebi, S, Abdi, E & McMahon, R 2018, Numerical Analysis of Stator Magnetic Wedge Effects on Equivalent Circuit Parameters of Brushless Doubly Fed Machines. in XIII International Conference on Electrical Machines (ICEM). IEEE, pp. 879-884, XIII International Conference on Electrical Machines, Alexandroupoli, Greece, 3/09/18. https://doi.org/10.1109/ICELMACH.2018.8506747

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title = "Numerical Analysis of Stator Magnetic Wedge Effects on Equivalent Circuit Parameters of Brushless Doubly Fed Machines",

abstract = "This paper studies the effects of magnetic wedges used for closing stator open slots on the Brushless Doubly Fed Machines' (BDFM) equivalent circuit parameters. The BDFM is an attractive generator solution for offshore wind power and can replace doubly-fed slip-ring induction generators. It is shown in this paper that the use of magnetic wedges, commonly used in large induction machines, reduces the stator windings magnetising currents, reflected in the values of magnetising inductances. But they also increase the leakage flux of the stator windings and hence change the series inductance in the equivalent circuit. The series inductance significantly affects the machine performance as well as the rating of its converter. 2-D Finite element analysis of a 250 kW experimental BDFM is used to investigate the effects of magnetic wedges on the machine's magnetic field distribution and how these can alter the machine's parameters values. Experimental tests have also been carried out to validate the analysis.",

keywords = "Magnetic flux, Magnetic circuits, Stator windings, Equivalent circuits, Integrated circuit modeling, Rotors",

author = "{Abdi Jalebi}, Salman and Ehsan Abdi and Richard McMahon",

note = "ISSN - 2381-4802; XIII International Conference on Electrical Machines, ICEM 2018 ; Conference date: 03-09-2018 Through 06-09-2018",

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T1 - Numerical Analysis of Stator Magnetic Wedge Effects on Equivalent Circuit Parameters of Brushless Doubly Fed Machines

AU - Abdi Jalebi, Salman

AU - Abdi, Ehsan

AU - McMahon, Richard

N1 - ISSN - 2381-4802

PY - 2018/10/25

Y1 - 2018/10/25

N2 - This paper studies the effects of magnetic wedges used for closing stator open slots on the Brushless Doubly Fed Machines' (BDFM) equivalent circuit parameters. The BDFM is an attractive generator solution for offshore wind power and can replace doubly-fed slip-ring induction generators. It is shown in this paper that the use of magnetic wedges, commonly used in large induction machines, reduces the stator windings magnetising currents, reflected in the values of magnetising inductances. But they also increase the leakage flux of the stator windings and hence change the series inductance in the equivalent circuit. The series inductance significantly affects the machine performance as well as the rating of its converter. 2-D Finite element analysis of a 250 kW experimental BDFM is used to investigate the effects of magnetic wedges on the machine's magnetic field distribution and how these can alter the machine's parameters values. Experimental tests have also been carried out to validate the analysis.

AB - This paper studies the effects of magnetic wedges used for closing stator open slots on the Brushless Doubly Fed Machines' (BDFM) equivalent circuit parameters. The BDFM is an attractive generator solution for offshore wind power and can replace doubly-fed slip-ring induction generators. It is shown in this paper that the use of magnetic wedges, commonly used in large induction machines, reduces the stator windings magnetising currents, reflected in the values of magnetising inductances. But they also increase the leakage flux of the stator windings and hence change the series inductance in the equivalent circuit. The series inductance significantly affects the machine performance as well as the rating of its converter. 2-D Finite element analysis of a 250 kW experimental BDFM is used to investigate the effects of magnetic wedges on the machine's magnetic field distribution and how these can alter the machine's parameters values. Experimental tests have also been carried out to validate the analysis.

KW - Magnetic flux

KW - Magnetic circuits

KW - Stator windings

KW - Equivalent circuits

KW - Integrated circuit modeling

KW - Rotors

U2 - 10.1109/ICELMACH.2018.8506747

DO - 10.1109/ICELMACH.2018.8506747

M3 - Conference proceeding

SN - 978-1-5386-2478-4

SP - 879

EP - 884

BT - XIII International Conference on Electrical Machines (ICEM)

PB - IEEE

T2 - XIII International Conference on Electrical Machines

Y2 - 3 September 2018 through 6 September 2018

ER -

Numerical Analysis of Stator Magnetic Wedge Effects on Equivalent Circuit Parameters of Brushless Doubly Fed Machines

Abstract

Conference

Bibliographical note

Keywords

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