Current balancing of scalar-controlled induction motors with imbalanced cables
Current balancing of scalar-controlled induction motors with imbalanced cables
Current imbalance can appear when driving induction motors through long imbalanced cables. The imbalance increases motor losses and creates torque ripple and vibrations. So far, modifications to the power equipment, e.g. the cable or the transformer, have been proposed as a solution to the problem. This paper proposes a control method that provides current balancing capability for scalar-controlled variable speed drives. The method is based on the extraction of the negative-sequence current component of the motor currents using Second-Order Generalized Integrators (SOGIs) and its suppression by means of a Synchronous Reference Frame (SRF) current controller. The novelty of the method lies on the fact that the frequency and angle information required by the SOGIs and SRF controller are obtained directly from the scalar algorithm, thus offering a simple, robust and computationally effective implementation. Simulation results in MATLAB/Simulink are presented to illustrate its operating principles and demonstrate its effectiveness.
Orfanoudakis, Georgios
c0dd2ee0-ec2c-45c4-8d88-1f1b60c5ac0d
Yuratich, Michael
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Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9
12 November 2022
Orfanoudakis, Georgios
c0dd2ee0-ec2c-45c4-8d88-1f1b60c5ac0d
Yuratich, Michael
f7b84d3a-689b-4879-b2be-bf801b539802
Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9
Orfanoudakis, Georgios, Yuratich, Michael and Sharkh, Suleiman
(2022)
Current balancing of scalar-controlled induction motors with imbalanced cables.
SEPOC 2022, Online, Brazil.
12 - 15 Nov 2022.
6 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Current imbalance can appear when driving induction motors through long imbalanced cables. The imbalance increases motor losses and creates torque ripple and vibrations. So far, modifications to the power equipment, e.g. the cable or the transformer, have been proposed as a solution to the problem. This paper proposes a control method that provides current balancing capability for scalar-controlled variable speed drives. The method is based on the extraction of the negative-sequence current component of the motor currents using Second-Order Generalized Integrators (SOGIs) and its suppression by means of a Synchronous Reference Frame (SRF) current controller. The novelty of the method lies on the fact that the frequency and angle information required by the SOGIs and SRF controller are obtained directly from the scalar algorithm, thus offering a simple, robust and computationally effective implementation. Simulation results in MATLAB/Simulink are presented to illustrate its operating principles and demonstrate its effectiveness.
Text
SEPOC2022 - Current balancing of scalar-controlled IMs
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Accepted/In Press date: 3 October 2022
e-pub ahead of print date: 12 November 2022
Published date: 12 November 2022
Venue - Dates:
SEPOC 2022, Online, Brazil, 2022-11-12 - 2022-11-15
Identifiers
Local EPrints ID: 471239
URI: http://eprints.soton.ac.uk/id/eprint/471239
PURE UUID: d95c4228-aa39-43fd-bfad-241d5bbba3f7
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Date deposited: 01 Nov 2022 17:40
Last modified: 17 Mar 2024 02:41
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Contributors
Author:
Georgios Orfanoudakis
Author:
Michael Yuratich
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