Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range

The subject of this publication is a method of controlling the DC voltage of a PWM rectifier supplied by a multiphase cage induction generator with the number of stator phases greater than three operating in a wide range of driving speeds. Voltage regulation is performed by changing the frequency an...

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Main Authors: Piotr Drozdowski, Dariusz Cholewa
Format: Article
Language:English
Published: MDPI AG 2021-10-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/21/7080
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author Piotr Drozdowski
Dariusz Cholewa
author_facet Piotr Drozdowski
Dariusz Cholewa
author_sort Piotr Drozdowski
collection DOAJ
description The subject of this publication is a method of controlling the DC voltage of a PWM rectifier supplied by a multiphase cage induction generator with the number of stator phases greater than three operating in a wide range of driving speeds. Voltage regulation is performed by changing the frequency and amplitude of the stator voltages with simultaneous switching of the phase sequence of these voltages. The step change of the voltage sequence is made in the designated ranges of the generator speed, which enables the stabilization of the output voltage in a wide range from the minimum speed of about 25% of the rated speed. Such sequence switching changes the number of pole pairs produced by the winding for each supply sequence. The difference compared to multi-speed induction machines is that, in the presented solution, there is only one winding, not a few, which enables good use of the machine’s magnetic core in the same dimensions as for the three-phase machine of a similar power. Steady-state characteristics and dynamic operation were obtained using laboratory measurements of a standalone nine-phase induction generator. The automatic control system maintained the output voltage at the set level, regardless of the generator load and driving power.
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spelling doaj.art-4d07b937b5bd41a991b26f3bb96958472023-11-22T20:43:15ZengMDPI AGEnergies1996-10732021-10-011421708010.3390/en14217080Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide RangePiotr Drozdowski0Dariusz Cholewa1Faculty of Electrical and Computer Engineering, Cracow University of Technology, Warszawska 24 Str., 31-155 Cracow, PolandFaculty of Electrical and Computer Engineering, Cracow University of Technology, Warszawska 24 Str., 31-155 Cracow, PolandThe subject of this publication is a method of controlling the DC voltage of a PWM rectifier supplied by a multiphase cage induction generator with the number of stator phases greater than three operating in a wide range of driving speeds. Voltage regulation is performed by changing the frequency and amplitude of the stator voltages with simultaneous switching of the phase sequence of these voltages. The step change of the voltage sequence is made in the designated ranges of the generator speed, which enables the stabilization of the output voltage in a wide range from the minimum speed of about 25% of the rated speed. Such sequence switching changes the number of pole pairs produced by the winding for each supply sequence. The difference compared to multi-speed induction machines is that, in the presented solution, there is only one winding, not a few, which enables good use of the machine’s magnetic core in the same dimensions as for the three-phase machine of a similar power. Steady-state characteristics and dynamic operation were obtained using laboratory measurements of a standalone nine-phase induction generator. The automatic control system maintained the output voltage at the set level, regardless of the generator load and driving power.https://www.mdpi.com/1996-1073/14/21/7080multiphase cage induction generatormultiphase VSC controlstator supply sequence switchingDC voltage automatic controlwind turbine mechanical characteristics
spellingShingle Piotr Drozdowski
Dariusz Cholewa
Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range
Energies
multiphase cage induction generator
multiphase VSC control
stator supply sequence switching
DC voltage automatic control
wind turbine mechanical characteristics
title Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range
title_full Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range
title_fullStr Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range
title_full_unstemmed Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range
title_short Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range
title_sort voltage control of multiphase cage induction generators at a speed varying over a wide range
topic multiphase cage induction generator
multiphase VSC control
stator supply sequence switching
DC voltage automatic control
wind turbine mechanical characteristics
url https://www.mdpi.com/1996-1073/14/21/7080
work_keys_str_mv AT piotrdrozdowski voltagecontrolofmultiphasecageinductiongeneratorsataspeedvaryingoverawiderange
AT dariuszcholewa voltagecontrolofmultiphasecageinductiongeneratorsataspeedvaryingoverawiderange