A unified modulation scheme for three-phase inverter-fed induction motor drives
Thesis (M.Eng.)--Memorial University of Newfoundland, 2001. Engineering and Applied Science Bibliography: leaves 113-117 Variable speed AC motor drives are widely used for industrial applications and a majority of the industrial drives employ induction motors. In most of the drives, variable speed i...
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ftmemorialunivdc:oai:collections.mun.ca:theses3/160181 2023-05-15T17:23:32+02:00 A unified modulation scheme for three-phase inverter-fed induction motor drives Thirugnanasambandamoorthy, Madusudanan, 1976- Memorial University of Newfoundland. Faculty of Engineering and Applied Science 2001 xv, 117 leaves : ill. Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses3/id/160181 eng eng Electronic Theses and Dissertations (11.94 MB) -- http://collections.mun.ca/PDFs/theses/Thirugnanasambandamoorthy_Madusudanan.pdf a1570625 http://collections.mun.ca/cdm/ref/collection/theses3/id/160181 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Modulation (Electronics) Electric motors Induction Text Electronic thesis or dissertation 2001 ftmemorialunivdc 2015-08-06T19:20:24Z Thesis (M.Eng.)--Memorial University of Newfoundland, 2001. Engineering and Applied Science Bibliography: leaves 113-117 Variable speed AC motor drives are widely used for industrial applications and a majority of the industrial drives employ induction motors. In most of the drives, variable speed is achieved by V/f control strategy, where the air-gap flux in the motor can be maintained constant at all frequencies. The V/f control can be achieved by various modulation schemes in inverter-fed drives. -- This thesis analyzes the advantages and limitations of the existing modulation schemes for V/f control and presents an improved modulation scheme called the unified modulation scheme (UMS). This scheme combines the advantages of two popular modulation schemes (the delta and sine-PWM modulation schemes), at the same time overcoming their disadvantages. The development, simulation results and experimental implementation of the proposed scheme are presented. Comparison between the different modulation schemes shows the advantages of the unified modulation scheme. -- This thesis also presents simulation results of a SIMULINK implementation of an induction motor dr.ve using the unified modulation scheme. These results are compared with the results of the delta-modulated inverter-fed induction motor drive. The results show that the unified modulation scheme provides improved performance in terms of lower-order harmonic attenuation and sub-harmonic elimination. Finally, a modified unified modulation scheme is presented using the conventional sine-PWM scheme, for performance enhancement. Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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English |
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Modulation (Electronics) Electric motors Induction |
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Modulation (Electronics) Electric motors Induction Thirugnanasambandamoorthy, Madusudanan, 1976- A unified modulation scheme for three-phase inverter-fed induction motor drives |
topic_facet |
Modulation (Electronics) Electric motors Induction |
description |
Thesis (M.Eng.)--Memorial University of Newfoundland, 2001. Engineering and Applied Science Bibliography: leaves 113-117 Variable speed AC motor drives are widely used for industrial applications and a majority of the industrial drives employ induction motors. In most of the drives, variable speed is achieved by V/f control strategy, where the air-gap flux in the motor can be maintained constant at all frequencies. The V/f control can be achieved by various modulation schemes in inverter-fed drives. -- This thesis analyzes the advantages and limitations of the existing modulation schemes for V/f control and presents an improved modulation scheme called the unified modulation scheme (UMS). This scheme combines the advantages of two popular modulation schemes (the delta and sine-PWM modulation schemes), at the same time overcoming their disadvantages. The development, simulation results and experimental implementation of the proposed scheme are presented. Comparison between the different modulation schemes shows the advantages of the unified modulation scheme. -- This thesis also presents simulation results of a SIMULINK implementation of an induction motor dr.ve using the unified modulation scheme. These results are compared with the results of the delta-modulated inverter-fed induction motor drive. The results show that the unified modulation scheme provides improved performance in terms of lower-order harmonic attenuation and sub-harmonic elimination. Finally, a modified unified modulation scheme is presented using the conventional sine-PWM scheme, for performance enhancement. |
author2 |
Memorial University of Newfoundland. Faculty of Engineering and Applied Science |
format |
Thesis |
author |
Thirugnanasambandamoorthy, Madusudanan, 1976- |
author_facet |
Thirugnanasambandamoorthy, Madusudanan, 1976- |
author_sort |
Thirugnanasambandamoorthy, Madusudanan, 1976- |
title |
A unified modulation scheme for three-phase inverter-fed induction motor drives |
title_short |
A unified modulation scheme for three-phase inverter-fed induction motor drives |
title_full |
A unified modulation scheme for three-phase inverter-fed induction motor drives |
title_fullStr |
A unified modulation scheme for three-phase inverter-fed induction motor drives |
title_full_unstemmed |
A unified modulation scheme for three-phase inverter-fed induction motor drives |
title_sort |
unified modulation scheme for three-phase inverter-fed induction motor drives |
publishDate |
2001 |
url |
http://collections.mun.ca/cdm/ref/collection/theses3/id/160181 |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (11.94 MB) -- http://collections.mun.ca/PDFs/theses/Thirugnanasambandamoorthy_Madusudanan.pdf a1570625 http://collections.mun.ca/cdm/ref/collection/theses3/id/160181 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
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1766113161712238592 |