dc.contributor.advisor |
Enslin, NC de V |
en_ZA |
dc.contributor.author |
Schauder, Colin David
|
en_ZA |
dc.date.accessioned |
2016-03-21T19:03:17Z |
|
dc.date.available |
2016-03-21T19:03:17Z |
|
dc.date.issued |
1978 |
en_ZA |
dc.identifier.citation |
Schauder, C. 1978. Induction motors with modulated terminal voltage. University of Cape Town. |
en_ZA |
dc.identifier.uri |
http://hdl.handle.net/11427/18018
|
|
dc.description |
Bibliography: pages 292-294. |
en_ZA |
dc.description.abstract |
Following the development of high speed solid state switches for the forced commutation of current in AC power circuits it has become feasible to apply forced commutation techniques to the frequency and voltage control of induction motors as variable speed drives. The availability of these methods raises questions regarding their effect on the performance of the motor and the generation of harmonic currents in the electrical supply. After the initial use of numerical simulation in the study of these systems it became apparent that this approach was not suitable for the evaluation of steady state performance factors. This thesis sets out to establish an analysis of the induction motor under these conditions which leads to the algebraic formulation of the performance of the system in the steady state. This approach can be used in any situation where the electrical supply to an induction motor is modulated by switching techniques. The analysis has been applied to chopper modulation of the supply voltage and also to a phase-stepping frequency convertor which incorporates chopper modulation. Experimental results are included to illustrate the validity of the analytical method. |
en_ZA |
dc.language.iso |
eng |
en_ZA |
dc.subject.other |
Electrical Engineering |
en_ZA |
dc.subject.other |
Electronic and Electrotechnical Engineering |
en_ZA |
dc.title |
Induction motors with modulated terminal voltage |
en_ZA |
dc.type |
Doctoral Thesis |
|
uct.type.publication |
Research |
en_ZA |
uct.type.resource |
Thesis
|
en_ZA |
dc.publisher.institution |
University of Cape Town |
|
dc.publisher.faculty |
Faculty of Engineering and the Built Environment |
|
dc.publisher.department |
Department of Electrical Engineering |
en_ZA |
dc.type.qualificationlevel |
Doctoral |
|
dc.type.qualificationname |
PhD |
en_ZA |
uct.type.filetype |
Text |
|
uct.type.filetype |
Image |
|
dc.identifier.apacitation |
Schauder, C. D. (1978). <i>Induction motors with modulated terminal voltage</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/18018 |
en_ZA |
dc.identifier.chicagocitation |
Schauder, Colin David. <i>"Induction motors with modulated terminal voltage."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1978. http://hdl.handle.net/11427/18018 |
en_ZA |
dc.identifier.vancouvercitation |
Schauder CD. Induction motors with modulated terminal voltage. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1978 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18018 |
en_ZA |
dc.identifier.ris |
TY - Thesis / Dissertation
AU - Schauder, Colin David
AB - Following the development of high speed solid state switches for the forced commutation of current in AC power circuits it has become feasible to apply forced commutation techniques to the frequency and voltage control of induction motors as variable speed drives. The availability of these methods raises questions regarding their effect on the performance of the motor and the generation of harmonic currents in the electrical supply. After the initial use of numerical simulation in the study of these systems it became apparent that this approach was not suitable for the evaluation of steady state performance factors. This thesis sets out to establish an analysis of the induction motor under these conditions which leads to the algebraic formulation of the performance of the system in the steady state. This approach can be used in any situation where the electrical supply to an induction motor is modulated by switching techniques. The analysis has been applied to chopper modulation of the supply voltage and also to a phase-stepping frequency convertor which incorporates chopper modulation. Experimental results are included to illustrate the validity of the analytical method.
DA - 1978
DB - OpenUCT
DP - University of Cape Town
LK - https://open.uct.ac.za
PB - University of Cape Town
PY - 1978
T1 - Induction motors with modulated terminal voltage
TI - Induction motors with modulated terminal voltage
UR - http://hdl.handle.net/11427/18018
ER -
|
en_ZA |