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UBC Theses and Dissertations
Phase-domain synchronous generator model for transients simulation Louie, Kwok Wai
Abstract
Three-phase synchronous generators which convert mechanical energy into electrical energy are the main power sources of power systems. In this thesis a phase-domain synchronous generator model which is developed directly in the stator reference frame is presented. The electrical and mechanical parts of a three-phase synchronous generator are separately modeled by two different, sets of differential equations which are discretized with the trapezoidal rule of integration. These two parts are linked together by the rotor position angle and the electromagnetic torque generated by the interactions of the different magnetic fields, resulting in a linear generator model. In order to represent the generator more accurately, the linear generator model is modified to include magnetic saturation effects, resulting in a non-linear generator model. A formula is developed to account for the saturation as a function of the rotor angle and the total magnetomotive force angle. The machine parameters in the stator reference frame are obtained from the given characteristic quantities by a suitable data conversion scheme. To verify the linear generator model, a comparison between the simulation results of a three-phase short-circuit at the terminals of the machine obtained with the new linear model and the model in the EMTP is conducted.
Item Metadata
Title |
Phase-domain synchronous generator model for transients simulation
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1995
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Description |
Three-phase synchronous generators which convert mechanical energy into electrical
energy are the main power sources of power systems. In this thesis a phase-domain synchronous
generator model which is developed directly in the stator reference frame is presented.
The electrical and mechanical parts of a three-phase synchronous generator are
separately modeled by two different, sets of differential equations which are discretized
with the trapezoidal rule of integration. These two parts are linked together by the rotor
position angle and the electromagnetic torque generated by the interactions of the different
magnetic fields, resulting in a linear generator model. In order to represent the generator
more accurately, the linear generator model is modified to include magnetic saturation effects,
resulting in a non-linear generator model. A formula is developed to account for the
saturation as a function of the rotor angle and the total magnetomotive force angle. The
machine parameters in the stator reference frame are obtained from the given characteristic
quantities by a suitable data conversion scheme. To verify the linear generator model, a
comparison between the simulation results of a three-phase short-circuit at the terminals of
the machine obtained with the new linear model and the model in the EMTP is conducted.
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Extent |
2597532 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-01-15
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0065143
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1995-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.