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Voltage and frequency regulation of a stand-alone self-excited induction generator with an unregulated prime mover

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Voltage and frequency regulation of a stand-alone self-excited induction generator with an unregulated prime mover

Dastagir, Ghulam (2008) Voltage and frequency regulation of a stand-alone self-excited induction generator with an unregulated prime mover. Masters thesis, Concordia University.

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Abstract

The squirrel-cage induction machine is very attractive for small and medium power generation schemes because of its low cost, robustness and high power density (W/kg). However, the magnitude and the frequency of the generated voltage depend upon the rotor speed, the amount of capacitive excitation, and the load in stand-alone systems with unregulated prime movers. A common approach for providing regulated voltage and frequency to the load is the use of an asynchronous link (ac-dc-ac) power electronic converter. The main disadvantage of this scheme is that the two series connected ac-dc converters have to be rated at least to the rated generator output power. This thesis investigates the use of a single reduced rating ac-dc converter, or voltage source inverter (VSI), connected to the stator of a self-excited induction generator (SEIG) for regulating purposes. Reactive power control is used to regulate the voltage magnitude while active power control, made possible by using a battery bank at the dc side of the VSI, regulates the voltage frequency. An experimental set-up is implemented for the proposed scheme operating with unregulated micro hydro and wind turbines, implemented on a prime mover emulator. The experimental results are in agreement with the simulation results, theoretical analysis and design specifications

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Thesis (Masters)
Authors:Dastagir, Ghulam
Pagination:xviii, 121 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Electrical and Computer Engineering
Date:2008
Thesis Supervisor(s):Lopes, Luiz A. C
ID Code:975637
Deposited By: Concordia University Library
Deposited On:22 Jan 2013 16:12
Last Modified:18 Jan 2018 17:40
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