NDLI: Influence of non-linear loads on the operation and power flow of induction generators

Content Provider	IEEE Xplore Digital Library
Author	Karugaba, S. Ojo, O. Balogun, A.
Copyright Year	2009
Description	Author affiliation: Department of Electrical and Computer Engineering/Center for Energy Systems Research Tennessee Technological University, Cookeville, TN 3805, U.S.A. (Karugaba, S.; Ojo, O.) \|\| Department of Electrical Engineering, University of Lagos, Nigeria (Balogun, A.)
Abstract	This paper considers the analysis and operation of an autonomous three-phase squirrel cage induction generator when it is feeding linear and non-linear loads. The nonlinear load comprises of a static voltage and frequency dependent component and a three-phase diode rectifier supplying a composite load containing constant power, constant current and constant resistance components. The dynamic model of the generator accounts for the effect of the main air-gap flux linkage saturation which with the excitation capacitors determines the steady-state operating points. Extensive simulation results are provided showing the starting transients and loading dynamics of the generator. The inducement of oscillations in the frequency and waveforms of generator variables due to the presence of the three-phase diode rectifier when the generator runs at a constant rotor speed are exemplified. The flows of the real and reactive powers with the rectifier load show that although the average active powers in capacitors and inductances are zero over the switching period of the three-phase diode rectifier, they are non-zero instantaneously and time-varying. Some experimental steady-state characteristics results obtained from an induction generator feeding a rectifier and an ac load are provided.
Starting Page	1127
Ending Page	1134
File Size	1030873
Page Count	8
File Format	PDF
ISBN	9781424442515
DOI	10.1109/IEMDC.2009.5075345
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Load flow Induction generators Rectifiers Diodes Capacitors Steady-state Voltage Frequency dependence Air gaps Couplings
Content Type	Text
Resource Type	Article

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