Open and short circuit behavior of induction motors

Yu, Luodi; Wong, K.N.

doi:10.1109/pcicon.1989.77896

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…A motor running at a speed lower than the synchronous speed (or rated frequency) is said to be running in motoring mode, while a motor running at a speed higher than the synchronous is operating in generating mode [9]. Once running at steady state, an open circuit, short circuit or changing load will introduce transients into the system which will vary according to the residual flux [10], which will be expanded on in the next section.…”

Section: Steady State Operationmentioning

confidence: 99%

Reclosing transients in standard and premium efficiency induction machines in the presence of voltage unbalance

Gabaraane

Barendse

Khan

2016

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

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Section: Steady State Operationmentioning

confidence: 99%

Reclosing transients in standard and premium efficiency induction machines in the presence of voltage unbalance

Gabaraane

Barendse

Khan

2016

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

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“…As there are no sources to maintain these currents flowing, they will decay in time following an exponential law, ruled by the corresponding time constants [1]. Depending on the number and type of closed circuits, dissimilar phenomena (different current magnitude, duration and wave shape) may exist, producing the well known direct-current (dc), subtransient, transient an steady-state current components or time periods [9], [10]. The four mentioned phenomena have durations that depend on the machine characteristics and external circuit for the three former ones and on the protection system for the last duration phenomena.…”

Section: Introductionmentioning

confidence: 99%

Short-circuit currents supplied for induction generators

Gómez¹,

Nesci²,

Barbero³

2009

IET Conference Publications

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Short circuit current supplied by induction generators is becoming a matter of concern due to the increasing power share. Besides, in spite of that the induction generator operation principle is analogous to the traditional synchronic generator, its excitation and thus short-circuit supply is widely dissimilar. Induction generators are mainly applied to produce electric energy through wind turbines. Several papers showing analytical studies have been published, but just a few experimental results have come out. The present work is carried out mainly experimentally, extending the results by applying simulation software. Experiments using laboratory scale induction generator are presented. Four induction generator excitation types where investigated: remnant magnetism excitation, capacitor excitation, dc rotor excitation, and double feed induction generator. As rarely just one type of excitation is available, combined excitations were also studied. The research shows that induction machine short circuit contribution is closely related to excitation type and that the currently used initial and successive damped values represent an overestimation.

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Distributed generation: Short circuit current supplied for induction generators

Morcos

Gómez

2008

2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America

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Magnitude and duration of the short-circuit current supplied by induction generators is a matter of concern. Induction generators are mainly applied to produce electricity through wind turbines. Several papers showing analytical studies on short-circuit current have been published, but just a few with experimental results. Experimental results of 4 to 10 kW induction generator are presented. Four operating principles were investigated: remnant magnetism excitation, capacitor excitation, dc rotor excitation, and double feed. Short-circuit current supplied by remnant magnetism excited machine is presented, showing restart current after fault cleaning. Current first peak magnitude is ruled by the electromagnetic time constant, but current decaying part depends of electromagnetic and mechanical time constants, which can be estimated through simple tests. Good accuracy between analytical and experimental values is presented. Research shows that induction machine short-circuit contribution is closely related to excitation type and that the used initial and damped values represent an overestimation.

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Open and short circuit behavior of induction motors

Cited by 3 publications

References 7 publications

Reclosing transients in standard and premium efficiency induction machines in the presence of voltage unbalance

Reclosing transients in standard and premium efficiency induction machines in the presence of voltage unbalance

Short-circuit currents supplied for induction generators

Distributed generation: Short circuit current supplied for induction generators

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