Impact of voltage unbalance on the performance of three-phase induction motor
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TLDR
The effects of voltage variation and unbalance on the performance of an induction motor driven centrifugal pump with a case study is presented.Abstract:
Availability of quality power has become an important issue for industrial utilities due to frequent performance variations in process industries. Increase in the generating capacity has not kept up pace of power demand, which results into shortage of power supply and power system network is normally subjected to varying and unequal loads across the three phases. Continuous variation of single-phase loads on the power system network leads to voltage variation and unbalance, most importantly; the three-phase voltages tend to become asymmetrical in nature. Application of asymmetrical voltages to induction motor driven systems severely affects its working performance. This paper presents the effects of voltage variation and unbalance on the performance of an induction motor driven centrifugal pump with a case study.read more
Citations
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A Novel Approach Toward Interpretation and Application of Voltage Unbalance Factor
TL;DR: This paper takes the widely used expression of voltage unbalance factor (VUF) and puts forward the various ambiguities that arise due to voltage variation and unbalance when applied to a test case and suggests a simple solution to overcome the same.
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Effect of Voltage and Load Variations on Efficiencies of a Motor-Pump System
TL;DR: In this paper, the experimental results of a three-phase induction motor-pump system subjected to voltage and load variations with a view to justify that knowledge of voltage and loads variations are very much essential for better result analysis.
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References
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Journal ArticleDOI
Method of Symmetrical Co-Ordinates Applied to the Solution of Polyphase Networks
TL;DR: In this article, a general discussion of unsymmetrical systems of co-planar vectors leads to the conclusion that they may be represented by symmetric systems of the same number of vectors, the number of symmetrical systems required to define the given system being equal to its degrees of freedom.
Journal ArticleDOI
Assessment of Voltage Unbalance
A. Jouanne,B. Banerjee +1 more
TL;DR: In this article, the authors present a comprehensive summary of the causes and effects of voltage unbalance and discuss related standards, definitions, and mitigation techniques, as well as the resulting adverse effects on the system and on equipment such as induction motors and power electronic converters and drives.
Journal ArticleDOI
Definitions of voltage unbalance
Pragasen Pillay,M.J. Manyage +1 more
TL;DR: In this article, three different definitions of voltage unbalance have been developed by NEMA, IEEE, and the power community, respectively, in order to understand the implications of their use.
Journal ArticleDOI
Effects of unbalanced voltage on the operation performance of a three-phase induction motor
TL;DR: A real load test is used to investigate the effects of an unbalanced voltage supply on an induction motor's performance and it is strongly suggested that the related regulations, and a motor's derating factor and temperature rise curves should be based on not only a voltage unbalance factor, but also the magnitude of the positive-sequence voltage.
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