Perhitungan Rerating Motor Induksi Akibat Tegangan Tidak Seimbang Dengan Metode William

Darmansyah Darmansyah

Abstract


Three-phase induction motor is one of the electric motor is in operation requires three-phase supply voltage is balanced to operate optimally. Three-phase supply voltages are un balanced can reduce the rating of the three-phase induction motor during operation.
To calculate the rerating three-phase induction motor output due to supply voltage three-phase unbalanced done using the method of William. Unbalanced three-phase voltage obtained by simulation. Simulation is used Monte Carlo simulations to present three-phase induction motor condition with input voltages to the stator is unbalanced using the software MATLAB 7.
The results of calculations show the influence of unbalanced input voltage by a factor of 0.76% voltage imbalance – 8.41% of a three-phase induction motor rating can be seen in the form of a decrease in the power rating of three-phase induction motor 10 hp to 9.45 – 4.03 hp.
Keywords: rerating, Monte Carlo simulation, Method of William

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References


C S Indulkar, Monte Carlo Analysis of a Three-phase Induction Motor for Unbalanced Voltage Supply , IE (I) Journal-EL ,March 2007, vol 87

Kanwarjit Singh Sandhu , Vineet Chaudhary , Steady State Modelling of Induction Motor Operating With Unbalanced Supply System, Wseas Transactions on Circuits And Systems, February 2009, Vol 8

P Pillay, P Hofmann , M Manyage, Derating of Induction Motors Operating with a Combination of Unbalanced Voltages and Over or Undervoltages, IEEE Transactions on Energy Conversion, vol 17, December 2002, pp 485-491.

Texbooks:

BL Theraja, AK Theraja,), Text book of Electrical Technology Revised Edition, S Chand Company, New Delhi, 2002 : pages

C.F,Wagner and RD Evans, Symmetrical Components , RE Krieger Publication , Florida,1933


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