Comparative analysis between voltage unbalance definitions

This paper describes different standards used to calculate voltage unbalance factor. Currently there are four definitions given from: IEEE (std. 1159 and 141), NEMA, and IEC, to calculate it. Variations of voltages using these 4 different definitions are presented in 3-D coordinates. The graphic relationship between them is analyzed.

[1]  Wei-Jen Lee,et al.  Effects of nonsinusoidal voltage on the operation performance of a three-phase induction motor , 1999 .

[2]  Ching-Yin Lee,et al.  Effects of unbalanced voltage on the operation performance of a three-phase induction motor , 1999 .

[3]  Antonio J. Marques Cardoso,et al.  Influence of the positive sequence voltage on the derating of three-phase induction motors under voltage unbalance , 2013, 2013 International Electric Machines & Drives Conference.

[4]  C. B. Cooper,et al.  IEEE Recommended Practice for Electric Power Distribution for Industrial Plants , 1987 .

[5]  C. B. Cooper,et al.  IEEE Recommended Practice for Electric Power Distribution for Industrial Plants , 1987 .

[6]  M. M. Berndt,et al.  Derating of polyphase induction motors operated with unbalanced line voltages , 1962, Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems.

[7]  Bin-Kwie Chen,et al.  Effects of various unbalanced voltages on the operation performance of an induction motor under the same voltage unbalance factor condition , 1997, 1997 IEEE Industrial and Commercial Power Systems Technical Conference. Conference Record.

[8]  J. Faiz,et al.  Precise derating of three-phase induction motors with unbalanced voltages , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[9]  Pragasen Pillay,et al.  Derating of induction motors operating with a combination of unbalanced voltages and over or undervoltages , 2002 .

[11]  B. Banerjee,et al.  Assessment of Voltage Unbalance , 2001, IEEE Power Engineering Review.