1. P. Pillay and K. A. Fendley "The contribution of energy efficient motors to demand and energy savings in the petrochemical industry", IEEE Trans. Power Syst., vol. 10, no. 2, pp.1085 -1093 1995 2.Energy conservation requirements for certain commercial and industrial equipment.energy conservation standards for high-intensity discharge lamps, distribution transformers, and small electric motors, [online] Available: http://thomas.loc.gov 3. "DOE Industry Tools", DOE Motor Master + Website, [online] Available: http://www1.eere.energy.gov/industry/bestpractices/software.html 4. C.-Y. Lee , B.-K. Chen , W.-J. Lee and Y.-F. Hsu "Effects of various unbalanced voltages on the operation performance of an induction motor under the same voltage unbalance factor condition", Proc. IEEE Tech. Conf. Ind. Commercial Power Syst., pp.51 -59 1997 5. P. Pillay , P. Hofmann and M. Manyage "Derating of induction motors operating with a combination of unbalanced voltages and over or under voltages", IEEE Trans. Energy Convers., vol. 17, no. 4, pp.485 -491 2002 6. J. D. Kueck , M. Olszewski , D. A. Casada , J. Hsu , P. J. Otaduy and L. M. Tolbert Assessment of methods for estimating motor efficiency, and load under field conditions, 1996 7.In-plant electric motor loading and efficiency techniques, 1990 8. B. Lu , T. G. Habetler and R. G. Harley "A nonintrusive and in-situ motor-efficiency estimation method using air-gap torque with considerations of condition monitoring", IEEE Trans. Ind. Appl., vol. 44, no. 6, pp.1666 -1674 2008 9. P. Pillay , V. Levin , P. Otaduy and J. Kueck "In-situ induction motor efficiency determination using the genetic algorithm", IEEE Trans. Energy Convers., vol. 13, no. 4, pp.326 -333 1998 10. A. Charette , J. Xu , A. Ba-Razzouk , P. Pillay and V. Rajagopalan "The use of the genetic algorithm for in-situ efficiency measurement of an induction motor", Conf. Rec. IEEE Power Eng. Soc. Winter Meeting, pp.392 -397 2000 11. T. Phumiphak and C. Chat-uthai "Estimation of induction motor parameters based on field test coupled with genetic algorithm", Proc. IEEE Int. Conf. Power Syst. Technol., pp.1199 -1203 2002 12. T. Phumiphak and C. Chat-uthai "An economical method for induction motor field efficiency estimation for use in on-site energy audit and management", Proc. IEEE Int. Conf. Power Syst. Technol., pp.1250 -1254 2004 13. B. Lu , C. Wenping , I. French , K. J. Bradley and T. G. Habetler "Non-intrusive efficiency determination of in-situ induction motors using genetic algorithm and air-gap torque methods", Conf. Rec. IEEE 42nd IAS Annu. Meeting, pp.1186 -1192 2007 14. M. S. Aspalli , S. B. Shetagar and S. F. Kodad "Estimation of induction motor field efficiency for energy audit and management using genetic algorithm", Proc. IEEE Int. Conf. Sens. Technol., pp.440 -445 2008 15. P. Phumiphak and C. Chat-uthai "Nonintrusive method for estimating field efficiency of inverter-fed induction motor using measured values", Proc. IEEE Int. Conf. Sustain. Energy Technol., pp.580 -583 2008 16. M. Cunkas and T. Sag "Efficiency determination of induction motors using multi-objective evolutionary algorithms", Elsevier J. Adv. Eng. Softw., vol. 41, no. 2, pp.255 -261 2010 17. A. Siddique and G. S. Yadava "Effects of voltage unbalance on induction motors", Proc. IEEE Int. Symp. Elect. Insul., pp.26 -29 2004 18. C.-Y. Lee "Effects of unbalanced voltage on the operation performance of a three-phase induction motor", IEEE Trans. Energy Convers., vol. 14, no. 2, pp.202 -208 1999 19. J. R. Gomez , E. C. Quispe , M. A. de Armas and P. R. Viego "Estimation of induction motor efficiency in-situ under unbalanced voltages using genetic algorithms", Proc. IEEE Int. Conf. Elect. Mach., pp.1 -4 2008 20. A. K. Ziarani Extraction of non-stationary sinusoids, 2002 21. S. E. Zocholl , E. O. Schweitzer and A. Aliaga-Zegarra "Thermal protection of induction motors enhanced by interactive electrical and thermal models", IEEE Trans. Power App. Syst., vol. PAS-103, no. 7, pp.1749 -1755 1984 22. "IEEE Std. 112-2004", IEEE Standard Test Procedure for Polyphase Induction Motors and Generators, 2004 23. B. W. Williams , J. K. Goodfellow and T. C. Green "Sensorless speed measurement of inverter driven squirrel cage induction motors", Proc. IEEE Int. Conf. Power Electron. Variable-Speed Drives, pp.297 -300 1991 24. B. Lu , C. Wenping and T. G. Habetler "Error analysis of motor-efficiency estimation and measurement", Proc. IEEE PESC, pp.612 -618 2007 25. B. Herndler , P. Barendse and M. A. Khan "Considerations for improving the non-intrusive efficiency estimation of induction machines using the air gap torque method", Proc. IEEE Elect. Mach. Drives Conf., pp.1516 -1521 2011