Motor Current Signature Analysis for Speed EstimationAuthor : Renjini E. Nambiar, Sruthi Damodaran and Jeanmary Jose
Volume 8 No.1 Special Issue:June 2019 pp 29-32
The induction motors are widely applied due to their low price and ruggedness. There are several methods for speed estimation in the literature. The optical tachometer is an expensive and less reliable method for the speed measurement. Hence sensor less method for speed estimation is an important topic of research. In this paper, speed estimation of induction motor using motor current signature analysis is done. The comparative study of different methods shows that the motor current signature analysis (MCSA) is more accurate in speed estimation. This technique is experimentally verified on a 5HP, 3.7kW, 1430rpm 415V, 50Hz, 7.5A, 3Ø squirrel cage induction motor using LabVIEW. The experimental and simulation results show that the overall speed estimation error is within 5 rpm.
Induction Motor, Motor Current Signature Analysis
 T. Phumiphak, and C. Chat-uthai, “An Economical Method for Induction Motor Field Efficiency Estimation for Use in On-site Energy Audit and Management”, in Proc. Int. Conf. on Power System Technology, Power-Con 2004, Singapore, pp. 1-5, Nov. 2004.
 J. S. Hsu, J. D. Kueck, M. Olszewski, D. A. Casada, P. J. Otaduy, and L.M. Tolbert, “Comparison of induction motor field efficiency evaluation methods”, IEEE Transactions on Industry Appli., Vol. 34, No. 1, pp. 117-125, Jan./Feb. 1998.
 A. Ferrah, K. J. Bradley, and G.M. Asher, “An FFT-Based Novel Approach to Noninvasive Speed Measurement in Induction Motor Drives”, IEEE Trans. on Instrumentation and Measurement, Vol. 41, No. 6, pp. 797-802, Dec. 1992.
 P. Pillay, and Z. Xu, “Motor Current Signature Analysis”, Industry Applications Conference, Vol. 1, pp. 587-594, Oct. 1996.
 H. D. Haynes, “Application of signature analysis for determining the operational readiness of motor operated valves under blowdown test condition”, Nuclear Engineering and design, Vol. 1, No. 18, pp 399-408, 1990.
 R. C. Kryter, and H. D. Haynes, “Condition monitoring of machinery using motor current signature analysis”, Sound and vibration, pp 14-21, 1989.
 Zibai Xu, “On Line speed estimation of induction motors”, M.S. Thesis., Univ. of New Orleans, 1995.
 Holtz J, “Speed estimation and sensor less control of AC drives”, Proc.19th Intl. conf. on Ind. Elec., pp. 649-654, Nov 1993.
 S. Sangwongwanich, S. Doki, T. Furu-hashi, and S. Okuma, “Adaptive sliding mode observers for induction motor control”, Trans. Soc. Instrum. Contr. Eng., Vol. 27, No. 5, pp. 569-576, May 1991.
 V. A. Bondarko, and A. T. Zaremba, “Speed and flux estimation for an induction motor without position sensor”, Proc. Amer. Contr. Conf., San Diego, Califonia, America, pp. 3890-3894, 1999.