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Smart Sensor for Online Detection of Multiple-Combined Faults in VSD-Fed Induction Motors
HSPdigital-CA Mecatronica, Facultad de Ingenieria, Universidad Autonoma de Queretaro, Campus San Juan del Rio, Rio Moctezuma 249, Col. San Cayetano, San Juan del Rio, Qro. 76807, Mexico
HSPdigital-CA Telematica, DICIS, Universidad de Guanajuato, Carr. Salamanca-Valle km 3.5+1.8, Palo Blanco, Salamanca, Gto. 36885, Mexico
* Author to whom correspondence should be addressed.
Received: 27 July 2012; in revised form: 17 August 2012 / Accepted: 24 August 2012 / Published: 30 August 2012
Abstract: Induction motors fed through variable speed drives (VSD) are widely used in different industrial processes. Nowadays, the industry demands the integration of smart sensors to improve the fault detection in order to reduce cost, maintenance and power consumption. Induction motors can develop one or more faults at the same time that can be produce severe damages. The combined fault identification in induction motors is a demanding task, but it has been rarely considered in spite of being a common situation, because it is difficult to identify two or more faults simultaneously. This work presents a smart sensor for online detection of simple and multiple-combined faults in induction motors fed through a VSD in a wide frequency range covering low frequencies from 3 Hz and high frequencies up to 60 Hz based on a primary sensor being a commercially available current clamp or a hall-effect sensor. The proposed smart sensor implements a methodology based on the fast Fourier transform (FFT), RMS calculation and artificial neural networks (ANN), which are processed online using digital hardware signal processing based on field programmable gate array (FPGA).
Keywords: smart sensor; induction motors; multiple-combined faults; VSD; FPGA
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Garcia-Ramirez, A.G.; Osornio-Rios, R.A.; Granados-Lieberman, D.; Garcia-Perez, A.; Romero-Troncoso, R.J. Smart Sensor for Online Detection of Multiple-Combined Faults in VSD-Fed Induction Motors. Sensors 2012, 12, 11989-12005.
Garcia-Ramirez AG, Osornio-Rios RA, Granados-Lieberman D, Garcia-Perez A, Romero-Troncoso RJ. Smart Sensor for Online Detection of Multiple-Combined Faults in VSD-Fed Induction Motors. Sensors. 2012; 12(9):11989-12005.
Garcia-Ramirez, Armando G.; Osornio-Rios, Roque A.; Granados-Lieberman, David; Garcia-Perez, Arturo; Romero-Troncoso, Rene J. 2012. "Smart Sensor for Online Detection of Multiple-Combined Faults in VSD-Fed Induction Motors." Sensors 12, no. 9: 11989-12005.