2008 11th International Conference on Optimization of Electrical and Electronic Equipment, 2008
A computational investigation was carried out in a contactless electromagnetic induction flowmete... more A computational investigation was carried out in a contactless electromagnetic induction flowmeter to measure the velocity of molten aluminum flowing though a ceramic duct. This paper includes the simulation and the experimental validation using as a reference the electromagnetic induction flowmeter and the experimental test. The results make it possible to demonstrate the reliability of the simulation of the electromagnetic
ABSTRACT This paper presents the results of an ongoing investigation focused on the development o... more ABSTRACT This paper presents the results of an ongoing investigation focused on the development of an expert system for condition monitoring of induction motors fed by Voltage Source Inverters (VSIs), extrapolating a previously successfully proven method suited for utility supply. However, when trying to obtain a generic method valid for any type of converter and at any operating frequencies further considerations have to be made. A controlled laboratory experiment has been performed in which a great deal of tests was carried out progressively drilling a hole in one of the rotor bars of an induction motor. A statistical analysis of the results is presented in detail and some conclusions useful for condition monitoring are drawn.
2012 XXth International Conference on Electrical Machines, 2012
ABSTRACT The induction motor is the most widely used in industry, covering approximately 85% of t... more ABSTRACT The induction motor is the most widely used in industry, covering approximately 85% of the total electric loads. As an unpredicted shutdown can be very costly, early detection and diagnosis of electric motors faults yields to economical losses reduction and operational efficiency improvement. Neural networks have been proposed to solve the induction motor broken bar detection and diagnosis problem. Current spectrum data are generally used but some statistical features of time domain data have also been considered. In this paper, a performance comparison of both types of incoming data for the neural network is accomplished.
Proceedings - 2013 9th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, SDEMPED 2013, 2013
ABSTRACT Condition monitoring has become necessary to detect failures in induction motors (IM) wh... more ABSTRACT Condition monitoring has become necessary to detect failures in induction motors (IM) where the detection of incipient faults is of great concern. However, the detection of partially-broken rotor bars at an early stage is not so easily achieved. Therefore, it is necessary to use suitable condition monitoring accompanied with signal processing techniques to detect partially-broken rotor bar. This paper presents a comparative study of various condition monitoring methods accomplished for IM with the aim of early detection of one partially-broken rotor bar by steady-state current spectrum analysis and different supply conditions, such as two different variable speed drives providing three fundamental supply frequencies, and the line supply case. The study includes three different load conditions for each case. Results show that the most accurate and robust analysis methodology for early detection of broken rotor bars under different supply conditions, fundamental supply frequencies and load conditions during steady-state analysis, are the subspace methods.
... D. Moriñigo-Sotelo is also with the Light Alloys Division, CIDAUT Foundation, 47151 Valladoli... more ... D. Moriñigo-Sotelo is also with the Light Alloys Division, CIDAUT Foundation, 47151 Valladolid, Spain. (e-mails: morinigo@eis.uva.es, duque@eis.uva.es) ... 54, pp. 1410-1419, 2007. [11] D.Morinigo-Sotelo, LA Garcia-Escudero, O. Duque-Perez, and Marcelo Perez-Alonso ...
2008 11th International Conference on Optimization of Electrical and Electronic Equipment, 2008
A computational and experimental investigation was carried out in an electromagnetically stirred ... more A computational and experimental investigation was carried out in an electromagnetically stirred molten aluminum. The molten metal was contained in a cylindrical vessel made of stainless steel. The vessel was positioned in front of a linear induction machine. The free-surface deformation was calculated using numerical simulation with ANSYS and FLUENT and was compared to experimental observations made on a laboratory-scale
In this paper a method for the optimization of the restoration tasks after a failure in an electr... more In this paper a method for the optimization of the restoration tasks after a failure in an electric distribution network is developed. Fast restoration strategies are necessary to reduce the inconvenience to the user during supply interruptions. A tabu search based metaheuristic technique to compute the time needed for load restoration has been implemented. It considers multiple objectives, such as
8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives, 2011
) Abstract - With the aim of developing an expert system for condition monitoring of cage rotor i... more ) Abstract - With the aim of developing an expert system for condition monitoring of cage rotor induction motors fed by power inverters, laboratory tests have been performed on a motor with artificially created eccentricity in order to identify as many fault signatures as possible. The technique used to detect faults is Motor Current Signature Analysis and in this paper
2011 International Conference on Power Engineering, Energy and Electrical Drives, 2011
In this paper, we present a work in progress about the development of an expert system to detect ... more In this paper, we present a work in progress about the development of an expert system to detect incipient faults related to asymmetries in the rotor cage in induction motors fed by Voltage Source Inverters. The expert system is based on a condition monitoring technique based on robust statistical tools, and it makes use of the Fast Fourier Transform to
The following topics were dealt with: focal plane arrays; evolutionary algorithms; virtual enviro... more The following topics were dealt with: focal plane arrays; evolutionary algorithms; virtual environments; networking and business; circuits; sensors; transducers; power; MEMS; high-level synthesis; electric machines; radio communication; VLSI; metamaterials; six-port technology; signal processing; Internet; energy sources; antennas; RF circuits; security; reconfigurable architecture; radio resource management; control
An experimental and computational investigation was carried out on an electromagnetic pump for mo... more An experimental and computational investigation was carried out on an electromagnetic pump for molten aluminum. The electromagnetic pump is a MHD device to drive molten metals by means of electromagnetic fields and without mechanical parts in contact with the metal at high temperature. An exact computer simulation of the electromagnetic pump would require the simultaneous solution of electromagnetic and fluid
The XIX International Conference on Electrical Machines - ICEM 2010, 2010
ΦAbstract -- Bearing lubrication is very important to ensure a satisfactory and long operation of... more ΦAbstract -- Bearing lubrication is very important to ensure a satisfactory and long operation of bearings. An excess of lubrication can be as damaging as a lack of lubrication. An excess of oil or grease has damaging effects in the short term such as difficult heat evacuation, ...
2008 18th International Conference on Electrical Machines, 2008
Abstract In this paper, we advance results of an ongoing investigation related with the detection... more Abstract In this paper, we advance results of an ongoing investigation related with the detection of static and dynamic eccentricity in cage induction motors fed by frequency converter using line current spectral analysis. A statistical analysis of the results obtained ...
2011 International Conference on Power Engineering, Energy and Electrical Drives, 2011
Electrical monitoring is currently considered as a standard in preventive maintenance and is the ... more Electrical monitoring is currently considered as a standard in preventive maintenance and is the reference method for the diagnosis of medium-large machines, standing out the technique known as motor current signature analysis. Numerous successful line-driven motor fault detection methods are reported in the literature. However, inverter-fed motor systems and utility driven motors with high harmonic content still require more attention.
2008 11th International Conference on Optimization of Electrical and Electronic Equipment, 2008
A computational investigation was carried out in a contactless electromagnetic induction flowmete... more A computational investigation was carried out in a contactless electromagnetic induction flowmeter to measure the velocity of molten aluminum flowing though a ceramic duct. This paper includes the simulation and the experimental validation using as a reference the electromagnetic induction flowmeter and the experimental test. The results make it possible to demonstrate the reliability of the simulation of the electromagnetic
ABSTRACT This paper presents the results of an ongoing investigation focused on the development o... more ABSTRACT This paper presents the results of an ongoing investigation focused on the development of an expert system for condition monitoring of induction motors fed by Voltage Source Inverters (VSIs), extrapolating a previously successfully proven method suited for utility supply. However, when trying to obtain a generic method valid for any type of converter and at any operating frequencies further considerations have to be made. A controlled laboratory experiment has been performed in which a great deal of tests was carried out progressively drilling a hole in one of the rotor bars of an induction motor. A statistical analysis of the results is presented in detail and some conclusions useful for condition monitoring are drawn.
2012 XXth International Conference on Electrical Machines, 2012
ABSTRACT The induction motor is the most widely used in industry, covering approximately 85% of t... more ABSTRACT The induction motor is the most widely used in industry, covering approximately 85% of the total electric loads. As an unpredicted shutdown can be very costly, early detection and diagnosis of electric motors faults yields to economical losses reduction and operational efficiency improvement. Neural networks have been proposed to solve the induction motor broken bar detection and diagnosis problem. Current spectrum data are generally used but some statistical features of time domain data have also been considered. In this paper, a performance comparison of both types of incoming data for the neural network is accomplished.
Proceedings - 2013 9th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, SDEMPED 2013, 2013
ABSTRACT Condition monitoring has become necessary to detect failures in induction motors (IM) wh... more ABSTRACT Condition monitoring has become necessary to detect failures in induction motors (IM) where the detection of incipient faults is of great concern. However, the detection of partially-broken rotor bars at an early stage is not so easily achieved. Therefore, it is necessary to use suitable condition monitoring accompanied with signal processing techniques to detect partially-broken rotor bar. This paper presents a comparative study of various condition monitoring methods accomplished for IM with the aim of early detection of one partially-broken rotor bar by steady-state current spectrum analysis and different supply conditions, such as two different variable speed drives providing three fundamental supply frequencies, and the line supply case. The study includes three different load conditions for each case. Results show that the most accurate and robust analysis methodology for early detection of broken rotor bars under different supply conditions, fundamental supply frequencies and load conditions during steady-state analysis, are the subspace methods.
... D. Moriñigo-Sotelo is also with the Light Alloys Division, CIDAUT Foundation, 47151 Valladoli... more ... D. Moriñigo-Sotelo is also with the Light Alloys Division, CIDAUT Foundation, 47151 Valladolid, Spain. (e-mails: morinigo@eis.uva.es, duque@eis.uva.es) ... 54, pp. 1410-1419, 2007. [11] D.Morinigo-Sotelo, LA Garcia-Escudero, O. Duque-Perez, and Marcelo Perez-Alonso ...
2008 11th International Conference on Optimization of Electrical and Electronic Equipment, 2008
A computational and experimental investigation was carried out in an electromagnetically stirred ... more A computational and experimental investigation was carried out in an electromagnetically stirred molten aluminum. The molten metal was contained in a cylindrical vessel made of stainless steel. The vessel was positioned in front of a linear induction machine. The free-surface deformation was calculated using numerical simulation with ANSYS and FLUENT and was compared to experimental observations made on a laboratory-scale
In this paper a method for the optimization of the restoration tasks after a failure in an electr... more In this paper a method for the optimization of the restoration tasks after a failure in an electric distribution network is developed. Fast restoration strategies are necessary to reduce the inconvenience to the user during supply interruptions. A tabu search based metaheuristic technique to compute the time needed for load restoration has been implemented. It considers multiple objectives, such as
8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives, 2011
) Abstract - With the aim of developing an expert system for condition monitoring of cage rotor i... more ) Abstract - With the aim of developing an expert system for condition monitoring of cage rotor induction motors fed by power inverters, laboratory tests have been performed on a motor with artificially created eccentricity in order to identify as many fault signatures as possible. The technique used to detect faults is Motor Current Signature Analysis and in this paper
2011 International Conference on Power Engineering, Energy and Electrical Drives, 2011
In this paper, we present a work in progress about the development of an expert system to detect ... more In this paper, we present a work in progress about the development of an expert system to detect incipient faults related to asymmetries in the rotor cage in induction motors fed by Voltage Source Inverters. The expert system is based on a condition monitoring technique based on robust statistical tools, and it makes use of the Fast Fourier Transform to
The following topics were dealt with: focal plane arrays; evolutionary algorithms; virtual enviro... more The following topics were dealt with: focal plane arrays; evolutionary algorithms; virtual environments; networking and business; circuits; sensors; transducers; power; MEMS; high-level synthesis; electric machines; radio communication; VLSI; metamaterials; six-port technology; signal processing; Internet; energy sources; antennas; RF circuits; security; reconfigurable architecture; radio resource management; control
An experimental and computational investigation was carried out on an electromagnetic pump for mo... more An experimental and computational investigation was carried out on an electromagnetic pump for molten aluminum. The electromagnetic pump is a MHD device to drive molten metals by means of electromagnetic fields and without mechanical parts in contact with the metal at high temperature. An exact computer simulation of the electromagnetic pump would require the simultaneous solution of electromagnetic and fluid
The XIX International Conference on Electrical Machines - ICEM 2010, 2010
ΦAbstract -- Bearing lubrication is very important to ensure a satisfactory and long operation of... more ΦAbstract -- Bearing lubrication is very important to ensure a satisfactory and long operation of bearings. An excess of lubrication can be as damaging as a lack of lubrication. An excess of oil or grease has damaging effects in the short term such as difficult heat evacuation, ...
2008 18th International Conference on Electrical Machines, 2008
Abstract In this paper, we advance results of an ongoing investigation related with the detection... more Abstract In this paper, we advance results of an ongoing investigation related with the detection of static and dynamic eccentricity in cage induction motors fed by frequency converter using line current spectral analysis. A statistical analysis of the results obtained ...
2011 International Conference on Power Engineering, Energy and Electrical Drives, 2011
Electrical monitoring is currently considered as a standard in preventive maintenance and is the ... more Electrical monitoring is currently considered as a standard in preventive maintenance and is the reference method for the diagnosis of medium-large machines, standing out the technique known as motor current signature analysis. Numerous successful line-driven motor fault detection methods are reported in the literature. However, inverter-fed motor systems and utility driven motors with high harmonic content still require more attention.
Uploads
Papers by Daniel Morinigo-Sotelo