Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292789
J. Urresty, J. Riba, L. Romeral, J. Rosero, J. Serna
This paper presents and analyzed short circuit failures for Permanent Magnet Synchronous Motor (PMSM). The study includes stated state and dynamic condition for experimental test. The stator current is analyzed by means of Hilbert-Huang transform (HHT) and energy spectrum.
{"title":"Stator short circuits detection in PMSM by means of Hilbert-Huang transform and energy calculation","authors":"J. Urresty, J. Riba, L. Romeral, J. Rosero, J. Serna","doi":"10.1109/DEMPED.2009.5292789","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292789","url":null,"abstract":"This paper presents and analyzed short circuit failures for Permanent Magnet Synchronous Motor (PMSM). The study includes stated state and dynamic condition for experimental test. The stator current is analyzed by means of Hilbert-Huang transform (HHT) and energy spectrum.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133405655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292781
Y. Aksenov, I. Yaroshenko, G. Noe, A. V. Andreev, I. Arces
Condition-based maintenance for turbine generators (TG) is given in the paper. Defects in stator winding and in magnet core are determined before repair on the basis of double-coordinate on-line discharge events location. Full information about ground wall semiconductivity layer in bars, slot discharges, sparking between plates in magnet core are provided by generators measurements operating load from Wmin. to Wmax. Defect diagnostics have affirmed the forecasted failures: 1) migrating iron particles were detected through location and were registered protractedly by in-service installed continuum monitoring system for TG; 2) sparking in core located; 3) partial discharges (PD) located; 4) slot discharges located. The quality of the repair work has been monitored by the double-coordinate location and operating load variation, tests have confirmed defect absence.
{"title":"Pattern analysis of turbine generators on-line discharge zone location in winding","authors":"Y. Aksenov, I. Yaroshenko, G. Noe, A. V. Andreev, I. Arces","doi":"10.1109/DEMPED.2009.5292781","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292781","url":null,"abstract":"Condition-based maintenance for turbine generators (TG) is given in the paper. Defects in stator winding and in magnet core are determined before repair on the basis of double-coordinate on-line discharge events location. Full information about ground wall semiconductivity layer in bars, slot discharges, sparking between plates in magnet core are provided by generators measurements operating load from Wmin. to Wmax. Defect diagnostics have affirmed the forecasted failures: 1) migrating iron particles were detected through location and were registered protractedly by in-service installed continuum monitoring system for TG; 2) sparking in core located; 3) partial discharges (PD) located; 4) slot discharges located. The quality of the repair work has been monitored by the double-coordinate location and operating load variation, tests have confirmed defect absence.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129766394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292776
V. Dinkhauser, F. Fuchs
Detection of defects or beginning faults is a way to be able to prevent catastrophic faults. Here asymmetrical states of a doubly-fed induction machine, as for example a turn-to-turn fault, are modeled and simulated in state space with hybrid machine equations. These equations are reduced in order of less computation effort. To detect rotor turn-to-turn faults of the doubly-fed induction machine a Luenberger observer is developed and investigated by simulation. The results show a sensitive and fast detection of the fault.
{"title":"Rotor turn-to-turn fault detection in doubly-fed induction machines by means of state space modeling and Luenberger observer","authors":"V. Dinkhauser, F. Fuchs","doi":"10.1109/DEMPED.2009.5292776","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292776","url":null,"abstract":"Detection of defects or beginning faults is a way to be able to prevent catastrophic faults. Here asymmetrical states of a doubly-fed induction machine, as for example a turn-to-turn fault, are modeled and simulated in state space with hybrid machine equations. These equations are reduced in order of less computation effort. To detect rotor turn-to-turn faults of the doubly-fed induction machine a Luenberger observer is developed and investigated by simulation. The results show a sensitive and fast detection of the fault.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116994940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292786
V. Climente-Alarcón, J. Antonino-Daviu, M. Riera, R. Puche-Panadero, L. A. Escobar
The diagnosis of rotor asymmetries in induction machines through the use of methods based on the study of the startup current has become an issue of special interest. These techniques may provide, in certain situations (unbalance supply voltages, load torque oscillations…), substantial advantages in comparison with the classical method, based on the Fourier spectrum of the steady-state current. Nevertheless, these transient-based techniques have been mainly focused on the tracing of the left sideband harmonics (LSH) introduced by the asymmetry. In this paper, Wigner-Ville distributions are applied to the detection of other high-order components introduced by the asymmetry. Their detection might help to reach a more reliable diagnosis conclusion in cases in which the tracing of the LSH may be difficult (inter-bar currents, load torque oscillations…). The results show the potential of the tool for the detection of these components as a basis to diagnose the fault.
{"title":"Wigner-Ville distribution for the detection of high-order harmonics due to rotor asymmetries","authors":"V. Climente-Alarcón, J. Antonino-Daviu, M. Riera, R. Puche-Panadero, L. A. Escobar","doi":"10.1109/DEMPED.2009.5292786","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292786","url":null,"abstract":"The diagnosis of rotor asymmetries in induction machines through the use of methods based on the study of the startup current has become an issue of special interest. These techniques may provide, in certain situations (unbalance supply voltages, load torque oscillations…), substantial advantages in comparison with the classical method, based on the Fourier spectrum of the steady-state current. Nevertheless, these transient-based techniques have been mainly focused on the tracing of the left sideband harmonics (LSH) introduced by the asymmetry. In this paper, Wigner-Ville distributions are applied to the detection of other high-order components introduced by the asymmetry. Their detection might help to reach a more reliable diagnosis conclusion in cases in which the tracing of the LSH may be difficult (inter-bar currents, load torque oscillations…). The results show the potential of the tool for the detection of these components as a basis to diagnose the fault.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121825419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292761
C. Concari, G. Franceschini, C. Tassoni
Different automatic procedures to estimate induction machines parameters, known as self-commissioning, can be found in literature. They usually involve supplying a single phase or two series-connected phases. An ideal machine should present the same behavior at all terminals, while in an actual machine non-idealities alter the response to the signals. Some techniques to state machine condition during self-commission procedures based on the parameter values discrepancies or on the response to particular signals injected have been proposed. This paper investigates the effect of the different asymmetries on the usual self-commissioning procedures and the further possibilities given by the machine supply through the digitally controlled inverter. It is shown that, even at standstill, it is possible to detect and state the severity of some fault conditions of the machine. In particular a specific supply voltage signal is proposed that, through the machine response, outlines the machine rotor conditions.
{"title":"Self-commissioning procedures to detect parameters in healthy and faulty induction drives","authors":"C. Concari, G. Franceschini, C. Tassoni","doi":"10.1109/DEMPED.2009.5292761","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292761","url":null,"abstract":"Different automatic procedures to estimate induction machines parameters, known as self-commissioning, can be found in literature. They usually involve supplying a single phase or two series-connected phases. An ideal machine should present the same behavior at all terminals, while in an actual machine non-idealities alter the response to the signals. Some techniques to state machine condition during self-commission procedures based on the parameter values discrepancies or on the response to particular signals injected have been proposed. This paper investigates the effect of the different asymmetries on the usual self-commissioning procedures and the further possibilities given by the machine supply through the digitally controlled inverter. It is shown that, even at standstill, it is possible to detect and state the severity of some fault conditions of the machine. In particular a specific supply voltage signal is proposed that, through the machine response, outlines the machine rotor conditions.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126632477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292784
Guillermo R. Bossio, C. D. de Angelo, P. Donolo, A. Castellino, G. García
Effects of voltage unbalance on the induction motors power, torque and vibrations are analyzed in this paper. Voltage unbalance produces power oscillations at twice the supply frequency, which introduces, in turn, torque oscillations and vibrations at this frequency. The dependence of these power oscillations on the unbalance level and motor load is analyzed by simulation. The effects of voltage unbalance on the oscillation of motor power, torque and vibrations are extensively analyzed through experimental results. These experiments are performed for induction motors with different rotor characteristics, showing that the motor behavior under voltage unbalance significantly changes according to the rotor construction.
{"title":"Effects of voltage unbalance on IM power, torque and vibrations","authors":"Guillermo R. Bossio, C. D. de Angelo, P. Donolo, A. Castellino, G. García","doi":"10.1109/DEMPED.2009.5292784","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292784","url":null,"abstract":"Effects of voltage unbalance on the induction motors power, torque and vibrations are analyzed in this paper. Voltage unbalance produces power oscillations at twice the supply frequency, which introduces, in turn, torque oscillations and vibrations at this frequency. The dependence of these power oscillations on the unbalance level and motor load is analyzed by simulation. The effects of voltage unbalance on the oscillation of motor power, torque and vibrations are extensively analyzed through experimental results. These experiments are performed for induction motors with different rotor characteristics, showing that the motor behavior under voltage unbalance significantly changes according to the rotor construction.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131818153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292770
D. Casadei, F. Filippetti, C. Rossi, A. Stefani
Nowadays Permanent Magnet Synchronous Motor (PMSM) are an attractive alternative to induction machines for a variety of applications due to their higher efficiency, power density and wide constant power speed range. In this context the condition monitoring of magnets status is receiving more and more attention since is critical for industrial applications. This paper presents a characterization of rotor faults for such a motor due to local and uniform demagnetization by means of two dimensional (2-D) Finite Element Analysis (FEA) and proposes a new non-invasive method for their detection by means of a Fourier transform of the back-EMF. The proposed approach is then validated for three Permanent Magnet Synchronous Motors with different winding configurations.
{"title":"Magnets faults characterization for Permanent Magnet Synchronous Motors","authors":"D. Casadei, F. Filippetti, C. Rossi, A. Stefani","doi":"10.1109/DEMPED.2009.5292770","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292770","url":null,"abstract":"Nowadays Permanent Magnet Synchronous Motor (PMSM) are an attractive alternative to induction machines for a variety of applications due to their higher efficiency, power density and wide constant power speed range. In this context the condition monitoring of magnets status is receiving more and more attention since is critical for industrial applications. This paper presents a characterization of rotor faults for such a motor due to local and uniform demagnetization by means of two dimensional (2-D) Finite Element Analysis (FEA) and proposes a new non-invasive method for their detection by means of a Fourier transform of the back-EMF. The proposed approach is then validated for three Permanent Magnet Synchronous Motors with different winding configurations.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115646455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292779
Y. Khelil, P. Maussion, T. Lebey
In order to underline the influence of combined operating constraints in insulation reliability, some experiments were carried out according to the experimental design methodology. Kapton films and coated wires were subjected to an accelerated aging under combined stresses (VRMS, frequency, DC voltage, and temperature). Samples life time measurements allowed us classify the parameters with respect to their influence order. Frequency shift from 1 to 10 kHz is more hazardous than a voltage shift from 0.7 to 1.2 kV or a temperature shift from 150 to 200°C. Adding a DC voltage as 200V increased the sample life time. Thanks to experimental design, different mathematical models of sample life time have been established.
{"title":"Experimental designs for tracking the influent operating parameters on insulation reliability","authors":"Y. Khelil, P. Maussion, T. Lebey","doi":"10.1109/DEMPED.2009.5292779","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292779","url":null,"abstract":"In order to underline the influence of combined operating constraints in insulation reliability, some experiments were carried out according to the experimental design methodology. Kapton films and coated wires were subjected to an accelerated aging under combined stresses (VRMS, frequency, DC voltage, and temperature). Samples life time measurements allowed us classify the parameters with respect to their influence order. Frequency shift from 1 to 10 kHz is more hazardous than a voltage shift from 0.7 to 1.2 kV or a temperature shift from 150 to 200°C. Adding a DC voltage as 200V increased the sample life time. Thanks to experimental design, different mathematical models of sample life time have been established.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121809755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292790
M. Nemec, V. Ambrožič, D. Nedeljkovic, R. Fišer, K. Drobnič
The paper presents an application of a rotor broken bars detection method in induction motor drives with Field Oriented Control (FOC). Rotor fault distorts the magnetic symmetry and subsequently deteriorates the steady-state and dynamic performance. As fast speed control loop compensates for the unevenly distribution of the field, the inverter supply voltage is adjusted accordingly. The modulated supply voltage pattern is then analyzed and its average duty cycle is determined. When broken rotor bars are present, specific oscillations in the average duty cycle arise. The presence of these oscillations is sufficient for a successful detection. The computation is performed using simple mathematics and demands no significant computational power. The results confirm the suitability of the proposed detection method for FOC scheme.
{"title":"Detection of broken bars in induction motor using voltage pattern analysis","authors":"M. Nemec, V. Ambrožič, D. Nedeljkovic, R. Fišer, K. Drobnič","doi":"10.1109/DEMPED.2009.5292790","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292790","url":null,"abstract":"The paper presents an application of a rotor broken bars detection method in induction motor drives with Field Oriented Control (FOC). Rotor fault distorts the magnetic symmetry and subsequently deteriorates the steady-state and dynamic performance. As fast speed control loop compensates for the unevenly distribution of the field, the inverter supply voltage is adjusted accordingly. The modulated supply voltage pattern is then analyzed and its average duty cycle is determined. When broken rotor bars are present, specific oscillations in the average duty cycle arise. The presence of these oscillations is sufficient for a successful detection. The computation is performed using simple mathematics and demands no significant computational power. The results confirm the suitability of the proposed detection method for FOC scheme.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123135696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-10-23DOI: 10.1109/DEMPED.2009.5292771
Y. Aksenov, I. Yaroshenko, G. Noe, A. V. Andreev
This paper contains summary information on Diagnostic Technology Principles including proactive maintenance strategy which comprises the following sections: motors on-line testing and defects location procedure; on-line diagnostic technology and data analysis; examples of test results, sensor installation in detail, and example of technical report. The Benefits of on-line diagnostics are as follows: determine — non-destructively — the probable extent of deterioration in service-aged medium voltage motors, pinpoint the location of deterioration, determine which motors and cables are likely to experience failure in the foreseeable future, decide whether wholesale replacement of motor and cable is required, or just certain sections, postpone motor maintenance and postpone cost of replacement.
{"title":"On-line diagnostics technology and repair results for medium voltage motors","authors":"Y. Aksenov, I. Yaroshenko, G. Noe, A. V. Andreev","doi":"10.1109/DEMPED.2009.5292771","DOIUrl":"https://doi.org/10.1109/DEMPED.2009.5292771","url":null,"abstract":"This paper contains summary information on Diagnostic Technology Principles including proactive maintenance strategy which comprises the following sections: motors on-line testing and defects location procedure; on-line diagnostic technology and data analysis; examples of test results, sensor installation in detail, and example of technical report. The Benefits of on-line diagnostics are as follows: determine — non-destructively — the probable extent of deterioration in service-aged medium voltage motors, pinpoint the location of deterioration, determine which motors and cables are likely to experience failure in the foreseeable future, decide whether wholesale replacement of motor and cable is required, or just certain sections, postpone motor maintenance and postpone cost of replacement.","PeriodicalId":405777,"journal":{"name":"2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128066356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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