Pub Date : 2019-08-01DOI: 10.1109/DEMPED.2019.8864925
J. Pando-Acedo, A. Rassõlkin, A. Lehikoinen, T. Vaimann, A. Kallaste, E. Romero-Cadaval, A. Belahcen
Nowadays, the research and industry societies showing their interest on permanent magnet assisted synchronous reluctance motors. One of the main disadvantages of using permanent magnets in electrical machines is a risk of demagnetization. This paper discusses a hybrid FEA-Simulink model with damaged permanent magnets in rotor flux barriers. Three sets of interpolation tables were computed using two-dimensional finite element analysis, calculated flux linkages and electromagnetic torque were used for development of Simulink model. Proposed model gives more accurate results in comparing to analytical one. The model opens the possibility of studying the machine under more realistic situations.
{"title":"Hybrid FEA-Simulink Modelling of Permanent Magnet Assisted Synchronous Reluctance Motor with Unbalanced Magnet Flux","authors":"J. Pando-Acedo, A. Rassõlkin, A. Lehikoinen, T. Vaimann, A. Kallaste, E. Romero-Cadaval, A. Belahcen","doi":"10.1109/DEMPED.2019.8864925","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864925","url":null,"abstract":"Nowadays, the research and industry societies showing their interest on permanent magnet assisted synchronous reluctance motors. One of the main disadvantages of using permanent magnets in electrical machines is a risk of demagnetization. This paper discusses a hybrid FEA-Simulink model with damaged permanent magnets in rotor flux barriers. Three sets of interpolation tables were computed using two-dimensional finite element analysis, calculated flux linkages and electromagnetic torque were used for development of Simulink model. Proposed model gives more accurate results in comparing to analytical one. The model opens the possibility of studying the machine under more realistic situations.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114475075","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 : 2019-08-01DOI: 10.1109/DEMPED.2019.8864904
S. Rigal, C. Turpin, A. Jaafar, N. Chadourne, T. Hordé, Jean-Baptiste Jollys
In this work, a commercially available Membrane Electrode Assembly (MEA) from Advent Technology Inc., developed for a use in High Temperature Proton Exchange Membrane Fuel Cell (HT-PEMFC), was tested under various operating conditions (OCs) according to a design of experiments (DOE) with three factors varying on three levels: hydrogen gas over-stoichiometry (1.05, 1.2, 1.35), air gas over-stoichiometry (1.5, 2, 2.5) and temperature (140°C, 160°C, 180°C). A polarization curve (V-I curve) was performed for each set of operating conditions (27 curves in total) by characterizing 22 current levels. A semi-empirical and macroscopic (1D) model of the cell voltage was developed in steady state in order to model these experimental data. The proposed parameterization approach for this model (called here “multi-VI” approach) is based on the sensitivity to the OCs specific to each physicochemical phenomenon involved. With this method, only one set of parameters is used in order to model all the experimental curves (simultaneous optimization with 27 curves). The obtained results are very good: an average error less than 0.8 % and a maximum error around 2.6% between modelled and measured voltages. The obtained parameters appear consistent regardless the OCs. The proposed “multi-VI” approach with only one set of parameters seems to be an interesting way in order to converge towards a uniqueness of consistent parameters.
{"title":"Steady-state modelling of a HT-PEMFC under various operating conditions","authors":"S. Rigal, C. Turpin, A. Jaafar, N. Chadourne, T. Hordé, Jean-Baptiste Jollys","doi":"10.1109/DEMPED.2019.8864904","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864904","url":null,"abstract":"In this work, a commercially available Membrane Electrode Assembly (MEA) from Advent Technology Inc., developed for a use in High Temperature Proton Exchange Membrane Fuel Cell (HT-PEMFC), was tested under various operating conditions (OCs) according to a design of experiments (DOE) with three factors varying on three levels: hydrogen gas over-stoichiometry (1.05, 1.2, 1.35), air gas over-stoichiometry (1.5, 2, 2.5) and temperature (140°C, 160°C, 180°C). A polarization curve (V-I curve) was performed for each set of operating conditions (27 curves in total) by characterizing 22 current levels. A semi-empirical and macroscopic (1D) model of the cell voltage was developed in steady state in order to model these experimental data. The proposed parameterization approach for this model (called here “multi-VI” approach) is based on the sensitivity to the OCs specific to each physicochemical phenomenon involved. With this method, only one set of parameters is used in order to model all the experimental curves (simultaneous optimization with 27 curves). The obtained results are very good: an average error less than 0.8 % and a maximum error around 2.6% between modelled and measured voltages. The obtained parameters appear consistent regardless the OCs. The proposed “multi-VI” approach with only one set of parameters seems to be an interesting way in order to converge towards a uniqueness of consistent parameters.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124272455","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 : 2019-08-01DOI: 10.1109/DEMPED.2019.8864899
A. Khlaief, K. Nguyen, K. Medjaher, A. Picot, P. Maussion, D. Tobon, B. Chauchat, R. Chéron
The non detection of bearing faults in rotating machines can lead to less availability, reliability and safety while increasing the maintenance costs due to unexpected breakdowns and urgent repairing. This paper deals with feature engineering to enhance the performance of an early fault detection and diagnostic of ball bearings of asynchronous electrical motors. The features of different types, ie. time, frequency and time-frequency, are extracted from both current and vibration. Then, they are selected based on a genetic algorithm to continuously capture the health state of the ball bearings. The proposed method is applied on sensor signals acquired from a test bench reproducing a real industrial system. The obtained results show the effectiveness of the method particularly for fault detection and diagnostic using current signals which can be useful in practical applications.
{"title":"Feature Engineering for Ball Bearing Combined-Fault Detection and Diagnostic","authors":"A. Khlaief, K. Nguyen, K. Medjaher, A. Picot, P. Maussion, D. Tobon, B. Chauchat, R. Chéron","doi":"10.1109/DEMPED.2019.8864899","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864899","url":null,"abstract":"The non detection of bearing faults in rotating machines can lead to less availability, reliability and safety while increasing the maintenance costs due to unexpected breakdowns and urgent repairing. This paper deals with feature engineering to enhance the performance of an early fault detection and diagnostic of ball bearings of asynchronous electrical motors. The features of different types, ie. time, frequency and time-frequency, are extracted from both current and vibration. Then, they are selected based on a genetic algorithm to continuously capture the health state of the ball bearings. The proposed method is applied on sensor signals acquired from a test bench reproducing a real industrial system. The obtained results show the effectiveness of the method particularly for fault detection and diagnostic using current signals which can be useful in practical applications.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125427621","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 : 2019-08-01DOI: 10.1109/DEMPED.2019.8864890
Geye Lu, Pinjia Zhang
Converter transformers demand a high standard of insulation design and monitoring due to high frequency electrical stress. Traditional monitoring techniques for power transformers generally suffer from their invasive nature, and may lack sensitivity when applied to converter transformers. Effective and non-invasive insulation monitoring technique is critical for converter transformers. This paper proposes a novel online insulation monitoring technique for converter transformers, which is based on the inherent common-mode characteristic harmonics (CMCH) generated by the power switches. Two transfer functions (TF) are introduced using the measured voltages and currents at the neutral ends. Insulation ageing condition can be evaluated according to the performances of two TFs at the characteristic frequencies. Theoretical analysis, model simulation and experimental results are presented to validate the proposed technique. The importance of the proposed technique lies in its non-invasiveness and simple implementation.
{"title":"A Novel Insulation Monitoring Technique for Converter Transformers using Common-Mode Characteristic Harmonics of VSCs","authors":"Geye Lu, Pinjia Zhang","doi":"10.1109/DEMPED.2019.8864890","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864890","url":null,"abstract":"Converter transformers demand a high standard of insulation design and monitoring due to high frequency electrical stress. Traditional monitoring techniques for power transformers generally suffer from their invasive nature, and may lack sensitivity when applied to converter transformers. Effective and non-invasive insulation monitoring technique is critical for converter transformers. This paper proposes a novel online insulation monitoring technique for converter transformers, which is based on the inherent common-mode characteristic harmonics (CMCH) generated by the power switches. Two transfer functions (TF) are introduced using the measured voltages and currents at the neutral ends. Insulation ageing condition can be evaluated according to the performances of two TFs at the characteristic frequencies. Theoretical analysis, model simulation and experimental results are presented to validate the proposed technique. The importance of the proposed technique lies in its non-invasiveness and simple implementation.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121363011","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 : 2019-08-01DOI: 10.1109/DEMPED.2019.8864916
D. F. Kavanagh, K. Gyftakis, M. Mcculloch
One of the predominant fault modes of electric machines is insulation failure which may lead to short circuits and catastrophic failure. Electrical insulation materials provide the vital function of turn-to-turn, phase to phase, and phase-to-ground electrical isolation for the electromagnetic coils and circuits. This paper investigates the characterisation of early-onset degradation of thin-film magnet wire insulation at elevated temperatures from 200 to 275 °C. Sample specimens were analysed after ageing for 100 hours in terms of their physical properties (surface roughness, mass), chemical properties (Fourier Transform Infra-Red (FTIR) spectroscopy), dielectric properties (capacitance, dissipation factor and impedance) and electrical properties (voltage breakdown strength and resistance). The roughness and mass increase and decrease fairly uniformly, respectively, as might be expected, with increased ageing temperature. The dielectric and electrical properties, however, do not change uniformly with ageing temperature and the results here appear not to conform to the commonly accepted Arrhenius law for insulation lifetime versus temperature. Instead we find that for slightly elevated temperatures (200 and 215◦C) the breakdown voltage performance is significantly worse than the unaged insulation, but this improves at 230–260◦C, and then finally drops to the lowest value at 275 °C. It is unclear exactly why this is the case, but we hypothesize that it could be related to build up of thermo-mechanical stress in the polymer layers which is not relaxed at the lower ageing temperatures.
{"title":"Early-onset Degradation of Thin-film Magnet Wire Insulation for Electromechanical Energy Converters","authors":"D. F. Kavanagh, K. Gyftakis, M. Mcculloch","doi":"10.1109/DEMPED.2019.8864916","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864916","url":null,"abstract":"One of the predominant fault modes of electric machines is insulation failure which may lead to short circuits and catastrophic failure. Electrical insulation materials provide the vital function of turn-to-turn, phase to phase, and phase-to-ground electrical isolation for the electromagnetic coils and circuits. This paper investigates the characterisation of early-onset degradation of thin-film magnet wire insulation at elevated temperatures from 200 to 275 °C. Sample specimens were analysed after ageing for 100 hours in terms of their physical properties (surface roughness, mass), chemical properties (Fourier Transform Infra-Red (FTIR) spectroscopy), dielectric properties (capacitance, dissipation factor and impedance) and electrical properties (voltage breakdown strength and resistance). The roughness and mass increase and decrease fairly uniformly, respectively, as might be expected, with increased ageing temperature. The dielectric and electrical properties, however, do not change uniformly with ageing temperature and the results here appear not to conform to the commonly accepted Arrhenius law for insulation lifetime versus temperature. Instead we find that for slightly elevated temperatures (200 and 215◦C) the breakdown voltage performance is significantly worse than the unaged insulation, but this improves at 230–260◦C, and then finally drops to the lowest value at 275 °C. It is unclear exactly why this is the case, but we hypothesize that it could be related to build up of thermo-mechanical stress in the polymer layers which is not relaxed at the lower ageing temperatures.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115479334","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 : 2019-08-01DOI: 10.1109/DEMPED.2019.8864856
A. Reinap, Akanksha Upadhyay
This document presents design considerations of a sample for accelerated thermal aging tests. The proposed specimen is a parallel wired solenoid that is evaluated by using an axi-symmetric 2D finite element (FE) model in Comsol multi-physics. The aim of the design model is visualizing an interior stress distribution of an idealized coil in order to interpret the physics-of-failure in a more complex system than twisted pairs of enameled wires. Design-for-manufacture and design-for-testability aspects are considered when developing the reference FE model. Fault development is the main concern when analyzing electric field distribution across electric insulation system (EIS), and the related mechanical and thermal stresses under thermal loading conditions from deterioration of EIS to inter-turn short-circuit. The significance of this theoretical kind of preparatory study is to design a test that can facilitate recognition of a fault development and identification of related diagnostic indicators.
{"title":"Specification of a Specimen for Accelerated Thermal Aging Tests","authors":"A. Reinap, Akanksha Upadhyay","doi":"10.1109/DEMPED.2019.8864856","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864856","url":null,"abstract":"This document presents design considerations of a sample for accelerated thermal aging tests. The proposed specimen is a parallel wired solenoid that is evaluated by using an axi-symmetric 2D finite element (FE) model in Comsol multi-physics. The aim of the design model is visualizing an interior stress distribution of an idealized coil in order to interpret the physics-of-failure in a more complex system than twisted pairs of enameled wires. Design-for-manufacture and design-for-testability aspects are considered when developing the reference FE model. Fault development is the main concern when analyzing electric field distribution across electric insulation system (EIS), and the related mechanical and thermal stresses under thermal loading conditions from deterioration of EIS to inter-turn short-circuit. The significance of this theoretical kind of preparatory study is to design a test that can facilitate recognition of a fault development and identification of related diagnostic indicators.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126256464","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 : 2019-08-01DOI: 10.1109/DEMPED.2019.8864917
Genyi Luo, Jed Hurwitz, T. Habetler
The flux radiates out of the frame can be detected in the vicinity of operating motors. Spectrums of the external flux for induction machines are rich in harmonics and they are not quite the same as current spectrum. This paper gives new explanations and analysis for the slip frequency component in the axial stray flux spectrum. Experimental validation is performed. The whole broken bar is removed from the sample rotor to avoid inter-bar current. The axial stray flux spectrum for a dynamic eccentricity sample is compared with the broken bar sample and a healthy sample. The experiment results confirmed the analysis that broken rotor bar is the main cause of the slip frequency component in the axial stray flux rather than dynamic eccentricity regardless the presence of inter-bar current.
{"title":"The Effect of Broken Rotor Bar on the Low Frequency Components in the Axial Stray Flux of Induction Motors","authors":"Genyi Luo, Jed Hurwitz, T. Habetler","doi":"10.1109/DEMPED.2019.8864917","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864917","url":null,"abstract":"The flux radiates out of the frame can be detected in the vicinity of operating motors. Spectrums of the external flux for induction machines are rich in harmonics and they are not quite the same as current spectrum. This paper gives new explanations and analysis for the slip frequency component in the axial stray flux spectrum. Experimental validation is performed. The whole broken bar is removed from the sample rotor to avoid inter-bar current. The axial stray flux spectrum for a dynamic eccentricity sample is compared with the broken bar sample and a healthy sample. The experiment results confirmed the analysis that broken rotor bar is the main cause of the slip frequency component in the axial stray flux rather than dynamic eccentricity regardless the presence of inter-bar current.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128857769","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 : 2019-08-01DOI: 10.1109/DEMPED.2019.8864924
Giljun Ahn, Junmin Lee, C. Park, Myeongbaek Youn, B. Youn
This paper proposes a method for detecting inter-turn short circuit faults of surface-mounted permanent magnet synchronous motors (SPMSMs) based on reference voltage. The proposed method consists of three steps. First, from the mathematical model of faulty PMSM, a reference voltage vector in the dq-frame is separated into a healthy voltage and a faulty voltage. Second, the faulty voltage is further decomposed into a DC component and a 2nd harmonic component. Third, the relationship between these components and the inter-turn fault severity is identified. Based on the relationship, this paper proposes two fault indicators; DC bias and 2nd harmonic amplitude. Simulation results verify the effectiveness of the proposed method. The proposed method can detect inter-turn short circuit faults under low sampling rate and without the need for additional sensors. This strength can facilitate on-line fault detection.
{"title":"Inter-turn Short Circuit Fault Detection in Permanent Magnet Synchronous Motors Based on Reference Voltage","authors":"Giljun Ahn, Junmin Lee, C. Park, Myeongbaek Youn, B. Youn","doi":"10.1109/DEMPED.2019.8864924","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864924","url":null,"abstract":"This paper proposes a method for detecting inter-turn short circuit faults of surface-mounted permanent magnet synchronous motors (SPMSMs) based on reference voltage. The proposed method consists of three steps. First, from the mathematical model of faulty PMSM, a reference voltage vector in the dq-frame is separated into a healthy voltage and a faulty voltage. Second, the faulty voltage is further decomposed into a DC component and a 2nd harmonic component. Third, the relationship between these components and the inter-turn fault severity is identified. Based on the relationship, this paper proposes two fault indicators; DC bias and 2nd harmonic amplitude. Simulation results verify the effectiveness of the proposed method. The proposed method can detect inter-turn short circuit faults under low sampling rate and without the need for additional sensors. This strength can facilitate on-line fault detection.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133240764","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 : 2019-08-01DOI: 10.1109/DEMPED.2019.8864839
Feng Guo, Tao Yang, S. Bozhko, P. Wheeler
Open-switch fault accounts for large proportions among failures in power conversion system. Previously, fault defection methods are carried out by researches from transient period or circuit configuration with complicated algorithms. This paper reveals characteristics of single IGBT open-switch fault in rectifier from perspective of modulation scheme It presents that with a suitable modulation index and modulation scheme, current park's vector diagnosis method can become simple and effective for two-level three-phase AC-DC power converter. In that way, park's vector can be generalized for localizing faults in both inverter and rectifier.
{"title":"Open-Switch Fault Diagnosis for Three-Phase AC-DC Power Converter with Park's Vector Method Considering Modulation Schemes","authors":"Feng Guo, Tao Yang, S. Bozhko, P. Wheeler","doi":"10.1109/DEMPED.2019.8864839","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864839","url":null,"abstract":"Open-switch fault accounts for large proportions among failures in power conversion system. Previously, fault defection methods are carried out by researches from transient period or circuit configuration with complicated algorithms. This paper reveals characteristics of single IGBT open-switch fault in rectifier from perspective of modulation scheme It presents that with a suitable modulation index and modulation scheme, current park's vector diagnosis method can become simple and effective for two-level three-phase AC-DC power converter. In that way, park's vector can be generalized for localizing faults in both inverter and rectifier.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133366237","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 : 2019-08-01DOI: 10.1109/DEMPED.2019.8864841
E. Pahon, S. Jemei, D. Hissel
This paper deals with a supervised classification approach dedicated to diagnose a PEMFC system. The purpose is to detect and isolate a fault occurring on a fuel cell system based on electrochemical impedance measurements. The air compressor failure, fuel poisoning and stack overheating are the faults considered in this study. Some experimental tests are performed on two similar stacks (only the power changes). The k-nearest neighbors is the supervised classification method that is used as it is well known for its efficiency and simplicity of implementation.
{"title":"Supervised classification approach dedicated to proton exchange membrane fuel cell diagnostic","authors":"E. Pahon, S. Jemei, D. Hissel","doi":"10.1109/DEMPED.2019.8864841","DOIUrl":"https://doi.org/10.1109/DEMPED.2019.8864841","url":null,"abstract":"This paper deals with a supervised classification approach dedicated to diagnose a PEMFC system. The purpose is to detect and isolate a fault occurring on a fuel cell system based on electrochemical impedance measurements. The air compressor failure, fuel poisoning and stack overheating are the faults considered in this study. Some experimental tests are performed on two similar stacks (only the power changes). The k-nearest neighbors is the supervised classification method that is used as it is well known for its efficiency and simplicity of implementation.","PeriodicalId":397001,"journal":{"name":"2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130637246","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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