{"title":"Use of axial flux in the detection of electrical faults in induction motors","authors":"P. Ewert","doi":"10.1109/ISEM.2017.7993571","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993571","url":null,"abstract":"The article presents the possibility of using an axial flux in the detection of electrical faults in induction motors. The work presents results obtained for a faulty rotor squirrel cage and a stator winding short-circuit. Fault detection and identification is based on the analysis of symptoms obtained from the Fast Fourier Transform of a voltage induced by an axial flux in a measurement coil. The laboratory research was conducted on a small power induction motor using the LabView software.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129901884","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}
{"title":"Influence of magnet and cage shape on properties of the line start synchronous motor with powder hybrid rotor","authors":"W. Lyskawinski, C. Jędryczka, W. Szelag","doi":"10.1109/ISEM.2017.7993556","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993556","url":null,"abstract":"The new structure of the line start synchronous motor with the arc bonded magnets placed inside the rotor and the magnetic circuit made of the Somaloy 500 powder material has been presented. In order to obtain line start ability a squirrel-cage was placed in the rotor. The field-circuit model of the considered motor has been elaborated in the Maxwell environment. To perform analysis in the elaborated model the geometries of the squirrel-cage bars and magnets have been parameterized. A sensitivity analysis of magnet and bar shapes has been carried out. Particular attention was paid to the dimensions of the magnet, which have the greatest impact on functional parameters of the motor in the steady state operation. The selected simulation results of starting up and steady state operation have been presented.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127846631","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}
{"title":"Analysis of state of operation of asynchronous motor with stator slot frequency beat vibration","authors":"A. Biernat, P. Góralski","doi":"10.1109/ISEM.2017.7993560","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993560","url":null,"abstract":"Low rotational speed vertical 800 kW asynchronous motors coupled with diagonal pump characterize qualitative change of housing vibrations that depend on slight load changes and motor frame assembling stress. The aim of this paper is to clarify the origin of beat stator vibrations and define particular conditions of motor operation that cause the beat phenomena.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126839924","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}
{"title":"Induced pole permanent magnet synchronous motor","authors":"M. Gwozdziewicz, J. Zawilak","doi":"10.1109/ISEM.2017.7993543","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993543","url":null,"abstract":"The paper deals with induced pole line start permanent magnet synchronous motor. Construction of 4-pole motor is presented. The motor is based on standard IE1 induction motor Sh90L-4 1.5 kW 400 V 50 Hz. Running and starting properties were examined.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"90 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127469002","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}
{"title":"Study on 3-winding system with angular asymmetry part II - eigenvalues of inductance matrix and transformation αβ0","authors":"K. Kluszczyński, M. Szczygieł","doi":"10.1109/ISEM.2017.7993579","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993579","url":null,"abstract":"One of the most frequently-used coordinate system in theory of electrical circuits is the coordinate system spanned on eigenvectors which leads to diagonal structure of matrix relation between input and output variables. So far, this coordinate system has not been considered in details in relation to a 3-phase system of windings with angular asymmetry. In the paper the characteristic equation is formulated and eigenvalues are determined as function of angles between consecutive windings. The paper is enriched by graphical presentation of equivalent schemes and discussion on possible physical models of 3-winding asymmetrical system in coordinates αβ0 linked with eigenvector coordinate system.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134466162","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}
{"title":"An application of machine learning approach to fault detection of a synchronous machine","authors":"J. G. Ferreira, A. Warzecha","doi":"10.1109/ISEM.2017.7993548","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993548","url":null,"abstract":"Accurate fault diagnosis systems should consider both the historical performance and the assessment of the current state of a machine. Manufacturing, installation, operation and maintenance are part of the machine's history and should be taken into account. The paper focuses on experimental procedures to develop a multi-criteria methodology to classify up to ten machine conditions. Using machine learning for signal processing techniques, any deviation from a normal steady state might be categorized as an abnormal behavior and, when demonstrated, a fault. To take advantage of machine learning algorithms, a significant amount of data is needed. To demonstrate the procedure the authors examined a synchronous machine. The authors recorded currents and voltages primarily, in stator and rotor winding, well as rotational speed and electromechanical torque. The collected signals were filtered and pre-processed, and to 5038 features were calculated and transformed into a tidy dataset. The sparse Linear Discriminant Analysis algorithm was used to extract the most important defined features. The results are shown in 3D scatter plots; in which each machine condition is represented. It is then possible to visualize the ability of the model to identify the most discriminant features. The same method can be used for the diagnostic of other types of machine conditions.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132890096","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}
{"title":"Detection of coil shorting in an induction motor by means of wavelet detectors based on orthogonal Legendre polynomials","authors":"M. Zajac, M. Sułowicz","doi":"10.1109/ISEM.2017.7993569","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993569","url":null,"abstract":"This paper presents the application of narrowband detection wavelet filters, which use the Legendre orthogonal polynomial family, in the diagnostics of coil shorting in induction motors. Wavelet orthonormal bases were built with the use of the recurrent relationships generating higher-degree Legendre polynomials. For the scaling function constructed in the form of linear combination of Legendre polynomials of the selected levels, synthesis of the basic wavelet was performed - this mapped the characteristic properties of the signal carrying the information about the nature of the fault. A signal proportional to the machine axial flux was used for the analysis - this enabled the required diagnostics. On the basis of the constructed wavelet bases, the results of the analyses of the signals registered in the different states of the winding short-circuits of the stator winding of an induction motor operating under the constant load, were presented. The choice of an advanced method of analysis was dictated by the occurrence of the periodic energy flow of signals between the adjacent frequency bands which made the Fourier analyses ineffective.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115382189","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}
{"title":"Analysis of the multi-drive powered permanent magnet synchronous motor under drive fault conditions","authors":"C. Jędryczka, W. Szelag","doi":"10.1109/ISEM.2017.7993555","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993555","url":null,"abstract":"The paper deals with analysis of operation under fault conditions of the permanent magnet synchronous motor (PMSM) supply systems composed of a number of 3-phase drives. The considered 3 test PMSM differ in number of phases of supply system and arrangement of the windings. The elaborated field models of these motors have been used to determine the electromagnetic torque and unbalanced magnetic pull force waveforms under the drive fault conditions. The selected results of simulations have been presented and discussed.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121095098","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}
{"title":"The possibility of distinguishing rotor cage bar faults in double squirrel cage induction motors on the basis of the stator current signal","authors":"J. Tulicki, K. Weinreb, M. Sułowicz","doi":"10.1109/ISEM.2017.7993563","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993563","url":null,"abstract":"This paper discusses the possibility of using the stator phase current waveform as a diagnostic signal for the detection of faults in the double squirrel cage induction motor. Current waveforms during the start-up state and steady state were analysed for variants of the given fault for both cages of the rotor. The usefulness of the assessment criteria of the rotor state of a single cage motor was examined for double cage machines. On the basis of the tests conducted on the double cage motor prototype, conditions were formulated for distinguishing faults in both cages of medium and high power machines.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124777707","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}
{"title":"A simple way of determining stator-to-field winding mutual inductance functions of a salient pole synchronous generator","authors":"K. Ludwinek","doi":"10.1109/ISEM.2017.7993576","DOIUrl":"https://doi.org/10.1109/ISEM.2017.7993576","url":null,"abstract":"This paper presents a simple method for determining the stator and field winding mutual inductances. The mutual inductances are determined on the basis of experimental measurement of the induced stator phase voltages for a salient pole synchronous generator with 10 damping bars and rotor skew. A mathematical model of a salient pole synchronous generator with 10 damping bars and rotor skew in the natural reference frame is presented. During the simulation, current waveforms calculated in damping bars in a no-load steady state are presented.","PeriodicalId":286682,"journal":{"name":"2017 International Symposium on Electrical Machines (SME)","volume":"101-102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121579501","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}