Pub Date : 1997-05-18DOI: 10.1109/IEMDC.1997.604336
R. Lisner, L. Timár
Current acoustic noise standards for induction machines originated when electric motor operating conditions were far less complex than those of today. The use of adjustable speed drives, incorporating electronic inverters, has led to dramatically changed motor noise characteristics. This paper presents a systematic approach to broadening the existing standards, to make them more useful in the true operating environment.
{"title":"A new approach to electric motor acoustic noise standards and test procedures","authors":"R. Lisner, L. Timár","doi":"10.1109/IEMDC.1997.604336","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604336","url":null,"abstract":"Current acoustic noise standards for induction machines originated when electric motor operating conditions were far less complex than those of today. The use of adjustable speed drives, incorporating electronic inverters, has led to dramatically changed motor noise characteristics. This paper presents a systematic approach to broadening the existing standards, to make them more useful in the true operating environment.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"11 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126170848","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 : 1997-05-18DOI: 10.1109/IEMDC.1997.604099
G.A. Simone, R.C. Creppe, C. R. Souza
An application of the linear machine one-dimensional analysis method to the modeling of a conventional asynchronous induction motor, considered as a particular case of linear and sectorial machines, is described. A mathematical model for the calculation of the propulsive force developed by this motor, taking into account the transversal edge effect, is derived from the application of the one-dimensional theory and presented in this paper. As an application example, an induction motor is analyzed by means of the one-dimensional theory.
{"title":"The asynchronous motor one-dimensional analysis","authors":"G.A. Simone, R.C. Creppe, C. R. Souza","doi":"10.1109/IEMDC.1997.604099","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604099","url":null,"abstract":"An application of the linear machine one-dimensional analysis method to the modeling of a conventional asynchronous induction motor, considered as a particular case of linear and sectorial machines, is described. A mathematical model for the calculation of the propulsive force developed by this motor, taking into account the transversal edge effect, is derived from the application of the one-dimensional theory and presented in this paper. As an application example, an induction motor is analyzed by means of the one-dimensional theory.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126046408","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 : 1997-05-18DOI: 10.1109/IEMDC.1997.604230
J. Seok, S. Sul
This paper presents the optimal flux selection of an induction machine for torque maximization over the entire flux weakening region. Based on the bounded constraints on both current and voltage, the optimal flux values which maximize the torque are obtained by solving first-order differential equation of the rotor flux. This leads naturally to three regions of operation in which the induction machine is at either the current constraint, the voltage constraint, or at both simultaneously. The optimal onset of these regions is automatically adjusted to achieve the full utilization of the torque capability. These results provide the significant increase in the available torque compared with any other conventional methods.
{"title":"Optimal flux selection of an induction machine for torque maximization","authors":"J. Seok, S. Sul","doi":"10.1109/IEMDC.1997.604230","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604230","url":null,"abstract":"This paper presents the optimal flux selection of an induction machine for torque maximization over the entire flux weakening region. Based on the bounded constraints on both current and voltage, the optimal flux values which maximize the torque are obtained by solving first-order differential equation of the rotor flux. This leads naturally to three regions of operation in which the induction machine is at either the current constraint, the voltage constraint, or at both simultaneously. The optimal onset of these regions is automatically adjusted to achieve the full utilization of the torque capability. These results provide the significant increase in the available torque compared with any other conventional methods.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129797320","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 : 1997-05-18DOI: 10.1109/IEMDC.1997.604226
J. Sakellaris, J. Xypteras, T. Tsiboukis
It is very important to efficiently design induction motors from the thermal point of view. For this task it is crucial to compute correctly the induced currents in the rotors, because heating is principally generated there. The currents flowing in the coils of the stator are another source of heating. This paper presents a weak coupled model of the electromagnetic and the thermal phenomena for transients. Special attention is paid to model correctly the air gap zone for the thermal part.
{"title":"A coupled magnetic thermal model for transients of asynchronous machines","authors":"J. Sakellaris, J. Xypteras, T. Tsiboukis","doi":"10.1109/IEMDC.1997.604226","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604226","url":null,"abstract":"It is very important to efficiently design induction motors from the thermal point of view. For this task it is crucial to compute correctly the induced currents in the rotors, because heating is principally generated there. The currents flowing in the coils of the stator are another source of heating. This paper presents a weak coupled model of the electromagnetic and the thermal phenomena for transients. Special attention is paid to model correctly the air gap zone for the thermal part.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129398247","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 : 1997-05-18DOI: 10.1109/IEMDC.1997.604233
R. Beguenane, M. El Hachemi Benbouzid, M. Tadjine, Abdelhamid Tayebi
This paper deals with simultaneous estimation of induction motor speed and its inverse rotor time constant for sensorless induction machine drive purposes. The proposed algorithm is based on the model reference adaptive system theory (MRAS). The simulation results seem to be very satisfactory for a large wide of supply frequency and torque load.
{"title":"Speed and rotor time constant estimation via MRAS strategy for induction motor drives","authors":"R. Beguenane, M. El Hachemi Benbouzid, M. Tadjine, Abdelhamid Tayebi","doi":"10.1109/IEMDC.1997.604233","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604233","url":null,"abstract":"This paper deals with simultaneous estimation of induction motor speed and its inverse rotor time constant for sensorless induction machine drive purposes. The proposed algorithm is based on the model reference adaptive system theory (MRAS). The simulation results seem to be very satisfactory for a large wide of supply frequency and torque load.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"67 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129625566","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 : 1997-05-18DOI: 10.1109/IEMDC.1997.604273
A. Wijenayake, P. Schmidt
Development of sensorless control schemes for permanent magnet synchronous machines and related topics of machine parameter estimation have received much attention during the last few years. Most of the sensorless schemes are based on the measurements of motor currents, voltages, and motor parameters. Subsequently the accuracy of such methods greatly depends on the availability of an accurate circuit model for the motor. This paper presents a detailed analytical method to obtain an accurate synchronous reference frame motor model by taking loss components and parameter variations into account. Also, a method for on-line parameter identification to improve the model, test schemes to measure the equivalent circuit parameters and to calculate constants that govern the parameter variations, are discussed.
{"title":"A more accurate permanent magnet synchronous motor model by taking parameter variations and loss components into account for sensorless control applications","authors":"A. Wijenayake, P. Schmidt","doi":"10.1109/IEMDC.1997.604273","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604273","url":null,"abstract":"Development of sensorless control schemes for permanent magnet synchronous machines and related topics of machine parameter estimation have received much attention during the last few years. Most of the sensorless schemes are based on the measurements of motor currents, voltages, and motor parameters. Subsequently the accuracy of such methods greatly depends on the availability of an accurate circuit model for the motor. This paper presents a detailed analytical method to obtain an accurate synchronous reference frame motor model by taking loss components and parameter variations into account. Also, a method for on-line parameter identification to improve the model, test schemes to measure the equivalent circuit parameters and to calculate constants that govern the parameter variations, are discussed.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127689771","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 : 1997-05-18DOI: 10.1109/IEMDC.1997.604300
L. Reyes Rosales Montero, W. Santos Mota, M.W. Gemerts
A new alternative is proposed in this work. It presents a control and monitoring system for a turbine and synchronous generator. A single processor architecture IBM-PC and a data acquisition board with its signal conditioning circuits are used. Two sensors of electric magnitudes based on microcomputers are implemented: load angle for synchronous machine; and electric frequency. The working principles and experimental results are presented.
{"title":"Monitoring and control system based on microcomputer for synchronous generator","authors":"L. Reyes Rosales Montero, W. Santos Mota, M.W. Gemerts","doi":"10.1109/IEMDC.1997.604300","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604300","url":null,"abstract":"A new alternative is proposed in this work. It presents a control and monitoring system for a turbine and synchronous generator. A single processor architecture IBM-PC and a data acquisition board with its signal conditioning circuits are used. Two sensors of electric magnitudes based on microcomputers are implemented: load angle for synchronous machine; and electric frequency. The working principles and experimental results are presented.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124035536","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 : 1997-05-18DOI: 10.1109/IEMDC.1997.604313
Chee Lu, A. Renfrew, B. Chalmers, Shenghua Huang
Harmonic torque control has been used for constant mean torque production and cogging torque cancellation in AC permanent magnet motor drives. Presently, most methods require Fourier series analysis and either iterative or least squares minimization methods. In this paper, a novel approach based on instantaneous power theory is described which eliminates existing drawbacks.
{"title":"Novel approach to current profiling for AC permanent magnet motors","authors":"Chee Lu, A. Renfrew, B. Chalmers, Shenghua Huang","doi":"10.1109/IEMDC.1997.604313","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604313","url":null,"abstract":"Harmonic torque control has been used for constant mean torque production and cogging torque cancellation in AC permanent magnet motor drives. Presently, most methods require Fourier series analysis and either iterative or least squares minimization methods. In this paper, a novel approach based on instantaneous power theory is described which eliminates existing drawbacks.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121454568","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 : 1997-05-18DOI: 10.1109/IEMDC.1997.604059
Dong-Joon Sim, Dong-Hyeok Cho, Hyun-Kyo Jung, S. Hahn
This paper describes the optimal design of interior permanent magnet synchronous motors for which two objective functions regarding motor efficiency and weight are used. Multiobjective optimization technique is applied to finding the optimal solution in this case. An optimal design method that determines both the noninferior set and the best compromise solution employing a modified genetic algorithm is proposed. In order to predict the motor performance more accurately, a core loss formula is derived considering the flux variation due to the armature reaction MMF as well as that due to the magnet.
{"title":"Multiobjective optimal design of interior permanent magnet synchronous motors considering improved core loss formula","authors":"Dong-Joon Sim, Dong-Hyeok Cho, Hyun-Kyo Jung, S. Hahn","doi":"10.1109/IEMDC.1997.604059","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604059","url":null,"abstract":"This paper describes the optimal design of interior permanent magnet synchronous motors for which two objective functions regarding motor efficiency and weight are used. Multiobjective optimization technique is applied to finding the optimal solution in this case. An optimal design method that determines both the noninferior set and the best compromise solution employing a modified genetic algorithm is proposed. In order to predict the motor performance more accurately, a core loss formula is derived considering the flux variation due to the armature reaction MMF as well as that due to the magnet.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127737050","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 : 1997-05-18DOI: 10.1109/IEMDC.1997.604086
T. Chan
This paper analyzes the performance of a three-phase induction generator which is connected to a single-phase power system. Significant improvement in machine performance can be obtained by using a static phase-converter, provided that the machine is driven in the reverse direction. The theoretical analysis a validated by experiments on a 2 kW test machine.
{"title":"Effect of rotational direction on the performance of a three-phase induction generator connected to a single-phase power system","authors":"T. Chan","doi":"10.1109/IEMDC.1997.604086","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604086","url":null,"abstract":"This paper analyzes the performance of a three-phase induction generator which is connected to a single-phase power system. Significant improvement in machine performance can be obtained by using a static phase-converter, provided that the machine is driven in the reverse direction. The theoretical analysis a validated by experiments on a 2 kW test machine.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131214957","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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