Pub Date : 1997-05-18DOI: 10.1109/IEMDC.1997.604170
J. De León‐Morales, R. Salas-Cabrera
In this work a new speed control for a symmetrical squirrel cage induction motor is presented. We consider two cases: (i) under assumption of the knowledge of load torque, we derive an observerless scheme, for which a stability analysis is given; and (ii) when the load torque is unknown, a nonlinear observer is used and the analysis is carried out in order to guarantee the stability properties of the closed loop system, including the observer.
{"title":"On the nonlinear control of induction motors","authors":"J. De León‐Morales, R. Salas-Cabrera","doi":"10.1109/IEMDC.1997.604170","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604170","url":null,"abstract":"In this work a new speed control for a symmetrical squirrel cage induction motor is presented. We consider two cases: (i) under assumption of the knowledge of load torque, we derive an observerless scheme, for which a stability analysis is given; and (ii) when the load torque is unknown, a nonlinear observer is used and the analysis is carried out in order to guarantee the stability properties of the closed loop system, including the observer.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"134 1-3 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":"116708091","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.1997.604178
S. Vaez, V. I. John, M.A. Rahman
An adaptive loss minimization controller (ALMC) is proposed for interior permanent magnet (IPM) motor drives for the first time. The loss minimization process is very fast and the drive performance is very smooth under the ALMC scheme which is implemented by using a TMS320C31 DSP. Excellent experimental results validate the ability of the proposed ALMC to minimize the total drive losses precisely.
{"title":"An on-line loss minimization controller for interior permanent magnet motor drives","authors":"S. Vaez, V. I. John, M.A. Rahman","doi":"10.1109/IEMDC.1997.604178","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604178","url":null,"abstract":"An adaptive loss minimization controller (ALMC) is proposed for interior permanent magnet (IPM) motor drives for the first time. The loss minimization process is very fast and the drive performance is very smooth under the ALMC scheme which is implemented by using a TMS320C31 DSP. Excellent experimental results validate the ability of the proposed ALMC to minimize the total drive losses precisely.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"18 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":"114513964","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.1997.604201
B. Bose
Intelligent control and estimation of power electronic systems by fuzzy logic and neural network techniques show tremendous promise for the future. The paper discusses primarily the work done in this area in the University of Tennessee Power Electronics Laboratory. Altogether seven projects are discussed These are: (1) fuzzy controlled DC motor drive, (2) induction motor drive with fuzzy efficiency optimizer, (3) fuzzy logic based control of wind generation system, (4) AC machine temperature and winding resistance estimation by fuzzy logic, (3) neural network based feedback signal estimation of AC drive, (6) neuro-fuzzy efficiency optimization of induction motor drive, and (7) waveform estimation by neural network.
{"title":"Intelligent control and estimation in power electronics and drives","authors":"B. Bose","doi":"10.1109/IEMDC.1997.604201","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604201","url":null,"abstract":"Intelligent control and estimation of power electronic systems by fuzzy logic and neural network techniques show tremendous promise for the future. The paper discusses primarily the work done in this area in the University of Tennessee Power Electronics Laboratory. Altogether seven projects are discussed These are: (1) fuzzy controlled DC motor drive, (2) induction motor drive with fuzzy efficiency optimizer, (3) fuzzy logic based control of wind generation system, (4) AC machine temperature and winding resistance estimation by fuzzy logic, (3) neural network based feedback signal estimation of AC drive, (6) neuro-fuzzy efficiency optimization of induction motor drive, and (7) waveform estimation by neural network.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"26 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":"128098066","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.1997.604221
C. Rajanathan, Z. W. Shi, A. Sapeluk, N. Taylor
The paper describes a new form of actuator that depends on eddy currents for its operation. Its design with the aid of computational electromagnetics taking account of the external supply and thermal effects is presented. The thrust vs displacement characteristic of the actuator is shown to depend on one design parameter. Its control is achieved by the use of DSP hardware and software.
{"title":"Design and control of an electromagnetic actuator without mechanical springs","authors":"C. Rajanathan, Z. W. Shi, A. Sapeluk, N. Taylor","doi":"10.1109/IEMDC.1997.604221","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604221","url":null,"abstract":"The paper describes a new form of actuator that depends on eddy currents for its operation. Its design with the aid of computational electromagnetics taking account of the external supply and thermal effects is presented. The thrust vs displacement characteristic of the actuator is shown to depend on one design parameter. Its control is achieved by the use of DSP hardware and software.","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":"125848364","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.1997.604234
A. Benyahia, P. Boucher, D. Dumur
A multivariable cascaded generalized predictive control law, with multiple reference models (MGPC/MRM) is proposed in this paper, to control velocity, torque and flux of an induction machine. This application of the GPC algorithm is based on the input-output linearised motor model.
{"title":"Control of an induction machine with feedback linearisation and multivariable cascaded predictive structure","authors":"A. Benyahia, P. Boucher, D. Dumur","doi":"10.1109/IEMDC.1997.604234","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604234","url":null,"abstract":"A multivariable cascaded generalized predictive control law, with multiple reference models (MGPC/MRM) is proposed in this paper, to control velocity, torque and flux of an induction machine. This application of the GPC algorithm is based on the input-output linearised motor model.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"84 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":"125887722","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.1997.604153
S. Kurz, J. Fetzer, T. Kube, G. Lehner, Wolfgang M. Rucker
This paper deals with the transient numerical analysis of electromechanical devices driven by thin wire coils. The dynamic behaviour is described by the Maxwell equations, by the constitutive equations, and by the equations of motion. For the solution of the electromagnetic problem the BEM-FEM coupling method is used. A watch stepping motor is presented as an example.
{"title":"Transient BEM-FEM coupled analysis of 3-D electromechanical systems: a watch stepping motor driven by a thin wire coil","authors":"S. Kurz, J. Fetzer, T. Kube, G. Lehner, Wolfgang M. Rucker","doi":"10.1109/IEMDC.1997.604153","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604153","url":null,"abstract":"This paper deals with the transient numerical analysis of electromechanical devices driven by thin wire coils. The dynamic behaviour is described by the Maxwell equations, by the constitutive equations, and by the equations of motion. For the solution of the electromagnetic problem the BEM-FEM coupling method is used. A watch stepping motor is presented as an example.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"9 10 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":"126097370","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.1997.604210
I. Chabu, V. C. Silva, S. I. Nabeta, J. Cardosa, A. Foggia
The influence of rotor geometry of synchronous reluctance motors (SRM) on the x/sub d//x/sub q/ ratio, on electromagnetic torque and on iron losses is studied. Both air-gap and rotor pole are are taken into account as parameters. In Part I, a new theoretical approach was developed which neglects saturation effects. Here, a complete finite-element analysis of a particular SRM is carried out, followed by a comparison with results obtained by tests performed in a prototype machine, which was constructed in order to test and validate the proposed methodology.
{"title":"A new design technique based on a suitable choice of rotor geometrical parameters to maximize torque and power factor in synchronous reluctance motors. II. Finite-element analysis and measurements","authors":"I. Chabu, V. C. Silva, S. I. Nabeta, J. Cardosa, A. Foggia","doi":"10.1109/IEMDC.1997.604210","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604210","url":null,"abstract":"The influence of rotor geometry of synchronous reluctance motors (SRM) on the x/sub d//x/sub q/ ratio, on electromagnetic torque and on iron losses is studied. Both air-gap and rotor pole are are taken into account as parameters. In Part I, a new theoretical approach was developed which neglects saturation effects. Here, a complete finite-element analysis of a particular SRM is carried out, followed by a comparison with results obtained by tests performed in a prototype machine, which was constructed in order to test and validate the proposed methodology.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"32 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":"124954811","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.1997.604069
C. H. Salerno, J. Camacho, L. Leite, L. M. Neto
This work has developed a steady-state and dynamic mathematical model of three phase slip-ring induction motors with external impedance. Differential equations are solved using computer simulation and data for an induction machine are obtained from laboratory tests. It is shown that harmonics due to impedance asymmetry produce changes on the electromagnetic torque and induce harmonic frequency currents in the stator windings.
{"title":"Three-phase slip-ring induction motor: effects of rotor asymmetry","authors":"C. H. Salerno, J. Camacho, L. Leite, L. M. Neto","doi":"10.1109/IEMDC.1997.604069","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604069","url":null,"abstract":"This work has developed a steady-state and dynamic mathematical model of three phase slip-ring induction motors with external impedance. Differential equations are solved using computer simulation and data for an induction machine are obtained from laboratory tests. It is shown that harmonics due to impedance asymmetry produce changes on the electromagnetic torque and induce harmonic frequency currents in the stator windings.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"34 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":"124131150","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.1997.604182
J. Haylock, B. Mecrow, A. Jack, D. Atkinson
This paper examines winding faults in a demonstrator switched reluctance motor (SRM) drive, based on the specification for an aircraft fuel pump. This motor drive has been designed with a degree of inherent fault tolerance and is capable of continued operation in the presence of a variety of faults. The paper focuses on the possible consequences of winding insulation failure within a phase of the machine. A method of detecting turn to turn short circuits which may result from winding insulation breakdown is presented, along with a strategy for continued post fault operation of the drive.
{"title":"Operation of fault tolerant machines with winding failures","authors":"J. Haylock, B. Mecrow, A. Jack, D. Atkinson","doi":"10.1109/IEMDC.1997.604182","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604182","url":null,"abstract":"This paper examines winding faults in a demonstrator switched reluctance motor (SRM) drive, based on the specification for an aircraft fuel pump. This motor drive has been designed with a degree of inherent fault tolerance and is capable of continued operation in the presence of a variety of faults. The paper focuses on the possible consequences of winding insulation failure within a phase of the machine. A method of detecting turn to turn short circuits which may result from winding insulation breakdown is presented, along with a strategy for continued post fault operation of the drive.","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":"129280841","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.1997.604265
T. Larsson, R. Innanen, G. Norstrom
Industrial equipment such as speed drives, electronics, controls and robotics and computer and communication systems are affected by bad power quality. Voltage dips/sags can cause shutdown of whole plants or result in quality reductions. With an electronic tap-changer (DVR), most of the voltage dips can be avoided. The tap-changer can regulate voltage dips within one cycle to levels that maintain the equipment in good operation. Since static electronic tap-changers do not have moving parts in the current path only simple maintenance is required and there are almost no limitations in the number of operations during their lifetime. The tap-changer can be mounted on to a full transformer, an auto-transformer or a booster transformer in different current and voltage ratings to fit all utility demands.
{"title":"Static electronic tap-changer for fast phase voltage control","authors":"T. Larsson, R. Innanen, G. Norstrom","doi":"10.1109/IEMDC.1997.604265","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604265","url":null,"abstract":"Industrial equipment such as speed drives, electronics, controls and robotics and computer and communication systems are affected by bad power quality. Voltage dips/sags can cause shutdown of whole plants or result in quality reductions. With an electronic tap-changer (DVR), most of the voltage dips can be avoided. The tap-changer can regulate voltage dips within one cycle to levels that maintain the equipment in good operation. Since static electronic tap-changers do not have moving parts in the current path only simple maintenance is required and there are almost no limitations in the number of operations during their lifetime. The tap-changer can be mounted on to a full transformer, an auto-transformer or a booster transformer in different current and voltage ratings to fit all utility demands.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"27 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":"127685329","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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