Pub Date : 1997-05-18DOI: 10.1109/IEMDC.1997.604256
J. Oliver, M. Samotyj, Y. Shakarian, Y. Vinitsky
This paper describes the experience of retrofitting the boiler feed pumps of fossil generating units in the USA during 1985-87 in an EPRI field test program. While this work was done 10 years ago, the lessons learned from the work apply today. Most of the ASD technology used in these tests is still in use today with several orders of magnitude better reliability. This EPRI work has led to a US/Russian study by EPRT and its Russian counterpart, VNIIE, of retrofitting boiler feed pumps in Russia.
{"title":"Adjustable-speed drives for thermal power plant boiler feed pumps. Russian and American experience","authors":"J. Oliver, M. Samotyj, Y. Shakarian, Y. Vinitsky","doi":"10.1109/IEMDC.1997.604256","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604256","url":null,"abstract":"This paper describes the experience of retrofitting the boiler feed pumps of fossil generating units in the USA during 1985-87 in an EPRI field test program. While this work was done 10 years ago, the lessons learned from the work apply today. Most of the ASD technology used in these tests is still in use today with several orders of magnitude better reliability. This EPRI work has led to a US/Russian study by EPRT and its Russian counterpart, VNIIE, of retrofitting boiler feed pumps in Russia.","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":"132416626","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.1997.604286
V. Sharma, B. Singh, S. Murthy
This paper presents the analysis of a new power converter-inverter topology for switched reluctance motor (SRM) drive applications. The SRM is fed from a power converter-inverter system. The current-controlled power converter draws sinusoidal AC currents from the supply mains and maintains them in-phase with the supply voltages, thereby facilitating unity power factor operation.
{"title":"Performance analysis of unity power factor converter-inverter fed switched reluctance motor drive","authors":"V. Sharma, B. Singh, S. Murthy","doi":"10.1109/IEMDC.1997.604286","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604286","url":null,"abstract":"This paper presents the analysis of a new power converter-inverter topology for switched reluctance motor (SRM) drive applications. The SRM is fed from a power converter-inverter system. The current-controlled power converter draws sinusoidal AC currents from the supply mains and maintains them in-phase with the supply voltages, thereby facilitating unity power factor operation.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"122 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":"131969233","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.1997.604231
Tae-Sik Park, Seong-Hwan Kim, N. Kim, Jiyoon Yoo, Gwi-Tae Park
This paper examines the improvement of the speed-sensorless vector control performance of an induction motor with a speed estimator using the self-tuning regulator (STR) control scheme. The proposed scheme, which consists of a recursive least squares algorithm and a PI control algorithm, increases the stability and improves the control performance in both the steady-state and transient state for both varying and constant speed references.
{"title":"Speed-sensorless vector control of an induction motor using recursive least square algorithm","authors":"Tae-Sik Park, Seong-Hwan Kim, N. Kim, Jiyoon Yoo, Gwi-Tae Park","doi":"10.1109/IEMDC.1997.604231","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604231","url":null,"abstract":"This paper examines the improvement of the speed-sensorless vector control performance of an induction motor with a speed estimator using the self-tuning regulator (STR) control scheme. The proposed scheme, which consists of a recursive least squares algorithm and a PI control algorithm, increases the stability and improves the control performance in both the steady-state and transient state for both varying and constant speed references.","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":"126919080","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.1997.604061
R. Wallace, T. Lipo, L. Morán, J. Tapia
This paper presents the design characteristics, special features, and manufacturing aspects of a permanent magnet axial flux synchronous generator. This machine is aimed at applications in the low power low speed range (5 kVA, 500 rpm). A central stator configuration is selected for the construction of the axial flux generator, so that the stator leakage inductance is significantly reduced.
{"title":"Design and construction of a permanent magnet axial flux synchronous generator","authors":"R. Wallace, T. Lipo, L. Morán, J. Tapia","doi":"10.1109/IEMDC.1997.604061","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604061","url":null,"abstract":"This paper presents the design characteristics, special features, and manufacturing aspects of a permanent magnet axial flux synchronous generator. This machine is aimed at applications in the low power low speed range (5 kVA, 500 rpm). A central stator configuration is selected for the construction of the axial flux generator, so that the stator leakage inductance is significantly reduced.","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":"126205313","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.1997.604284
A. Arkadan, A. A. Russell, F. N. Isaac, A. El-Antably, N. Demerdash
A computer aided model is used to predict the performance characteristics of synchronous reluctance motor (SynRM) drives. The approach indirectly couples a two dimensional (2D) nonlinear finite element (FE) model, which accounts for magnetic saturation and space harmonics, to a time variant state space model describing the SynRM drive system. The effects of various modes of excitation on the axially laminated anisotropic (ALA) rotor synchronous reluctance motor drive system performance characteristics are studied. The simulation results are also validated by comparison to test data of a prototype ALA rotor SynRM drive system.
{"title":"Computer aided models for the characterization of synchronous reluctance motor drive systems","authors":"A. Arkadan, A. A. Russell, F. N. Isaac, A. El-Antably, N. Demerdash","doi":"10.1109/IEMDC.1997.604284","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604284","url":null,"abstract":"A computer aided model is used to predict the performance characteristics of synchronous reluctance motor (SynRM) drives. The approach indirectly couples a two dimensional (2D) nonlinear finite element (FE) model, which accounts for magnetic saturation and space harmonics, to a time variant state space model describing the SynRM drive system. The effects of various modes of excitation on the axially laminated anisotropic (ALA) rotor synchronous reluctance motor drive system performance characteristics are studied. The simulation results are also validated by comparison to test data of a prototype ALA rotor SynRM drive system.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"17 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":"123125817","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.1997.604148
Jiang Li, D. Liang
A novel control scheme of direct flux space vector modulation (DFSVM) is proposed for inverter-fed AC motor drives. The proposed scheme is characterised by reduced switching losses for the device and low harmonic current at high output voltage for the motor, resulting in a low harmonic loss and reduced torque ripple drive. Theoretical analyses are presented, and the claimed benefits are verified by experimental results.
{"title":"Novel control scheme for reduced switching loss in inverter drives","authors":"Jiang Li, D. Liang","doi":"10.1109/IEMDC.1997.604148","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604148","url":null,"abstract":"A novel control scheme of direct flux space vector modulation (DFSVM) is proposed for inverter-fed AC motor drives. The proposed scheme is characterised by reduced switching losses for the device and low harmonic current at high output voltage for the motor, resulting in a low harmonic loss and reduced torque ripple drive. Theoretical analyses are presented, and the claimed benefits are verified by experimental results.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"24 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":"122231415","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.1997.604337
A. Wallace, A. von Jouanne, E. Wiedenbrug, J. Douglass, C. Wohlgemuth, G. Wainwright
Determining in-service motor efficiencies is important to industries concerned with energy conservation and cost savings. However, nonintrusive efficiency measurements of installed motors can be difficult to obtain and even more difficult to verify. This paper evaluates and compares twelve motor efficiency methods through laboratory testing to assess their accuracy and precision. An analysis of the methods and implementation procedures is discussed.
{"title":"A laboratory assessment of in-service motor efficiency testing methods","authors":"A. Wallace, A. von Jouanne, E. Wiedenbrug, J. Douglass, C. Wohlgemuth, G. Wainwright","doi":"10.1109/IEMDC.1997.604337","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604337","url":null,"abstract":"Determining in-service motor efficiencies is important to industries concerned with energy conservation and cost savings. However, nonintrusive efficiency measurements of installed motors can be difficult to obtain and even more difficult to verify. This paper evaluates and compares twelve motor efficiency methods through laboratory testing to assess their accuracy and precision. An analysis of the methods and implementation procedures is discussed.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"702 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":"125732221","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.1997.604244
A. Alolah
In this paper the application of the induction generator is presented for exciting synchronous machines. Different configurations to construct the proposed scheme, are described and discussed. The analysis and experimental results are given for one of these configurations.
{"title":"Excitation of synchronous machines using induction generators","authors":"A. Alolah","doi":"10.1109/IEMDC.1997.604244","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604244","url":null,"abstract":"In this paper the application of the induction generator is presented for exciting synchronous machines. Different configurations to construct the proposed scheme, are described and discussed. The analysis and experimental results are given for one of these configurations.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"294 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":"121258016","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.1997.604155
Sang-Baeck Yoon, J. Hur, Y. Chun, D. Hyun
This paper presents the construction method of equivalent circuit and optimization of design variables in single-phase permanent-split capacitor induction motor. For the equivalent circuit, we propose the calculation method of magnetizing reactance according to slip from the circuit equation. Simulation results are compared with experimental results in the characteristics of 4 different models of the motors. The sequential quadratic programming (SQP) is applied to solve the optimal design.
{"title":"A construction method of equivalent circuit and optimization of design variables in single-phase permanent-split capacitor induction motor","authors":"Sang-Baeck Yoon, J. Hur, Y. Chun, D. Hyun","doi":"10.1109/IEMDC.1997.604155","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604155","url":null,"abstract":"This paper presents the construction method of equivalent circuit and optimization of design variables in single-phase permanent-split capacitor induction motor. For the equivalent circuit, we propose the calculation method of magnetizing reactance according to slip from the circuit equation. Simulation results are compared with experimental results in the characteristics of 4 different models of the motors. The sequential quadratic programming (SQP) is applied to solve the optimal design.","PeriodicalId":176640,"journal":{"name":"1997 IEEE International Electric Machines and Drives Conference Record","volume":"44 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":"114296509","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.1997.604303
K.H. Sueker
The static dynamometer, an apparent oxymoron, is a system which allows full load testing of variable frequency motor drives with no rotating equipment and only minimal demand from the power line. By inserting a reactor between the drive output and the line from which it is powered, the drive can be made to appear as a synchronous generator. This arrangement offers a practical alternative to the motor-generator sets usually employed for load testing. The required equipment consists of a set of power reactors approximating 10% of the drive rating, a contactor and a phase locked loop circuit for regulating the drive phase relative to the line. The static dynamometer is in production use on variable speed drives from 20 to 5000 hp and 480 to 4160 V. There are no intrinsic limits to either power or voltage for its application.
{"title":"A static dynamometer for load testing large variable frequency motor drives","authors":"K.H. Sueker","doi":"10.1109/IEMDC.1997.604303","DOIUrl":"https://doi.org/10.1109/IEMDC.1997.604303","url":null,"abstract":"The static dynamometer, an apparent oxymoron, is a system which allows full load testing of variable frequency motor drives with no rotating equipment and only minimal demand from the power line. By inserting a reactor between the drive output and the line from which it is powered, the drive can be made to appear as a synchronous generator. This arrangement offers a practical alternative to the motor-generator sets usually employed for load testing. The required equipment consists of a set of power reactors approximating 10% of the drive rating, a contactor and a phase locked loop circuit for regulating the drive phase relative to the line. The static dynamometer is in production use on variable speed drives from 20 to 5000 hp and 480 to 4160 V. There are no intrinsic limits to either power or voltage for its application.","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":"125105584","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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