Pub Date : 1997-02-23DOI: 10.1109/APEC.1997.575720
Se-Kyo Chung, Hyun-Soo Kim, Chang-Gyun Kim, M. Youn
A new instantaneous torque control strategy is presented for the high performance control of a permanent magnet synchronous motor. In order to deal with the torque pulsation problem of the PM synchronous motor in the low-speed region, new torque estimation and control techniques are proposed. The linkage flux of the PM synchronous motor is estimated using a model reference adaptive control system technique and the developed torque of the motor is instantaneously controlled by a torque controller combining variable structure control with space vector PWM. The proposed control scheme provides the advantage of reducing the torque pulsation caused by the nonsinusoidal flux distribution of the motor. This control strategy is applied to a high torque PM synchronous motor drive system for direct drive applications and implemented by using a software of the DSP TMS320C30. Computer simulations and experiments are carried out for this system and the results demonstrate well the effectiveness of the proposed control strategy.
{"title":"A new instantaneous torque control of PM synchronous motor for high performance direct drive applications","authors":"Se-Kyo Chung, Hyun-Soo Kim, Chang-Gyun Kim, M. Youn","doi":"10.1109/APEC.1997.575720","DOIUrl":"https://doi.org/10.1109/APEC.1997.575720","url":null,"abstract":"A new instantaneous torque control strategy is presented for the high performance control of a permanent magnet synchronous motor. In order to deal with the torque pulsation problem of the PM synchronous motor in the low-speed region, new torque estimation and control techniques are proposed. The linkage flux of the PM synchronous motor is estimated using a model reference adaptive control system technique and the developed torque of the motor is instantaneously controlled by a torque controller combining variable structure control with space vector PWM. The proposed control scheme provides the advantage of reducing the torque pulsation caused by the nonsinusoidal flux distribution of the motor. This control strategy is applied to a high torque PM synchronous motor drive system for direct drive applications and implemented by using a software of the DSP TMS320C30. Computer simulations and experiments are carried out for this system and the results demonstrate well the effectiveness of the proposed control strategy.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123169859","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 : 1997-02-23DOI: 10.1109/APEC.1997.575767
L. Rossetto, G. Spiazzi
The instability of the input capacitors midpoint voltage in the half-bridge topology observed using peak current-mode control is investigated and a simple solution, which does not require any modification of the converter power stage, is proposed. As far as voltage-mode control is concerned, a novel multi-loop control allows synthesis of the desired regulator transfer function by using only low-pass filters, thus reducing the high-frequency noise coupling typical of standard PID regulators and reducing the dependency of crossover frequency and phase margin on output capacitor ESR. In the paper, useful design considerations are given and verified with an experimental prototype.
{"title":"Design considerations on current-mode and voltage-mode control methods for half-bridge converters","authors":"L. Rossetto, G. Spiazzi","doi":"10.1109/APEC.1997.575767","DOIUrl":"https://doi.org/10.1109/APEC.1997.575767","url":null,"abstract":"The instability of the input capacitors midpoint voltage in the half-bridge topology observed using peak current-mode control is investigated and a simple solution, which does not require any modification of the converter power stage, is proposed. As far as voltage-mode control is concerned, a novel multi-loop control allows synthesis of the desired regulator transfer function by using only low-pass filters, thus reducing the high-frequency noise coupling typical of standard PID regulators and reducing the dependency of crossover frequency and phase margin on output capacitor ESR. In the paper, useful design considerations are given and verified with an experimental prototype.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115272054","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 : 1997-02-23DOI: 10.1109/APEC.1997.575628
W. Sarjeant, D. Staffiere
As consumer and industrial requirements for compact, high power density, electrical power systems grow substantially over the next decade, development of high power/energy density capacitor technology is a major enabling technology component element. This paper describes the results of a continuing study of the Power Sources Manufacturer's Association Capacitor R&D Committee of capacitor technologies for microsecond to fractional-second electrical energy storage, discharge, filtering and power conditioning applications. For such applications, capacitor technology is unequalled in flexibility and adaptability to meet a broad range of requirements in the future.
{"title":"Capacitors as an element in advanced power sources in power electronics systems","authors":"W. Sarjeant, D. Staffiere","doi":"10.1109/APEC.1997.575628","DOIUrl":"https://doi.org/10.1109/APEC.1997.575628","url":null,"abstract":"As consumer and industrial requirements for compact, high power density, electrical power systems grow substantially over the next decade, development of high power/energy density capacitor technology is a major enabling technology component element. This paper describes the results of a continuing study of the Power Sources Manufacturer's Association Capacitor R&D Committee of capacitor technologies for microsecond to fractional-second electrical energy storage, discharge, filtering and power conditioning applications. For such applications, capacitor technology is unequalled in flexibility and adaptability to meet a broad range of requirements in the future.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"77 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132564251","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 : 1997-02-23DOI: 10.1109/APEC.1997.575744
Pascual, P. Krein
A clocked switched-capacitor circuit can exchange charge between adjacent batteries in a series string. This exchange drives all batteries to identical voltages, without regard to component values, battery technology, or state of charge. This equalization process can proceed while the batteries are in use or under charge, or separately. Transformer-based and transformerless implementations are given, and results of experimental tests are provided. The process is much faster and less stressful than the conventional approach, and is simpler than some active approaches.
{"title":"Switched capacitor system for automatic series battery equalization","authors":"Pascual, P. Krein","doi":"10.1109/APEC.1997.575744","DOIUrl":"https://doi.org/10.1109/APEC.1997.575744","url":null,"abstract":"A clocked switched-capacitor circuit can exchange charge between adjacent batteries in a series string. This exchange drives all batteries to identical voltages, without regard to component values, battery technology, or state of charge. This equalization process can proceed while the batteries are in use or under charge, or separately. Transformer-based and transformerless implementations are given, and results of experimental tests are provided. The process is much faster and less stressful than the conventional approach, and is simpler than some active approaches.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"13 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132331531","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 : 1997-02-23DOI: 10.1109/APEC.1997.575763
J. Barnard, J. Ferreira, J. V. van Wyk
Linear contactless power transmission systems are proposed as alternative power supplies to mobile loads used in harsh environments. Such systems comprise a core with a secondary winding sliding along an extended primary winding. In long applications the transformer primary winding is the most limiting component in the system whereas in short applications the transformer core size is usually the detrimental factor. Formulas to optimize and design sliding transformers for different applications are given. The implementation of these formulas are then illustrated by designs for three different applications. Experimental waveforms for a 5 m, 15 kVA sliding transformer are presented.
{"title":"Optimized linear contactless power transmission systems for different applications","authors":"J. Barnard, J. Ferreira, J. V. van Wyk","doi":"10.1109/APEC.1997.575763","DOIUrl":"https://doi.org/10.1109/APEC.1997.575763","url":null,"abstract":"Linear contactless power transmission systems are proposed as alternative power supplies to mobile loads used in harsh environments. Such systems comprise a core with a secondary winding sliding along an extended primary winding. In long applications the transformer primary winding is the most limiting component in the system whereas in short applications the transformer core size is usually the detrimental factor. Formulas to optimize and design sliding transformers for different applications are given. The implementation of these formulas are then illustrated by designs for three different applications. Experimental waveforms for a 5 m, 15 kVA sliding transformer are presented.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133778619","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 : 1997-02-23DOI: 10.1109/APEC.1997.581428
K.D. Ellacott
Printed circuit board mounted DC-DC power converters, also referred to as point-of-use power supplies (PUPS), are an integral and critical component of products developed and manufactured by Nortel. As a key component, the reliability of these devices has direct impact on quality of product manufactured by Nortel. Many of the converters utilized in Nortel products are standard "off the shelf" commercial units, available from a wide variety of manufacturers. With the proliferation of the use of these devices, former qualification methods had proven incapable of assuring the quality and reliability requirements for a telecom environment. This paper describes the current setup, test, statistical analysis and failure analysis methods used to assess DC-DC power converter design quality and reliability.
{"title":"Qualification testing of DC-DC converters","authors":"K.D. Ellacott","doi":"10.1109/APEC.1997.581428","DOIUrl":"https://doi.org/10.1109/APEC.1997.581428","url":null,"abstract":"Printed circuit board mounted DC-DC power converters, also referred to as point-of-use power supplies (PUPS), are an integral and critical component of products developed and manufactured by Nortel. As a key component, the reliability of these devices has direct impact on quality of product manufactured by Nortel. Many of the converters utilized in Nortel products are standard \"off the shelf\" commercial units, available from a wide variety of manufacturers. With the proliferation of the use of these devices, former qualification methods had proven incapable of assuring the quality and reliability requirements for a telecom environment. This paper describes the current setup, test, statistical analysis and failure analysis methods used to assess DC-DC power converter design quality and reliability.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122457590","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 : 1997-02-23DOI: 10.1109/APEC.1997.581480
S. Ramakrishnan, R. Steigerwald, J. Mallick
The electrical and mechanical issues critical to the design of low-profile power magnetics are discussed. The disk and tube-type designs are evaluated over the frequency range of 0.5-10 MHz by an optimization process to maximize the efficiency for a given foot-print and height. The tube-type transformer is shown to have a higher power density at a lower height than the disk-type transformer, operating at the same efficiency at 1 MHz. The tube-type design allows the fabrication of transformers with heights as low as 50 mils.
{"title":"A comparison study of low-profile power magnetics for high-frequency, high-density switching converters","authors":"S. Ramakrishnan, R. Steigerwald, J. Mallick","doi":"10.1109/APEC.1997.581480","DOIUrl":"https://doi.org/10.1109/APEC.1997.581480","url":null,"abstract":"The electrical and mechanical issues critical to the design of low-profile power magnetics are discussed. The disk and tube-type designs are evaluated over the frequency range of 0.5-10 MHz by an optimization process to maximize the efficiency for a given foot-print and height. The tube-type transformer is shown to have a higher power density at a lower height than the disk-type transformer, operating at the same efficiency at 1 MHz. The tube-type design allows the fabrication of transformers with heights as low as 50 mils.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"78 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128091604","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 : 1997-02-23DOI: 10.1109/APEC.1997.575746
R. Zhang, D. Boroyevich, V. H. Prasad, H. Mao, F. Lee, S. Dubovsky
A three-phase inverter with a neutral leg is presented in this paper, in comparison with a conventional neutral point clamped three-phase inverter with split DC link capacitors, to deal with load unbalance in a high-power rotary standalone power supply system. With the additional neutral leg, the space vector modulation control is much more complex, and there is no precedent literature addressing this issue. In this paper a general definition of space vector in a three-dimensional space is described. Space vector modulation control of this inverter is discussed, as well as design considerations.
{"title":"A three-phase inverter with a neutral leg with space vector modulation","authors":"R. Zhang, D. Boroyevich, V. H. Prasad, H. Mao, F. Lee, S. Dubovsky","doi":"10.1109/APEC.1997.575746","DOIUrl":"https://doi.org/10.1109/APEC.1997.575746","url":null,"abstract":"A three-phase inverter with a neutral leg is presented in this paper, in comparison with a conventional neutral point clamped three-phase inverter with split DC link capacitors, to deal with load unbalance in a high-power rotary standalone power supply system. With the additional neutral leg, the space vector modulation control is much more complex, and there is no precedent literature addressing this issue. In this paper a general definition of space vector in a three-dimensional space is described. Space vector modulation control of this inverter is discussed, as well as design considerations.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130776000","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 : 1997-02-23DOI: 10.1109/APEC.1997.581513
A. Radun, C. Ferreira, E. Richter
Measured data and simulation results for a two channel experimental switched reluctance motor (SRM) based aircraft engine starter/generator system is presented. The two channels of the system provide power to two separate and independent loads. The results presented here document the performance capability of this system from load step response to output ripple voltage. Both measured and predicted system performance is presented and compared. In addition, operating characteristics that are unique to this SRM-based system are described. Of particular interest is the interaction between the two separate channels when one channel experiences a load transient and the other does not. The source of channel interactions is described and measured data are provided. The issue of clearing load faults is also addressed. Design results for adding this capability to the experimental system are described.
{"title":"Two channel switched reluctance starter/generator results","authors":"A. Radun, C. Ferreira, E. Richter","doi":"10.1109/APEC.1997.581513","DOIUrl":"https://doi.org/10.1109/APEC.1997.581513","url":null,"abstract":"Measured data and simulation results for a two channel experimental switched reluctance motor (SRM) based aircraft engine starter/generator system is presented. The two channels of the system provide power to two separate and independent loads. The results presented here document the performance capability of this system from load step response to output ripple voltage. Both measured and predicted system performance is presented and compared. In addition, operating characteristics that are unique to this SRM-based system are described. Of particular interest is the interaction between the two separate channels when one channel experiences a load transient and the other does not. The source of channel interactions is described and measured data are provided. The issue of clearing load faults is also addressed. Design results for adding this capability to the experimental system are described.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131059779","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 : 1997-02-23DOI: 10.1109/APEC.1997.575780
J. Campo, M. Pérez, J. M. Mezquita, J. Sebastian
Xenon flash lamps are one of the brightest light sources available. They are used from simple applications like camera flashes to extremely demanding ones such as photometry, chemical analysis, spectroscopy, etc. A power supply to drive a xenon lamp must provide a substantially high voltage and current, and must provide a controlled high voltage pulse to strike the arc. The influence of the parameters of the power supply and parasitics on light output, stability and lamp life is analyzed in this paper. The experimental results have been evaluated with several types of lamps and with power supplies developed to make them.
{"title":"Circuit-design criteria for improvement of xenon flash-lamp performance (lamp life, light-pulse, narrowness, uniformity of light intensity in a series of flashes)","authors":"J. Campo, M. Pérez, J. M. Mezquita, J. Sebastian","doi":"10.1109/APEC.1997.575780","DOIUrl":"https://doi.org/10.1109/APEC.1997.575780","url":null,"abstract":"Xenon flash lamps are one of the brightest light sources available. They are used from simple applications like camera flashes to extremely demanding ones such as photometry, chemical analysis, spectroscopy, etc. A power supply to drive a xenon lamp must provide a substantially high voltage and current, and must provide a controlled high voltage pulse to strike the arc. The influence of the parameters of the power supply and parasitics on light output, stability and lamp life is analyzed in this paper. The experimental results have been evaluated with several types of lamps and with power supplies developed to make them.","PeriodicalId":423659,"journal":{"name":"Proceedings of APEC 97 - Applied Power Electronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125517344","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：