Pub Date : 1999-12-01DOI: 10.1109/PESC.1999.785645
J. Rodríguez, L. Morán, A. González, C. Silva
This paper presents a multilevel converter with regeneration capability. The converter is based on the series connection of several power cells, each working with reduced voltage and with an active front end at the line side. This paper presents the control method of each cell, the use of phase-shifting techniques to reduce the current distortion and criteria to select the connection of the cells. The converter generates practically sinusoidal currents at the load and at the input and works with very high power factor.
{"title":"High voltage multilevel converter with regeneration capability","authors":"J. Rodríguez, L. Morán, A. González, C. Silva","doi":"10.1109/PESC.1999.785645","DOIUrl":"https://doi.org/10.1109/PESC.1999.785645","url":null,"abstract":"This paper presents a multilevel converter with regeneration capability. The converter is based on the series connection of several power cells, each working with reduced voltage and with an active front end at the line side. This paper presents the control method of each cell, the use of phase-shifting techniques to reduce the current distortion and criteria to select the connection of the cells. The converter generates practically sinusoidal currents at the load and at the input and works with very high power factor.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126720398","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 : 1999-12-01DOI: 10.1109/PESC.1999.789045
F. T. Wakabayashi, M. Bonato, C. Canesin
This paper presents a new family of DC/DC pulse-width-modulated (PWM) converters, featuring soft-commutation at zero-current (ZC) in the active switches. The new ZCS-PWM boost and new ZCS-PWM Zeta converters, both based on the new ZCS-PWM soft-commutation cell proposed, are used as examples to illustrate the operation of the new family of converters. This soft-commutation cell proposed is composed of two active switches (main and auxiliary transistors), two diodes, two small resonant inductors and one resonant capacitor. In this cell, the turn-on of the active switches occurs in zero-current (ZC) and they turn off in zero-current and zero-voltage (ZCZV). For the diodes, their turn-on processes occur in zero-voltage (ZV) and the reverse-recovery effects of them are eliminated. These characteristics makes this cell suitable for insulated-gate bipolar transistors (IGBTs). The family of DC/DC converters, generated based on this new soft-commutation cell, provides conditions to obtain naturally isolated converters, as an example: derived buck-boost, Sepic and Zeta converters. The principle of operation, the theoretical analysis, a design example for the new boost DC/DC converter and experimental results for a test unit with 1.6 kW output power, 400 V/sub dc/ output voltage, 220 V/sub dc/ input voltage, operating with 20 kHz switching frequency, are presented. Its measured efficiency is equal to 98.1% at rated load. Also presented is the principle of operation, the theoretical analysis and a design example for the new Zeta DC/DC step-down converter.
{"title":"A new family of zero-current-switching PWM converter","authors":"F. T. Wakabayashi, M. Bonato, C. Canesin","doi":"10.1109/PESC.1999.789045","DOIUrl":"https://doi.org/10.1109/PESC.1999.789045","url":null,"abstract":"This paper presents a new family of DC/DC pulse-width-modulated (PWM) converters, featuring soft-commutation at zero-current (ZC) in the active switches. The new ZCS-PWM boost and new ZCS-PWM Zeta converters, both based on the new ZCS-PWM soft-commutation cell proposed, are used as examples to illustrate the operation of the new family of converters. This soft-commutation cell proposed is composed of two active switches (main and auxiliary transistors), two diodes, two small resonant inductors and one resonant capacitor. In this cell, the turn-on of the active switches occurs in zero-current (ZC) and they turn off in zero-current and zero-voltage (ZCZV). For the diodes, their turn-on processes occur in zero-voltage (ZV) and the reverse-recovery effects of them are eliminated. These characteristics makes this cell suitable for insulated-gate bipolar transistors (IGBTs). The family of DC/DC converters, generated based on this new soft-commutation cell, provides conditions to obtain naturally isolated converters, as an example: derived buck-boost, Sepic and Zeta converters. The principle of operation, the theoretical analysis, a design example for the new boost DC/DC converter and experimental results for a test unit with 1.6 kW output power, 400 V/sub dc/ output voltage, 220 V/sub dc/ input voltage, operating with 20 kHz switching frequency, are presented. Its measured efficiency is equal to 98.1% at rated load. Also presented is the principle of operation, the theoretical analysis and a design example for the new Zeta DC/DC step-down converter.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125703165","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 : 1999-12-01DOI: 10.1109/PESC.1999.785635
L.E. Amaya, P. Krein
A generic switching model is presented, that can be used for representing any type of power converter. The rules to build complex converters using simpler ones as building blocks are presented; DC-DC converters are used as examples. The use of this model as an analysis and synthesis tool is proposed.
{"title":"A generic power converter modeling method to support computer-aided design and synthesis","authors":"L.E. Amaya, P. Krein","doi":"10.1109/PESC.1999.785635","DOIUrl":"https://doi.org/10.1109/PESC.1999.785635","url":null,"abstract":"A generic switching model is presented, that can be used for representing any type of power converter. The rules to build complex converters using simpler ones as building blocks are presented; DC-DC converters are used as examples. The use of this model as an analysis and synthesis tool is proposed.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117148283","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 : 1999-12-01DOI: 10.1109/PESC.1999.788985
M. Chow, C. Tse, Yim-Shu Lee
Conventional PFC power supplies employ two cascading stages that deal separately with PFC and voltage regulation. Since power is processed serially by two power stages, the efficiency is limited. In this paper a PFC power supply with improved efficiency is proposed. This circuit makes use of a parallel configuration that reduces unnecessary processing of all power by two stages serially. The circuit is derived from consideration of the power flow between the input, the load and the storage capacitor. A specific circuit implementation is described and the test results are reported.
{"title":"An efficient PFC voltage regulator with reduced redundant power processing","authors":"M. Chow, C. Tse, Yim-Shu Lee","doi":"10.1109/PESC.1999.788985","DOIUrl":"https://doi.org/10.1109/PESC.1999.788985","url":null,"abstract":"Conventional PFC power supplies employ two cascading stages that deal separately with PFC and voltage regulation. Since power is processed serially by two power stages, the efficiency is limited. In this paper a PFC power supply with improved efficiency is proposed. This circuit makes use of a parallel configuration that reduces unnecessary processing of all power by two stages serially. The circuit is derived from consideration of the power flow between the input, the load and the storage capacitor. A specific circuit implementation is described and the test results are reported.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128215880","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 : 1999-07-01DOI: 10.1109/PESC.1999.785653
J. Espí, E. Dede, E. Navarro, E. Sanchis, A. Ferreres
In this paper the main advantages of the L-LC resonant inverter for induction heating over the conventional voltage-fed SRI are presented: its lower transformer current levels and its short-circuit capability. The design algorithm of the L-LC is presented, and the transformation equations which allow the conversion of the SRI into the equivalent L-LC are deduced, guaranteeing the same working frequency and power dissipation with the same inverter, heating coil and piece. Experimental results are also presented, showing the continuous and reliable behavior of the inverter during the short-circuit.
{"title":"Features and design of the voltage-fed L-LC resonant inverter for induction heating","authors":"J. Espí, E. Dede, E. Navarro, E. Sanchis, A. Ferreres","doi":"10.1109/PESC.1999.785653","DOIUrl":"https://doi.org/10.1109/PESC.1999.785653","url":null,"abstract":"In this paper the main advantages of the L-LC resonant inverter for induction heating over the conventional voltage-fed SRI are presented: its lower transformer current levels and its short-circuit capability. The design algorithm of the L-LC is presented, and the transformation equations which allow the conversion of the SRI into the equivalent L-LC are deduced, guaranteeing the same working frequency and power dissipation with the same inverter, heating coil and piece. Experimental results are also presented, showing the continuous and reliable behavior of the inverter during the short-circuit.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124914333","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 : 1999-07-01DOI: 10.1109/PESC.1999.785595
W. Chen, Fred C. Lee, X. Zhou, Peng Xu
Compact, high-efficiency, low-voltage and large-current DC/DC power converters with a fast transient slew rate are needed for future generation microprocessors. The interleaved quasi-square-wave (QSW) topology is a good candidate to improve their transient response significantly. Inductors are critical components in these converters. An integrated planar inductor scheme for multi-module interleaved QSW power converters is proposed. This integrated inductor utilizes the phase relationships of the currents in each module to integrate all the separate inductors for each module into one core, resulting in great reductions in the size and power losses of the inductor.
{"title":"Integrated planar inductor scheme for multi-module interleaved quasi-square-wave (QSW) DC/DC converter","authors":"W. Chen, Fred C. Lee, X. Zhou, Peng Xu","doi":"10.1109/PESC.1999.785595","DOIUrl":"https://doi.org/10.1109/PESC.1999.785595","url":null,"abstract":"Compact, high-efficiency, low-voltage and large-current DC/DC power converters with a fast transient slew rate are needed for future generation microprocessors. The interleaved quasi-square-wave (QSW) topology is a good candidate to improve their transient response significantly. Inductors are critical components in these converters. An integrated planar inductor scheme for multi-module interleaved QSW power converters is proposed. This integrated inductor utilizes the phase relationships of the currents in each module to integrate all the separate inductors for each module into one core, resulting in great reductions in the size and power losses of the inductor.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122115941","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 : 1999-07-01DOI: 10.1109/PESC.1999.785579
X. Yuan, H. Stemmler, I. Barbi
This paper evaluates the topological variants of the soft switching NPC inverter based on the resonant pole techniques. Conventional dissipative and regenerative snubbers as well as soft switching techniques for NPC inverter discussed in the past decade are reviewed first. The auxiliary-resonant-commutated-pole-inverter (ARCPI) is compared to a newly proposed transformer assisted resonant pole inverter next. Both techniques are extended to NPC inverter and multilevel inverter, the features of the resultant soft switching schemes are identified and compared. Experimental results from a 7 kW half-bridge transformer assisted PWM zero voltage switching NPC inverter are given in the end.
{"title":"Evaluation of soft switching techniques for the neutral-point-clamped (NPC) inverter","authors":"X. Yuan, H. Stemmler, I. Barbi","doi":"10.1109/PESC.1999.785579","DOIUrl":"https://doi.org/10.1109/PESC.1999.785579","url":null,"abstract":"This paper evaluates the topological variants of the soft switching NPC inverter based on the resonant pole techniques. Conventional dissipative and regenerative snubbers as well as soft switching techniques for NPC inverter discussed in the past decade are reviewed first. The auxiliary-resonant-commutated-pole-inverter (ARCPI) is compared to a newly proposed transformer assisted resonant pole inverter next. Both techniques are extended to NPC inverter and multilevel inverter, the features of the resultant soft switching schemes are identified and compared. Experimental results from a 7 kW half-bridge transformer assisted PWM zero voltage switching NPC inverter are given in the end.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130520803","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 : 1999-07-01DOI: 10.1109/PESC.1999.788976
M. Corley, J. Locker, S. Dutton, R. Spée
Many industrial plants rely on adjustable speed drives (ASD) for critical applications. However, most are susceptible to power disturbances, especially voltage sags and momentary interruptions. ASD tripping in process industries can be very costly due to loss of product as well as production down time. This paper presents a 100 kW, 5-second ride-through system (RTS) for ASDs using ultracapacitors for energy storage.
{"title":"Ultracapacitor-based ride-through system for adjustable speed drives","authors":"M. Corley, J. Locker, S. Dutton, R. Spée","doi":"10.1109/PESC.1999.788976","DOIUrl":"https://doi.org/10.1109/PESC.1999.788976","url":null,"abstract":"Many industrial plants rely on adjustable speed drives (ASD) for critical applications. However, most are susceptible to power disturbances, especially voltage sags and momentary interruptions. ASD tripping in process industries can be very costly due to loss of product as well as production down time. This paper presents a 100 kW, 5-second ride-through system (RTS) for ASDs using ultracapacitors for energy storage.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116881276","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 : 1999-07-01DOI: 10.1109/PESC.1999.785602
N. Vázquez, J. Almazan, J. Alvarez, C. Aguilar, J. Arau
In this paper, the analysis and experimental study of three kinds of inverters are presented, beginning with the traditional full bridge buck inverter, followed by two different inverter approaches, the boost and buck boost ones. This last two converters have the property of produce an output voltage higher or lower than the input voltage additionally to its inversion capability, which is a desired characteristic to some applications. The paper includes a semiconductor device stress study of the different inverter approaches additionally to the analysis and experimental results of the converters. The control strategy used for all the converters is the sliding mode control in order to introduce a good dynamic response for the closed loop system.
{"title":"Analysis and experimental study of the buck, boost and buck-boost inverters","authors":"N. Vázquez, J. Almazan, J. Alvarez, C. Aguilar, J. Arau","doi":"10.1109/PESC.1999.785602","DOIUrl":"https://doi.org/10.1109/PESC.1999.785602","url":null,"abstract":"In this paper, the analysis and experimental study of three kinds of inverters are presented, beginning with the traditional full bridge buck inverter, followed by two different inverter approaches, the boost and buck boost ones. This last two converters have the property of produce an output voltage higher or lower than the input voltage additionally to its inversion capability, which is a desired characteristic to some applications. The paper includes a semiconductor device stress study of the different inverter approaches additionally to the analysis and experimental results of the converters. The control strategy used for all the converters is the sliding mode control in order to introduce a good dynamic response for the closed loop system.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114285088","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 : 1999-07-01DOI: 10.1109/PESC.1999.785572
N. Celanovic, D. Lee, D. Peng, D. Borojevic, F. Lee
This paper describes the control design of the power processing system for superconductive magnetic energy storage (SMES). The proposed SMES power-processing system consists of series connection of a three-level voltage source inverter and a three-level chopper. The control design enables stable high-bandwidth control of power transfer to and from the SMES coil. The issues of series connection of power converters are discussed. Theoretical analysis of the controller design and experimental results are presented.
{"title":"Control design of three-level voltage source inverter for SMES power conditioning system","authors":"N. Celanovic, D. Lee, D. Peng, D. Borojevic, F. Lee","doi":"10.1109/PESC.1999.785572","DOIUrl":"https://doi.org/10.1109/PESC.1999.785572","url":null,"abstract":"This paper describes the control design of the power processing system for superconductive magnetic energy storage (SMES). The proposed SMES power-processing system consists of series connection of a three-level voltage source inverter and a three-level chopper. The control design enables stable high-bandwidth control of power transfer to and from the SMES coil. The issues of series connection of power converters are discussed. Theoretical analysis of the controller design and experimental results are presented.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125353243","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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