Pub Date : 1999-03-14DOI: 10.1109/APEC.1999.749494
J. Sebastián, A. Fernández, P. Villegas, M. Hernando, S. Ollero
This paper deals with the design of an AC-to-DC power converter based on a flyback converter which uses the recently proposed active input current shaper (AICS) to reduce the line current harmonics, in order to comply with the IEC 1000-3-2 specifications, maintaining fast response. Several design possibilities have been theoretically and experimentally analyzed in order to achieve low cost, good efficiency and compliance with the regulations.
{"title":"Design of an AC-to-DC converter based on a flyback converter with active input current shaper","authors":"J. Sebastián, A. Fernández, P. Villegas, M. Hernando, S. Ollero","doi":"10.1109/APEC.1999.749494","DOIUrl":"https://doi.org/10.1109/APEC.1999.749494","url":null,"abstract":"This paper deals with the design of an AC-to-DC power converter based on a flyback converter which uses the recently proposed active input current shaper (AICS) to reduce the line current harmonics, in order to comply with the IEC 1000-3-2 specifications, maintaining fast response. Several design possibilities have been theoretically and experimentally analyzed in order to achieve low cost, good efficiency and compliance with the regulations.","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130444381","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 : 1999-03-14DOI: 10.1109/APEC.1999.749728
Xiaoming Yuan, I. Barbi
This paper proposes a zero voltage switching scheme for a three-level capacitor clamping inverter. The small rating auxiliary circuit proposed ensures not only zero voltage switching of the main switches and zero current switching of the auxiliary switches, the clamping voltage of the inverter is also stabilized. The scheme prevents any voltage or current spikes from occurring over the main or auxiliary switches and no modulation constraints are necessary. Operation, analysis, design and testing of the scheme are detailed.
{"title":"Soft-switched three level capacitor clamping inverter with clamping voltage stabilization","authors":"Xiaoming Yuan, I. Barbi","doi":"10.1109/APEC.1999.749728","DOIUrl":"https://doi.org/10.1109/APEC.1999.749728","url":null,"abstract":"This paper proposes a zero voltage switching scheme for a three-level capacitor clamping inverter. The small rating auxiliary circuit proposed ensures not only zero voltage switching of the main switches and zero current switching of the auxiliary switches, the clamping voltage of the inverter is also stabilized. The scheme prevents any voltage or current spikes from occurring over the main or auxiliary switches and no modulation constraints are necessary. Operation, analysis, design and testing of the scheme are detailed.","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130365506","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 : 1999-03-14DOI: 10.1109/APEC.1999.750436
R. Nelms, D. Cahela, R. L. Newsom, B. Tatarchuk
The double-layer capacitor is a very complex device that is best represented by a distributed parameter system. Many different lumped-parameter equivalent circuits have been proposed for the double-layer capacitor. Presented in this paper is a comparison of the classical equivalent circuit and ladder circuits. Parameters for the classical equivalent circuit are determined from in-situ circuit measurements. AC impedance data is acquired for the capacitor and utilized to determine parameters for the ladder circuits. The performance of the two equivalent circuits is evaluated in slow discharge and pulse load applications. In comparison to the ladder circuits, the classical circuit more accurately calculates the capacitor voltage during a slow discharge. In the pulse load application, the classical circuit and a low order ladder circuit predict approximately the same voltage drop measured in the laboratory.
{"title":"A comparison of two equivalent circuits for double-layer capacitors","authors":"R. Nelms, D. Cahela, R. L. Newsom, B. Tatarchuk","doi":"10.1109/APEC.1999.750436","DOIUrl":"https://doi.org/10.1109/APEC.1999.750436","url":null,"abstract":"The double-layer capacitor is a very complex device that is best represented by a distributed parameter system. Many different lumped-parameter equivalent circuits have been proposed for the double-layer capacitor. Presented in this paper is a comparison of the classical equivalent circuit and ladder circuits. Parameters for the classical equivalent circuit are determined from in-situ circuit measurements. AC impedance data is acquired for the capacitor and utilized to determine parameters for the ladder circuits. The performance of the two equivalent circuits is evaluated in slow discharge and pulse load applications. In comparison to the ladder circuits, the classical circuit more accurately calculates the capacitor voltage during a slow discharge. In the pulse load application, the classical circuit and a low order ladder circuit predict approximately the same voltage drop measured in the laboratory.","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"85 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115052600","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 : 1999-03-14DOI: 10.1109/APEC.1999.750470
P. Alou, J. Cobos, J. Uceda, M. Rascon, E. de la Cruz
In this paper, the design and experimental results of a very low output voltage DC/DC converter for a specific telecom application (1.5 V, 10 A) is presented and analyzed. Several topologies have been compared and analyzed, not only from the point of view of size (15 W/inch/sup 3/, 10 mm of height) and efficiency (>85%), but also regarding the dynamic response of the converter to supply pulsating loads (80 A//spl mu/s). A new driving scheme for self-driven synchronous rectification (SDSR) is used. It allows use of the standard half bridge topology, which is very suitable for such a wide input voltage range (36 V-72 V).
{"title":"Design of a low output voltage DC/DC converter for telecom application with a new scheme for self-driven synchronous rectification","authors":"P. Alou, J. Cobos, J. Uceda, M. Rascon, E. de la Cruz","doi":"10.1109/APEC.1999.750470","DOIUrl":"https://doi.org/10.1109/APEC.1999.750470","url":null,"abstract":"In this paper, the design and experimental results of a very low output voltage DC/DC converter for a specific telecom application (1.5 V, 10 A) is presented and analyzed. Several topologies have been compared and analyzed, not only from the point of view of size (15 W/inch/sup 3/, 10 mm of height) and efficiency (>85%), but also regarding the dynamic response of the converter to supply pulsating loads (80 A//spl mu/s). A new driving scheme for self-driven synchronous rectification (SDSR) is used. It allows use of the standard half bridge topology, which is very suitable for such a wide input voltage range (36 V-72 V).","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129719120","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 : 1999-03-14DOI: 10.1109/APEC.1999.749486
R. Kerkman, G. Skibinski, D. Schlegel
The unprecedented growth in industrial motor drives over the past decade resulted from the process improvements demanded by the automation industry. With the increased speed of modern micro-controllers and digital signal processors and the reduced insulated gate bipolar transistor (IGBT) drive package size, coupled with the low maintenance of AC motors, multiple machine configurability has been achieved with minimal process downtime. This progress required significant effort in mitigating numerous technical problems associated with this rapidly expanding technology. The paper reviews the economic trends in the industry, performance enhancements for volts per hertz (V/F) drives and high performance field oriented controllers (FOC), inverter hardware topologies, and IGBT induced system problems and solutions. Finally, the authors look beyond the year 2000 (Y2K) and offer a glimpse at what is possible and practical over the next five years.
{"title":"AC drives: year 2000 (Y2K) and beyond","authors":"R. Kerkman, G. Skibinski, D. Schlegel","doi":"10.1109/APEC.1999.749486","DOIUrl":"https://doi.org/10.1109/APEC.1999.749486","url":null,"abstract":"The unprecedented growth in industrial motor drives over the past decade resulted from the process improvements demanded by the automation industry. With the increased speed of modern micro-controllers and digital signal processors and the reduced insulated gate bipolar transistor (IGBT) drive package size, coupled with the low maintenance of AC motors, multiple machine configurability has been achieved with minimal process downtime. This progress required significant effort in mitigating numerous technical problems associated with this rapidly expanding technology. The paper reviews the economic trends in the industry, performance enhancements for volts per hertz (V/F) drives and high performance field oriented controllers (FOC), inverter hardware topologies, and IGBT induced system problems and solutions. Finally, the authors look beyond the year 2000 (Y2K) and offer a glimpse at what is possible and practical over the next five years.","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129930665","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 : 1999-03-14DOI: 10.1109/APEC.1999.749648
Xunwei Zhou, Bo Yang, L. Amoroso, F. Lee, P. Wong
Most of today's voltage regulator modules (VRMs) draw power from 5 V output of silver box. This bus voltage is too low for future low-voltage high-current processor applications. In the future, a distributed power system (DPS) with high bus voltage can be a solution for computer power systems, like servers' and workstations' systems. In this paper, a novel high-input-voltage VRM, which can be used in high-bus-voltage power systems, is proposed. Experimental results verify that this power converter has high efficiency, high power density and can have fast transient response.
{"title":"A novel high-input-voltage, high efficiency and past transient voltage regulator module-push-pull forward converter","authors":"Xunwei Zhou, Bo Yang, L. Amoroso, F. Lee, P. Wong","doi":"10.1109/APEC.1999.749648","DOIUrl":"https://doi.org/10.1109/APEC.1999.749648","url":null,"abstract":"Most of today's voltage regulator modules (VRMs) draw power from 5 V output of silver box. This bus voltage is too low for future low-voltage high-current processor applications. In the future, a distributed power system (DPS) with high bus voltage can be a solution for computer power systems, like servers' and workstations' systems. In this paper, a novel high-input-voltage VRM, which can be used in high-bus-voltage power systems, is proposed. Experimental results verify that this power converter has high efficiency, high power density and can have fast transient response.","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130321819","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 : 1999-03-14DOI: 10.1109/APEC.1999.749747
F. T. Wakabayashi, C. Canesin
This work presents a new family of DC to DC converters based on a new zero-current-switching (ZCS) pulse-width-modulated (PWM) soft-commutation cell. Two transistors (main and auxiliary switches), two diodes, two small resonant inductors and one resonant capacitor compose this commutation cell, appropriated to operate with insulated-gate bipolar transistors (IGBTs) as the power switches. This new ZCS-PWM cell provides a zero-voltage (ZV) turn-on to the diodes, a zero-current (ZC) turn-on and a zero-current-zero-voltage (ZCZV) turn-off to the transistors. The new family of converters, originated from the proposed ZCS-PWM cell, offers conditions to obtain isolated converters, as example: derived buck-boost, Sepic and Zeta converters. An application of the new commutation cell in a new ZCS-PWM boost rectifier is developed, obtaining a structure with power factor near unity, high efficiency at wide load range and low total harmonic distortion (THD) in the input current. The principle of operation, the theoretical analysis and the design procedure are presented. A design example is developed and experimental results to the new high-power-factor (HPF) ZCS-PWM boost rectifier are presented to verify the theoretical analysis.
{"title":"A new family of zero-current-switching PWM converters and a novel HPF-ZCS-PWM boost rectifier","authors":"F. T. Wakabayashi, C. Canesin","doi":"10.1109/APEC.1999.749747","DOIUrl":"https://doi.org/10.1109/APEC.1999.749747","url":null,"abstract":"This work presents a new family of DC to DC converters based on a new zero-current-switching (ZCS) pulse-width-modulated (PWM) soft-commutation cell. Two transistors (main and auxiliary switches), two diodes, two small resonant inductors and one resonant capacitor compose this commutation cell, appropriated to operate with insulated-gate bipolar transistors (IGBTs) as the power switches. This new ZCS-PWM cell provides a zero-voltage (ZV) turn-on to the diodes, a zero-current (ZC) turn-on and a zero-current-zero-voltage (ZCZV) turn-off to the transistors. The new family of converters, originated from the proposed ZCS-PWM cell, offers conditions to obtain isolated converters, as example: derived buck-boost, Sepic and Zeta converters. An application of the new commutation cell in a new ZCS-PWM boost rectifier is developed, obtaining a structure with power factor near unity, high efficiency at wide load range and low total harmonic distortion (THD) in the input current. The principle of operation, the theoretical analysis and the design procedure are presented. A design example is developed and experimental results to the new high-power-factor (HPF) ZCS-PWM boost rectifier are presented to verify the theoretical analysis.","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131009715","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 : 1999-03-14DOI: 10.1109/APEC.1999.749716
M. Rayan, M. Mansour, M. El-Sayad, M. Morsy
The design and implementation of a closed loop speed controller for a variable reluctance motor (VRM) is presented. A proportional plus integral (PI) control approach is used. The control approach is developed to operate at minimum drive losses and to allow the controller to follow large changes in speed required as well as load disturbances. The controller shows stable operations in all real-time testing conditions.
{"title":"Implementation and testing of a digital controller for variable reluctance motor","authors":"M. Rayan, M. Mansour, M. El-Sayad, M. Morsy","doi":"10.1109/APEC.1999.749716","DOIUrl":"https://doi.org/10.1109/APEC.1999.749716","url":null,"abstract":"The design and implementation of a closed loop speed controller for a variable reluctance motor (VRM) is presented. A proportional plus integral (PI) control approach is used. The control approach is developed to operate at minimum drive losses and to allow the controller to follow large changes in speed required as well as load disturbances. The controller shows stable operations in all real-time testing conditions.","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133717852","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 : 1999-03-14DOI: 10.1109/APEC.1999.749724
In-Seon Yeo, Dong-Ho Lee, Sang-Bin Song
A simple circuit of an electronic starter for fluorescent lamps is proposed which enables single-pulse ignition and safe-guarded re-striking features. It is possible to protect a switching device from overheating due to repeated restriking at the end of lamp life. Furthermore, recovered ignition is possible through an optimum selection of circuit parameters. These advanced features can be simultaneously obtained with an addition of a simple R-C timer circuit into a re-striking circuit. So, a practical and reliable electronic starter can be achieved with a minimal cost. Experimental results on its performance show that MOSFET switching with a half-wave preheating current can ignite a fluorescent lamp of 20/spl sim/40 W within 0.5 s on 220 V mains voltage. During the switching endurance test performed over 30000 cycles no blackening of a lamp nor burn-out of the starter has been reported.
{"title":"A simple electronic starter capable of end-of-life protection for fluorescent lamps","authors":"In-Seon Yeo, Dong-Ho Lee, Sang-Bin Song","doi":"10.1109/APEC.1999.749724","DOIUrl":"https://doi.org/10.1109/APEC.1999.749724","url":null,"abstract":"A simple circuit of an electronic starter for fluorescent lamps is proposed which enables single-pulse ignition and safe-guarded re-striking features. It is possible to protect a switching device from overheating due to repeated restriking at the end of lamp life. Furthermore, recovered ignition is possible through an optimum selection of circuit parameters. These advanced features can be simultaneously obtained with an addition of a simple R-C timer circuit into a re-striking circuit. So, a practical and reliable electronic starter can be achieved with a minimal cost. Experimental results on its performance show that MOSFET switching with a half-wave preheating current can ignite a fluorescent lamp of 20/spl sim/40 W within 0.5 s on 220 V mains voltage. During the switching endurance test performed over 30000 cycles no blackening of a lamp nor burn-out of the starter has been reported.","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132178205","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 : 1999-03-14DOI: 10.1109/APEC.1999.750483
L. Grzesiak, W. Koczara, P. Pośpiech, M. D. da Ponte
The Hygen off-grid adjustable-speed load-adaptive generating system produces standard AC 50 Hz, 230 V RMS voltage for common applications- and for very sensitive loads. A permanent magnet generator generates a variable voltage and variable frequency which is converted by an AC/DC/AC power electronic system. The system provides an uninterruptible high quality output voltage under the most adverse load conditions-large step/impact loads, nonlinear loads and arc welding machines. Experimental results produced by Volt Ampere confirm the high quality of the output voltage.
Hygen离网调速负载自适应发电系统为常见应用和非常敏感的负载产生标准交流50 Hz, 230 V RMS电压。永磁发电机产生可变电压和可变频率，通过交流/直流/交流电力电子系统进行转换。该系统在最不利的负载条件下提供不间断的高质量输出电压-大阶跃/冲击负载，非线性负载和弧焊机。伏安产生的实验结果证实了输出电压的高质量。
{"title":"Power quality of the Hygen autonomous load-adaptive adjustable-speed generating system","authors":"L. Grzesiak, W. Koczara, P. Pośpiech, M. D. da Ponte","doi":"10.1109/APEC.1999.750483","DOIUrl":"https://doi.org/10.1109/APEC.1999.750483","url":null,"abstract":"The Hygen off-grid adjustable-speed load-adaptive generating system produces standard AC 50 Hz, 230 V RMS voltage for common applications- and for very sensitive loads. A permanent magnet generator generates a variable voltage and variable frequency which is converted by an AC/DC/AC power electronic system. The system provides an uninterruptible high quality output voltage under the most adverse load conditions-large step/impact loads, nonlinear loads and arc welding machines. Experimental results produced by Volt Ampere confirm the high quality of the output voltage.","PeriodicalId":287192,"journal":{"name":"APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)","volume":"69 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130146966","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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