Pub Date : 1999-06-27DOI: 10.1109/PESC.1999.785660
F. Jenni, H. Boksberger, G. Irminger
The power pulsation of a single phase 1 MVA-3 Hz power supply, has to be kept off the mains. The analysis of the DC/DC converter in conjunction with the DC-link reveals a partially unstable system. A robust control scheme for the smallest possible current pulsation is presented.
{"title":"DC-link control for a 1 MVA-3 Hz single phase power supply","authors":"F. Jenni, H. Boksberger, G. Irminger","doi":"10.1109/PESC.1999.785660","DOIUrl":"https://doi.org/10.1109/PESC.1999.785660","url":null,"abstract":"The power pulsation of a single phase 1 MVA-3 Hz power supply, has to be kept off the mains. The analysis of the DC/DC converter in conjunction with the DC-link reveals a partially unstable system. A robust control scheme for the smallest possible current pulsation is presented.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130466275","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 : 1999-06-27DOI: 10.1109/PESC.1999.785578
Y. Konishi, M. Ishibashi, M. Nakaoka
In this paper, a newly-proposed three-phase current-fed zero current soft switching PWM converter using a new switched capacitor type resonant DC link (RDCL) circuit is described, which is basically operated by the new conceptual optimum PWM pattern for efficient high-power utilization. The working principle, design approach and operating performances of this converter suitable for large capacity applications in industry are discussed. The effectiveness of this soft-switching optimum PWM converter with sinewave current shaping and unity power factor correction schemes is proved on the basis of experimental results.
{"title":"Three-phase current-fed soft switching PWM converter with switched capacitor type resonance DC link","authors":"Y. Konishi, M. Ishibashi, M. Nakaoka","doi":"10.1109/PESC.1999.785578","DOIUrl":"https://doi.org/10.1109/PESC.1999.785578","url":null,"abstract":"In this paper, a newly-proposed three-phase current-fed zero current soft switching PWM converter using a new switched capacitor type resonant DC link (RDCL) circuit is described, which is basically operated by the new conceptual optimum PWM pattern for efficient high-power utilization. The working principle, design approach and operating performances of this converter suitable for large capacity applications in industry are discussed. The effectiveness of this soft-switching optimum PWM converter with sinewave current shaping and unity power factor correction schemes is proved on the basis of experimental results.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126269225","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 : 1999-06-27DOI: 10.1109/PESC.1999.785589
S. Alepuz, J. Bordonau, J. Peracaula
The dynamic characteristics of three-level voltage-source inverters are analyzed, in order to control the power delivered to the load in closed-loop operation. A model of the three-level voltage-source inverter is presented. The dynamics of the complete system is considered, including the DC-link and the load side. The model uses D-Q transformation. An open-loop dynamic analysis is done first. An LQR controller is designed to improve the dynamic response of the system for the closed-loop operation. The simulation results confirm the improvement of dynamic behavior in closed-loop operation.
{"title":"Dynamic analysis of three-level voltage-source inverters applied to power regulation","authors":"S. Alepuz, J. Bordonau, J. Peracaula","doi":"10.1109/PESC.1999.785589","DOIUrl":"https://doi.org/10.1109/PESC.1999.785589","url":null,"abstract":"The dynamic characteristics of three-level voltage-source inverters are analyzed, in order to control the power delivered to the load in closed-loop operation. A model of the three-level voltage-source inverter is presented. The dynamics of the complete system is considered, including the DC-link and the load side. The model uses D-Q transformation. An open-loop dynamic analysis is done first. An LQR controller is designed to improve the dynamic response of the system for the closed-loop operation. The simulation results confirm the improvement of dynamic behavior in closed-loop operation.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127862406","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 : 1999-06-27DOI: 10.1109/PESC.1999.789018
P.J.M. Menegaz, M. A. Có, D. Simonetti, J.L.F. Vieira
This paper presents an improved ZVT DC-DC boost power converter using a regenerative snubber. The proposed snubber uses a magnetically coupled cell to reduce the turn-off switching loss of the auxiliary switch. The method has been employed to build a 500 W/100 kHz prototype. The experimental results show the ZVT DC-DC boost converter waveforms with and without the regenerative snubber. A high efficiency is achieved using the proposed improvement.
{"title":"Improving the operation of ZVT DC-DC converters","authors":"P.J.M. Menegaz, M. A. Có, D. Simonetti, J.L.F. Vieira","doi":"10.1109/PESC.1999.789018","DOIUrl":"https://doi.org/10.1109/PESC.1999.789018","url":null,"abstract":"This paper presents an improved ZVT DC-DC boost power converter using a regenerative snubber. The proposed snubber uses a magnetically coupled cell to reduce the turn-off switching loss of the auxiliary switch. The method has been employed to build a 500 W/100 kHz prototype. The experimental results show the ZVT DC-DC boost converter waveforms with and without the regenerative snubber. A high efficiency is achieved using the proposed improvement.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124445945","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 : 1999-06-27DOI: 10.1109/PESC.1999.785629
Jae-Young Choi, D. Boroyevich, F. Lee
This paper proposes a novel zero-voltage transition (ZVT) topology applied to a three-phase inverter. This topology, including only two auxiliary switches, can achieve the zero-voltage turn-on of main switches as well as the zero-current turn-off of auxiliary switches. The modified space-vector modulation (SVM) is introduced to make the zero voltage turn-on possible in any switching condition. The simulation and test results show the improved switching characteristics and the reduced losses compared to the hard-switching and the conventional ZVT with two switches in three-phase inverters.
{"title":"A novel ZVT three-phase inverter with coupled inductors","authors":"Jae-Young Choi, D. Boroyevich, F. Lee","doi":"10.1109/PESC.1999.785629","DOIUrl":"https://doi.org/10.1109/PESC.1999.785629","url":null,"abstract":"This paper proposes a novel zero-voltage transition (ZVT) topology applied to a three-phase inverter. This topology, including only two auxiliary switches, can achieve the zero-voltage turn-on of main switches as well as the zero-current turn-off of auxiliary switches. The modified space-vector modulation (SVM) is introduced to make the zero voltage turn-on possible in any switching condition. The simulation and test results show the improved switching characteristics and the reduced losses compared to the hard-switching and the conventional ZVT with two switches in three-phase inverters.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124540463","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 : 1999-06-27DOI: 10.1109/PESC.1999.785585
G. Zhu, H. Wei, C. Iannello, I. Batarseh
A large signal simulation for two parallel converters in a distributed power supply system is presented in this paper. The distributed system is composed of switched-mode power factor correction (PFC) converters utilizing a central limit control technique. This technique allows one voltage loop compensator to be shared by all the PFC converters. Design of such a compensator is discussed and the system performances with regard to unequal cable resistances and load changes are reported. The resulting system achieves a power factor of about 0.98 and provides an excellent current sharing between the two converter modules.
{"title":"Closed-loop design for two parallel connected converters with power factor correction","authors":"G. Zhu, H. Wei, C. Iannello, I. Batarseh","doi":"10.1109/PESC.1999.785585","DOIUrl":"https://doi.org/10.1109/PESC.1999.785585","url":null,"abstract":"A large signal simulation for two parallel converters in a distributed power supply system is presented in this paper. The distributed system is composed of switched-mode power factor correction (PFC) converters utilizing a central limit control technique. This technique allows one voltage loop compensator to be shared by all the PFC converters. Design of such a compensator is discussed and the system performances with regard to unequal cable resistances and load changes are reported. The resulting system achieves a power factor of about 0.98 and provides an excellent current sharing between the two converter modules.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114272677","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 : 1999-06-27DOI: 10.1109/PESC.1999.785636
P. Maranesi, A. Monti, A. Rampoldi, M. Riva
The computer simulation of large signal transients in switching power electronic converters (SPEC) has not found a satisfactory solution yet. By means of popular software tools such as SPICE, the analysis in the time domain of nonlinear feedback systems is time consuming and often impractical; the recourse to mathematical symbolic descriptions, according to a copious literature, generally implies heavy preparation phases to express in matricial terms the circuit topological characteristics. Instead, small signal modeling, and dynamic responses forecast of SPECs has already found computer aids easy and fast to apply. Just such an automatic small signal analysis tool, Fredomsim, has been used, as described in the paper, to make the large signal dynamic simulation more affordable and convenient. In fact, it directly provides small signal state space matrices, and from these, the matrices required in the overall nonlinear description formulae are automatically derived. The new method is illustrated by an example.
{"title":"Automatic synthesis of large signal models for power electronic circuits","authors":"P. Maranesi, A. Monti, A. Rampoldi, M. Riva","doi":"10.1109/PESC.1999.785636","DOIUrl":"https://doi.org/10.1109/PESC.1999.785636","url":null,"abstract":"The computer simulation of large signal transients in switching power electronic converters (SPEC) has not found a satisfactory solution yet. By means of popular software tools such as SPICE, the analysis in the time domain of nonlinear feedback systems is time consuming and often impractical; the recourse to mathematical symbolic descriptions, according to a copious literature, generally implies heavy preparation phases to express in matricial terms the circuit topological characteristics. Instead, small signal modeling, and dynamic responses forecast of SPECs has already found computer aids easy and fast to apply. Just such an automatic small signal analysis tool, Fredomsim, has been used, as described in the paper, to make the large signal dynamic simulation more affordable and convenient. In fact, it directly provides small signal state space matrices, and from these, the matrices required in the overall nonlinear description formulae are automatically derived. The new method is illustrated by an example.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124241351","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 : 1999-06-27DOI: 10.1109/PESC.1999.785658
Zaohong Yang, P. C. Sen
This paper presents a novel current mode control technique for DC-to-DC buck converters to provide dynamic robustness. The inductor current and the diode current are fedback and combined in a specially nonlinear way which makes the average inductor current proportional to the current control signal and only determined by the current control signal. Stability analysis is performed by the root-locus method, which reveals that the current control loop is inherently stable. When the voltage feedback loop is closed, the output of the voltage error amplifier is used as the control signal. A PI controller is used to regulate the output voltage. The audio susceptibility and closed loop output impedance are presented. Experimental results demonstrate that the inductor current is not affected by large disturbances in supply voltage or output load and the buck converter with the proposed current mode control exhibits excellent performance.
{"title":"DC-to-DC buck converters with novel current mode control","authors":"Zaohong Yang, P. C. Sen","doi":"10.1109/PESC.1999.785658","DOIUrl":"https://doi.org/10.1109/PESC.1999.785658","url":null,"abstract":"This paper presents a novel current mode control technique for DC-to-DC buck converters to provide dynamic robustness. The inductor current and the diode current are fedback and combined in a specially nonlinear way which makes the average inductor current proportional to the current control signal and only determined by the current control signal. Stability analysis is performed by the root-locus method, which reveals that the current control loop is inherently stable. When the voltage feedback loop is closed, the output of the voltage error amplifier is used as the control signal. A PI controller is used to regulate the output voltage. The audio susceptibility and closed loop output impedance are presented. Experimental results demonstrate that the inductor current is not affected by large disturbances in supply voltage or output load and the buck converter with the proposed current mode control exhibits excellent performance.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131432586","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 : 1999-06-27DOI: 10.1109/PESC.1999.785610
A. Rao, T. Lipo, A. Julian
This paper addresses the problem of common mode EMI reduction in single phase PWM inverters by means of active cancellation. A topological modification which balances the switching pattern of the inverter is made. Common mode voltage, which results chiefly from unbalanced switching is thus significantly attenuated. This attenuation translates into a substantial reduction in the size and cost of passive filtering components needed to comply with conducted EMI standards. The principles of operation and performance of the proposed topology are discussed in this paper.
{"title":"A modified single phase inverter topology with active common mode voltage cancellation","authors":"A. Rao, T. Lipo, A. Julian","doi":"10.1109/PESC.1999.785610","DOIUrl":"https://doi.org/10.1109/PESC.1999.785610","url":null,"abstract":"This paper addresses the problem of common mode EMI reduction in single phase PWM inverters by means of active cancellation. A topological modification which balances the switching pattern of the inverter is made. Common mode voltage, which results chiefly from unbalanced switching is thus significantly attenuated. This attenuation translates into a substantial reduction in the size and cost of passive filtering components needed to comply with conducted EMI standards. The principles of operation and performance of the proposed topology are discussed in this paper.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123584879","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 : 1999-06-27DOI: 10.1109/PESC.1999.788987
A. Fernández, J. Sebastián, P. Villegas, M. Hernando
A recently proposed active input current shaper (AICS) is used to turn a conventional buck converter into a single stage AC/DC converter that complies with IEC 1000-3-2 regulations with high efficiency, fast transient response and low cost. This topology is used in this paper to design an online battery charger with no galvanic isolation. This solution is a very simple one and only implies slight changes to the conventional topology. Besides, efficiency is high and the size increase is small, all of which is obtained at a very low cost.
{"title":"One stage, fast response, buck based AC-to-DC converter with active input current shaping","authors":"A. Fernández, J. Sebastián, P. Villegas, M. Hernando","doi":"10.1109/PESC.1999.788987","DOIUrl":"https://doi.org/10.1109/PESC.1999.788987","url":null,"abstract":"A recently proposed active input current shaper (AICS) is used to turn a conventional buck converter into a single stage AC/DC converter that complies with IEC 1000-3-2 regulations with high efficiency, fast transient response and low cost. This topology is used in this paper to design an online battery charger with no galvanic isolation. This solution is a very simple one and only implies slight changes to the conventional topology. Besides, efficiency is high and the size increase is small, all of which is obtained at a very low cost.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123688105","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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