Pub Date : 1999-06-27DOI: 10.1109/PESC.1999.789047
R. Gurunathan, A. Bhat
A zero-voltage transition boost converter using zero-voltage switching auxiliary switches is proposed. The operating principle and various operating intervals of the converter are presented and analyzed. Design considerations are discussed and a design example of a 300 W, 250 kHz, 300 V output, DC-to-DC boost converter is presented with experimental results. Results clearly show the efficient high frequency operation.
{"title":"A soft-switched boost converter for high-frequency operation","authors":"R. Gurunathan, A. Bhat","doi":"10.1109/PESC.1999.789047","DOIUrl":"https://doi.org/10.1109/PESC.1999.789047","url":null,"abstract":"A zero-voltage transition boost converter using zero-voltage switching auxiliary switches is proposed. The operating principle and various operating intervals of the converter are presented and analyzed. Design considerations are discussed and a design example of a 300 W, 250 kHz, 300 V output, DC-to-DC boost converter is presented with experimental results. Results clearly show the efficient high frequency operation.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"69 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":"133691326","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.1999.785632
Y. Jang, M. Jovanovic
A circuit technique that reduces switching losses of the pulse-width-modulated boost converter is described. The losses are reduced by using a new switch cell that consists of an inductor, a diode, a capacitor, a main switch, and an auxiliary switch. This technique reduces the reverse-recovery-related losses of the rectifier with the inductor that controls the di/dt rate of the rectifier during its turn-off. In addition, the main switch turns off at zero current, while the auxiliary switch turns on at zero voltage. Due to the zero-current switching of the main switch, this technique is particularly suitable for boost converter implementations with insulated-gate bipolar transistors.
{"title":"A new technique for reducing switching losses in pulse-width-modulated boost converter","authors":"Y. Jang, M. Jovanovic","doi":"10.1109/PESC.1999.785632","DOIUrl":"https://doi.org/10.1109/PESC.1999.785632","url":null,"abstract":"A circuit technique that reduces switching losses of the pulse-width-modulated boost converter is described. The losses are reduced by using a new switch cell that consists of an inductor, a diode, a capacitor, a main switch, and an auxiliary switch. This technique reduces the reverse-recovery-related losses of the rectifier with the inductor that controls the di/dt rate of the rectifier during its turn-off. In addition, the main switch turns off at zero current, while the auxiliary switch turns on at zero voltage. Due to the zero-current switching of the main switch, this technique is particularly suitable for boost converter implementations with insulated-gate bipolar transistors.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"221 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":"132055671","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.1999.788978
S. Jung, N. Jung, J. Hwang, G. Cho
This paper presents an optimum design for a low-voltage, low-power DC-DC converter which has a controller and integrated CMOS switches using a small size inductor (1 /spl mu/H). Optimum design for the single chip DC/DC converter is achieved by analyzing the amount of conduction and switching losses. Through the loss analyses, it turns out that a constant frequency hard switching PWM converter with synchronous rectifier is most suitable among the several kinds of DC-DC converters for low voltage and low power applications.
{"title":"An integrated CMOS DC-DC converter for battery-operated systems","authors":"S. Jung, N. Jung, J. Hwang, G. Cho","doi":"10.1109/PESC.1999.788978","DOIUrl":"https://doi.org/10.1109/PESC.1999.788978","url":null,"abstract":"This paper presents an optimum design for a low-voltage, low-power DC-DC converter which has a controller and integrated CMOS switches using a small size inductor (1 /spl mu/H). Optimum design for the single chip DC/DC converter is achieved by analyzing the amount of conduction and switching losses. Through the loss analyses, it turns out that a constant frequency hard switching PWM converter with synchronous rectifier is most suitable among the several kinds of DC-DC converters for low voltage and low power applications.","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":"114333425","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.1999.785608
H. Gutt, V. Bosch, D. Reismayr
A new sensorless single-drive system with PM-excited motors is described. Its inverter is directly controlled by the motor EMF and its harmonics, giving as well the motor speed, the exact rotor position for operating the motor as a brushless DC machine. The integrated microcontroller realises supervisory functions.
{"title":"Sensorless direct control of brushless inverter fed permanent magnet excited AC motor drive system","authors":"H. Gutt, V. Bosch, D. Reismayr","doi":"10.1109/PESC.1999.785608","DOIUrl":"https://doi.org/10.1109/PESC.1999.785608","url":null,"abstract":"A new sensorless single-drive system with PM-excited motors is described. Its inverter is directly controlled by the motor EMF and its harmonics, giving as well the motor speed, the exact rotor position for operating the motor as a brushless DC machine. The integrated microcontroller realises supervisory functions.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"98 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":"122054630","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.1999.789030
J. Qian, G. Bruning
Power converters operating at megahertz frequency potentially offer high power density and miniaturization. Their exploitation has been hindered by high switching losses not only in the power stage but also in the gate driver. Gate drivers with square-wave and sinusoidal-wave shapes are analyzed and a new high efficiency soft-switching gate driver with gate capacitive energy recovery is proposed and implemented. The conditions to achieve zero-voltage-switching (ZVS) operation and design considerations for a 2.65 MHz power converter are also presented. It is shown that the 2.65 MHz, 100 W power converter has 92.6% overall efficiency.
{"title":"2.65 MHz high efficiency soft-switching power amplifier system","authors":"J. Qian, G. Bruning","doi":"10.1109/PESC.1999.789030","DOIUrl":"https://doi.org/10.1109/PESC.1999.789030","url":null,"abstract":"Power converters operating at megahertz frequency potentially offer high power density and miniaturization. Their exploitation has been hindered by high switching losses not only in the power stage but also in the gate driver. Gate drivers with square-wave and sinusoidal-wave shapes are analyzed and a new high efficiency soft-switching gate driver with gate capacitive energy recovery is proposed and implemented. The conditions to achieve zero-voltage-switching (ZVS) operation and design considerations for a 2.65 MHz power converter are also presented. It is shown that the 2.65 MHz, 100 W power converter has 92.6% overall efficiency.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"16 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":"125669100","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.1999.785654
H. Calleja, R. Ordoñez
An inverter aimed at induction heating applications is presented. It features power factor correction and fast response to sudden changes in the load, while providing the capability to vary the power supplied to the load. Power variation is achieved by means of pulse density modulation using variable-length sequences; thus allowing a high number of power levels to be achieved. The minimum quality factor necessary to make the harmonic spectrum independent of the modulation is also specified; this ensures that most of the power transferred to the load will be at the resonant frequency.
{"title":"Improved induction-heating inverter with power factor correction","authors":"H. Calleja, R. Ordoñez","doi":"10.1109/PESC.1999.785654","DOIUrl":"https://doi.org/10.1109/PESC.1999.785654","url":null,"abstract":"An inverter aimed at induction heating applications is presented. It features power factor correction and fast response to sudden changes in the load, while providing the capability to vary the power supplied to the load. Power variation is achieved by means of pulse density modulation using variable-length sequences; thus allowing a high number of power levels to be achieved. The minimum quality factor necessary to make the harmonic spectrum independent of the modulation is also specified; this ensures that most of the power transferred to the load will be at the resonant frequency.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"42 2 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":"126171959","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.1999.785663
D. K. Jackson, S. Leeb, S. R. Shaw
This paper presents adaptive-control schemes that estimate load-model parameters and adaptively "tune" a digital controller for an inductively-coupled power delivery circuit. Estimation algorithms are presented that utilize specific recursive formulations, which provide adequate noise immunity in a power-electronic environment. The techniques are demonstrated using a servomechanical system and a 1.5 kW prototype power electronic drive.
{"title":"Adaptive control of an inductive power transfer coupling for servomechanical systems","authors":"D. K. Jackson, S. Leeb, S. R. Shaw","doi":"10.1109/PESC.1999.785663","DOIUrl":"https://doi.org/10.1109/PESC.1999.785663","url":null,"abstract":"This paper presents adaptive-control schemes that estimate load-model parameters and adaptively \"tune\" a digital controller for an inductively-coupled power delivery circuit. Estimation algorithms are presented that utilize specific recursive formulations, which provide adequate noise immunity in a power-electronic environment. The techniques are demonstrated using a servomechanical system and a 1.5 kW prototype power electronic drive.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"74 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":"124074968","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.1999.789076
R. Prieto, J. Oliver, J. Cobos, J. Uceda
1D magnetic component models are very useful to study particular cases in which 1D approximations can be assumed. The field distribution can be considered as 1D when the magnetic field (H) shows negligible values in two of the three dimensions, and the magnitude of the nonzero coordinate keeps constant along this 1D direction. Therefore, 1D models should be modified in order to be used with planar transformers, because their magnetic field vector has a constant direction, but its magnitude is not constant along that direction. This work presents a 1D model for planar magnetic transformers. Since those components are widely applied this procedure can become a useful analysis tool. Some comparisons between 2D approaches and the proposed 1D model have been carried out in order to show the accuracy of the proposed method.
{"title":"1D magnetic component model for planar structures","authors":"R. Prieto, J. Oliver, J. Cobos, J. Uceda","doi":"10.1109/PESC.1999.789076","DOIUrl":"https://doi.org/10.1109/PESC.1999.789076","url":null,"abstract":"1D magnetic component models are very useful to study particular cases in which 1D approximations can be assumed. The field distribution can be considered as 1D when the magnetic field (H) shows negligible values in two of the three dimensions, and the magnitude of the nonzero coordinate keeps constant along this 1D direction. Therefore, 1D models should be modified in order to be used with planar transformers, because their magnetic field vector has a constant direction, but its magnitude is not constant along that direction. This work presents a 1D model for planar magnetic transformers. Since those components are widely applied this procedure can become a useful analysis tool. Some comparisons between 2D approaches and the proposed 1D model have been carried out in order to show the accuracy of the proposed method.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"71 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":"127150197","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.1999.788975
H. Guldner, K. Lehnert, F. Bohme, F. Raiser
In the lower power range, electronic ballasts represent an interesting application of power electronics. While the usable power semiconductors are relatively easy to understand, the diversity of circuit topologies, discussed in the literature, is considerably more difficult to evaluate. What further complicates the situation, is the fact that in addition to technical requirements (crest factor, power factor, EMC), cost plays the major role in this application. In this paper we present a classification for known circuit topologies and add some new ones. The classification allows one to compare different circuit topologies with respect to component count and technical performance.
{"title":"Principles of electronic ballasts for fluorescent lamps-an overview","authors":"H. Guldner, K. Lehnert, F. Bohme, F. Raiser","doi":"10.1109/PESC.1999.788975","DOIUrl":"https://doi.org/10.1109/PESC.1999.788975","url":null,"abstract":"In the lower power range, electronic ballasts represent an interesting application of power electronics. While the usable power semiconductors are relatively easy to understand, the diversity of circuit topologies, discussed in the literature, is considerably more difficult to evaluate. What further complicates the situation, is the fact that in addition to technical requirements (crest factor, power factor, EMC), cost plays the major role in this application. In this paper we present a classification for known circuit topologies and add some new ones. The classification allows one to compare different circuit topologies with respect to component count and technical performance.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"39 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":"129168444","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.1999.789007
V. Cárdenas, M. Oliver, N. Visairo, S. Ramirez, C. Nuñez, H. Sira-Ramírez
This paper presents a three-phase shunt active power filter controlled by the nonlinear passivity technique. The dissipative features in which the passivity technique is based on allow the development of a nonlinear controller having a good dynamical response, robustness and stability. The control circuit is based on a DSP. Analysis and modeling are presented as well as simulation and experimental results, which verify the satisfactory of the proposed approach.
{"title":"Analysis and design of a three phase active shunt power filter based on the non-linear passivity approach","authors":"V. Cárdenas, M. Oliver, N. Visairo, S. Ramirez, C. Nuñez, H. Sira-Ramírez","doi":"10.1109/PESC.1999.789007","DOIUrl":"https://doi.org/10.1109/PESC.1999.789007","url":null,"abstract":"This paper presents a three-phase shunt active power filter controlled by the nonlinear passivity technique. The dissipative features in which the passivity technique is based on allow the development of a nonlinear controller having a good dynamical response, robustness and stability. The control circuit is based on a DSP. Analysis and modeling are presented as well as simulation and experimental results, which verify the satisfactory of the proposed approach.","PeriodicalId":292317,"journal":{"name":"30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)","volume":"1 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":"129937961","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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