Pub Date : 1996-06-23DOI: 10.1109/PESC.1996.548686
Wei Chen, F. Lee, T. Yamauchi
The charge pump electronic ballast circuit, which employs a charging capacitor and a high frequency AC source to implement the power factor correction (PFC), has become an attractive topology for ballasting the fluorescent lamps because it eliminates the use of a bulky boost inductor. But this circuit has the problem of high voltage stress at light load operations especially during the preheat and startup operations of the lamps. Based on the analysis of the operation principle, the following solution was proposed. With the introduction of a second resonance stage, the voltage stress in this ballast was reduced by half. The experimental results are provided for verification.
{"title":"Reduction of voltage stress in charge pump electronic ballast","authors":"Wei Chen, F. Lee, T. Yamauchi","doi":"10.1109/PESC.1996.548686","DOIUrl":"https://doi.org/10.1109/PESC.1996.548686","url":null,"abstract":"The charge pump electronic ballast circuit, which employs a charging capacitor and a high frequency AC source to implement the power factor correction (PFC), has become an attractive topology for ballasting the fluorescent lamps because it eliminates the use of a bulky boost inductor. But this circuit has the problem of high voltage stress at light load operations especially during the preheat and startup operations of the lamps. Based on the analysis of the operation principle, the following solution was proposed. With the introduction of a second resonance stage, the voltage stress in this ballast was reduced by half. The experimental results are provided for verification.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"26 1","pages":"887-893 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78204607","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 : 1996-06-23DOI: 10.1109/PESC.1996.548810
M. Chang, Jiann-Yow Lin, Y. Tzou
This paper presents a newly developed nonlinear digital current mode control (NDCMC) scheme for single-phase full-bridge power converter system. The proposed NDCMC scheme uses the samples of a set of instantaneous feedback signals to implement a pulse-by-pulse current-programmed control strategy in software to achieve the fastest control-to-output response with minimum current ripple. A DSP-based PWM power converter control system is constructed to implement the proposed control scheme. The simulation and experimental results show that the proposed control method can achieve good dynamic response.
{"title":"DSP-based fully digital control of a AC/DC converter with a nonlinear digital current mode control","authors":"M. Chang, Jiann-Yow Lin, Y. Tzou","doi":"10.1109/PESC.1996.548810","DOIUrl":"https://doi.org/10.1109/PESC.1996.548810","url":null,"abstract":"This paper presents a newly developed nonlinear digital current mode control (NDCMC) scheme for single-phase full-bridge power converter system. The proposed NDCMC scheme uses the samples of a set of instantaneous feedback signals to implement a pulse-by-pulse current-programmed control strategy in software to achieve the fastest control-to-output response with minimum current ripple. A DSP-based PWM power converter control system is constructed to implement the proposed control scheme. The simulation and experimental results show that the proposed control method can achieve good dynamic response.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"39 1","pages":"1702-1708 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74459573","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 : 1996-06-23DOI: 10.1109/PESC.1996.548763
E. Tatakis, N. Polyzos
The behaviour of ZVS-QRCs (quasi-resonant power converters), analyzed in previously published works is based on the assumption of equal input and output energies. Nevertheless measurements on experimental circuits demonstrate an important deviation between the results of theoretical analyses and the real behavioral characteristics of such power converters. In this paper, a novel method to approximate the behavioral characteristics of ZVS-QRCs is analyzed and an experimental study of different ZVS-QR topologies is presented. The main reasons for the discrepancy between theoretical and real characteristics are discussed.
{"title":"A novel approach to evaluate the behavioral characteristics of zero-voltage switching quasi-resonant converters","authors":"E. Tatakis, N. Polyzos","doi":"10.1109/PESC.1996.548763","DOIUrl":"https://doi.org/10.1109/PESC.1996.548763","url":null,"abstract":"The behaviour of ZVS-QRCs (quasi-resonant power converters), analyzed in previously published works is based on the assumption of equal input and output energies. Nevertheless measurements on experimental circuits demonstrate an important deviation between the results of theoretical analyses and the real behavioral characteristics of such power converters. In this paper, a novel method to approximate the behavioral characteristics of ZVS-QRCs is analyzed and an experimental study of different ZVS-QR topologies is presented. The main reasons for the discrepancy between theoretical and real characteristics are discussed.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"88 1","pages":"1388-1393 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79893227","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 : 1996-06-23DOI: 10.1109/PESC.1996.548562
G. Moschopoulos, P. Jain, Yanfei Liu, G. Joós
A zero-voltage switched (ZVS) PWM boost converter with an energy feedforward auxiliary circuit is proposed in this paper. This converter can be operated with PWM control because ZVS operation is achieved with an auxiliary resonant circuit that has few switching losses and handles much less power than the main power circuit as it is activated for only a small fraction of the switching cycle. Moreover, peak switch stresses are lower than those found in other proposed converters because some of the energy circulating in the auxiliary circuit is fed to the load. In the paper, the modes of converter operation are explained and analyzed, design guidelines are given, and experimental results are presented.
{"title":"A zero-voltage switched PWM boost converter with an energy feedforward auxiliary circuit","authors":"G. Moschopoulos, P. Jain, Yanfei Liu, G. Joós","doi":"10.1109/PESC.1996.548562","DOIUrl":"https://doi.org/10.1109/PESC.1996.548562","url":null,"abstract":"A zero-voltage switched (ZVS) PWM boost converter with an energy feedforward auxiliary circuit is proposed in this paper. This converter can be operated with PWM control because ZVS operation is achieved with an auxiliary resonant circuit that has few switching losses and handles much less power than the main power circuit as it is activated for only a small fraction of the switching cycle. Moreover, peak switch stresses are lower than those found in other proposed converters because some of the energy circulating in the auxiliary circuit is fed to the load. In the paper, the modes of converter operation are explained and analyzed, design guidelines are given, and experimental results are presented.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"104 1","pages":"76-82 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80470873","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 : 1996-06-23DOI: 10.1109/PESC.1996.548558
N. Talwalkar, P. Lauritzen, B. Fatemizadeh, D. Perlman, C.L. Ma
The power BJT is modeled using the lumped-charge method using simplified forms of the Poisson's equation, the continuity equation and the Boltzmann relation. All important one-dimensional effects are included in the model. Only nine parameters are needed to completely specify the model except for junction capacitances and parasitic resistances. This model can be easily extended to make a BJT Darlington model.
{"title":"A power BJT model for circuit simulation","authors":"N. Talwalkar, P. Lauritzen, B. Fatemizadeh, D. Perlman, C.L. Ma","doi":"10.1109/PESC.1996.548558","DOIUrl":"https://doi.org/10.1109/PESC.1996.548558","url":null,"abstract":"The power BJT is modeled using the lumped-charge method using simplified forms of the Poisson's equation, the continuity equation and the Boltzmann relation. All important one-dimensional effects are included in the model. Only nine parameters are needed to completely specify the model except for junction capacitances and parasitic resistances. This model can be easily extended to make a BJT Darlington model.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"22 1","pages":"50-55 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80911669","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 : 1996-06-23DOI: 10.1109/PESC.1996.548554
Z. Hossain, E. Yang, V. Temple, C.L. Ma, K. Olejniczak
This paper presents a physics-based model of MOS controlled thyristors (MCT) using the lumped-charge modeling technique. As a relatively new power semiconductor device, little effort has been made thus far in creating an accurate model used for simulation. The only MCT model available to date is that based on the two bipolar transistor-behavioral subcircuit model. This model works well for static operation, but it has limitations in predicting the dynamic behavior of the device due to the omission of the internal device physics. The use of the lumped-charge modeling technique facilitates the inclusion of internal physical processes and the structural geometry of the device into the model. As a result, this technique provides a more realistic and accurate model than any other presently available. This model is verified through Saber(R) simulation and experimental results.
{"title":"An MCT circuit model using the lumped-charge modeling technique","authors":"Z. Hossain, E. Yang, V. Temple, C.L. Ma, K. Olejniczak","doi":"10.1109/PESC.1996.548554","DOIUrl":"https://doi.org/10.1109/PESC.1996.548554","url":null,"abstract":"This paper presents a physics-based model of MOS controlled thyristors (MCT) using the lumped-charge modeling technique. As a relatively new power semiconductor device, little effort has been made thus far in creating an accurate model used for simulation. The only MCT model available to date is that based on the two bipolar transistor-behavioral subcircuit model. This model works well for static operation, but it has limitations in predicting the dynamic behavior of the device due to the omission of the internal device physics. The use of the lumped-charge modeling technique facilitates the inclusion of internal physical processes and the structural geometry of the device into the model. As a result, this technique provides a more realistic and accurate model than any other presently available. This model is verified through Saber(R) simulation and experimental results.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"9 1","pages":"23-28 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79910287","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 : 1996-06-23DOI: 10.1109/PESC.1996.548781
Shih-Liang Jung, Hsiang-Sung Huang, Y. Tzou
This paper presents a self-tuning discrete sliding mode control scheme with feedforward compensation for the closed-loop regulation of PWM inverters used in uninterruptible power supplies (UPS). A self-tuning scheme is proposed to adjust the parameters of both the feedforward and sliding mode controllers. In designing the sliding mode controller, the authors have taken the effect of load disturbance into consideration to enhance the robustness of the controlled system. The sliding surface of the sliding mode controller is designed such that the behavior of the controlled PWM inverter system is optimal, subject to the defined cost function. Simulation and experimental results are given to show the superiority of the proposed control scheme.
{"title":"Self-tuning discrete sliding mode control of a closed-loop regulated PWM inverter with optimal sliding surface","authors":"Shih-Liang Jung, Hsiang-Sung Huang, Y. Tzou","doi":"10.1109/PESC.1996.548781","DOIUrl":"https://doi.org/10.1109/PESC.1996.548781","url":null,"abstract":"This paper presents a self-tuning discrete sliding mode control scheme with feedforward compensation for the closed-loop regulation of PWM inverters used in uninterruptible power supplies (UPS). A self-tuning scheme is proposed to adjust the parameters of both the feedforward and sliding mode controllers. In designing the sliding mode controller, the authors have taken the effect of load disturbance into consideration to enhance the robustness of the controlled system. The sliding surface of the sliding mode controller is designed such that the behavior of the controlled PWM inverter system is optimal, subject to the defined cost function. Simulation and experimental results are given to show the superiority of the proposed control scheme.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"19 3 1","pages":"1506-1512 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89422160","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 : 1996-06-23DOI: 10.1109/PESC.1996.548845
G.H. Chen, K. Tseng
This paper presents a high efficiency direct wheel motor drive for electric vehicles (EVs). The proposed motor is a permanent magnet square-wave motor whose rotor with rare earth magnets forms the outside of the motor to be set within each wheel tyre to realize the direct drive. In order to achieve the direct drive without any mechanical transmission for EVs, the wheel motor has been designed as a low-speed high-torque motor. The design and optimization of the motor was done with the aid of finite element electromagnetic field analysis. The advanced motor control strategy, which could ensure the wheel motor drive runs efficiently in the entire permitted speed and load range, is also discussed. The design procedure of the 6.2 kW, 1000 rpm wheel motor drive and its technical data are given in this paper.
{"title":"Design of a permanent-magnet direct-driven wheel motor drive for electric vehicle","authors":"G.H. Chen, K. Tseng","doi":"10.1109/PESC.1996.548845","DOIUrl":"https://doi.org/10.1109/PESC.1996.548845","url":null,"abstract":"This paper presents a high efficiency direct wheel motor drive for electric vehicles (EVs). The proposed motor is a permanent magnet square-wave motor whose rotor with rare earth magnets forms the outside of the motor to be set within each wheel tyre to realize the direct drive. In order to achieve the direct drive without any mechanical transmission for EVs, the wheel motor has been designed as a low-speed high-torque motor. The design and optimization of the motor was done with the aid of finite element electromagnetic field analysis. The advanced motor control strategy, which could ensure the wheel motor drive runs efficiently in the entire permitted speed and load range, is also discussed. The design procedure of the 6.2 kW, 1000 rpm wheel motor drive and its technical data are given in this paper.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"17 1","pages":"1933-1939 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87878315","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 : 1996-06-23DOI: 10.1109/PESC.1996.548576
E. Mehl, I. Barbi
The analysis of a new three-phase rectifier with high power factor is presented in this paper, in view of a complete design procedure. The main features of the proposed circuit are low cost, small size, high efficiency and simplicity. With the introduction of the "critical inductance" of the converter, the circuit can be analyzed by a simplified equivalent circuit. A set of linear equations was derived, modeling the input current of the rectifier and demonstrating the high power factor and low harmonic distortion characteristics of the circuit. The theoretical analysis was validated with simulation and experimental results obtained from two laboratory prototypes rated at 7 kW and 12 kW, connected to the 220 V, 60 Hz AC system.
{"title":"Design oriented analysis of a high power factor and low cost three-phase rectifier","authors":"E. Mehl, I. Barbi","doi":"10.1109/PESC.1996.548576","DOIUrl":"https://doi.org/10.1109/PESC.1996.548576","url":null,"abstract":"The analysis of a new three-phase rectifier with high power factor is presented in this paper, in view of a complete design procedure. The main features of the proposed circuit are low cost, small size, high efficiency and simplicity. With the introduction of the \"critical inductance\" of the converter, the circuit can be analyzed by a simplified equivalent circuit. A set of linear equations was derived, modeling the input current of the rectifier and demonstrating the high power factor and low harmonic distortion characteristics of the circuit. The theoretical analysis was validated with simulation and experimental results obtained from two laboratory prototypes rated at 7 kW and 12 kW, connected to the 220 V, 60 Hz AC system.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"08 1","pages":"165-170 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90233046","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 : 1996-06-23DOI: 10.1109/PESC.1996.548818
A.N. Githiari, R.J. Leedham, P. Palmer
The advantages of operating the IGBT in its active region for active snubbing and series operation have been established in the literature. In this paper we describe the implementation and performance of several gate drive circuits suitable for use in closed loop control of the IGBT voltage. The application of the gate drives to active control of a wide range of IGBT devices is demonstrated and discussed.
{"title":"High performance gate drives for utilizing the IGBT in the active region","authors":"A.N. Githiari, R.J. Leedham, P. Palmer","doi":"10.1109/PESC.1996.548818","DOIUrl":"https://doi.org/10.1109/PESC.1996.548818","url":null,"abstract":"The advantages of operating the IGBT in its active region for active snubbing and series operation have been established in the literature. In this paper we describe the implementation and performance of several gate drive circuits suitable for use in closed loop control of the IGBT voltage. The application of the gate drives to active control of a wide range of IGBT devices is demonstrated and discussed.","PeriodicalId":19979,"journal":{"name":"PESC Record. 27th Annual IEEE Power Electronics Specialists Conference","volume":"2 1","pages":"1754-1759 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83479815","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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