This paper is related to the noncontact energy transfer system which can stabilize the load voltage with no feedback control used three resonant circuits. This system which employs a detachable transformer for magnetic coupling has a leakage inductance. Therefore load voltage decreases greatly in proportion to load electric current. A feedback control circuit of the noncontact energy transfer system is more complicated than that of the contact energy transfer system. Namely, a noncontact energy transfer system with no-feedback system is expected for stabilization of the load voltage. A high efficiency noncontact energy transfer system requires several resonant circuits such as resonant inverter and resonant circuit for load matching. The authors found a novel method which minimizes the load voltage drop rate by using optimized capacitance value of above the resonant circuits.
{"title":"Load voltage stabilization of noncontact energy transfer using three resonant circuit","authors":"H. Abe, H. Sakamoto, K. Harada","doi":"10.1109/PCC.2002.997563","DOIUrl":"https://doi.org/10.1109/PCC.2002.997563","url":null,"abstract":"This paper is related to the noncontact energy transfer system which can stabilize the load voltage with no feedback control used three resonant circuits. This system which employs a detachable transformer for magnetic coupling has a leakage inductance. Therefore load voltage decreases greatly in proportion to load electric current. A feedback control circuit of the noncontact energy transfer system is more complicated than that of the contact energy transfer system. Namely, a noncontact energy transfer system with no-feedback system is expected for stabilization of the load voltage. A high efficiency noncontact energy transfer system requires several resonant circuits such as resonant inverter and resonant circuit for load matching. The authors found a novel method which minimizes the load voltage drop rate by using optimized capacitance value of above the resonant circuits.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134314755","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}
This paper proposes a soft-switched three-phase-single-switch-boost-rectifier circuit. The proposed circuit can perform zero-voltage-switching (ZVS) without any current and voltage sensors. For this circuit, both simulation and experiments have been performed. The results not only confirmed the zero-voltage-switching (ZVS) but also indicated that, compared to the conventional hard-switched rectifier, the proposed circuit improves the efficiency as much as 2.7% while keeping the same high power factor and small harmonic distortion in their AC input.
{"title":"Soft switched three-phase single switch boost-type rectifier","authors":"D. Tokushima, H. Ishikawa, D. Wang, H. Naitoh","doi":"10.1109/PCC.2002.997567","DOIUrl":"https://doi.org/10.1109/PCC.2002.997567","url":null,"abstract":"This paper proposes a soft-switched three-phase-single-switch-boost-rectifier circuit. The proposed circuit can perform zero-voltage-switching (ZVS) without any current and voltage sensors. For this circuit, both simulation and experiments have been performed. The results not only confirmed the zero-voltage-switching (ZVS) but also indicated that, compared to the conventional hard-switched rectifier, the proposed circuit improves the efficiency as much as 2.7% while keeping the same high power factor and small harmonic distortion in their AC input.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134584589","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}
A. Hirota, S. Nagai, M. Al, M. Rukonuzzaman, M. Nakaoka
With great advance of power semiconductor switching devices and their related control circuits, high frequency switching power converters can be implemented for power electronic appliances. In these converters, a pulse width modulation (PWM) technique is widely used. On the other hand, to improve power factor in utility AC side of converter a variety of power factor correction (PFC) converters are effectively introduced. For these converters, hysteresis current control method is developed and applying. Usually, this control scheme uses reference sinusoidal wave and upper limit signal which is determined by added constant value to reference signal, as well as lower limit signal which is determined by subtracted constant value from the reference signal. Using these signals, hysteresis current control method for PFC converter regulates its input current within the range that is determined by the upper and lower limit. In this paper the authors propose a simple configuration hysteresis controlled PFC converter which can effectively reduce current ratings of switching power device. The proposed PFC converter controls input line current keeps within the constant upper limit, specified by the switching power semiconductor device rating, as well as lower limit determined by reference sinusoidal wave. From FFT analytical results, the proposed circuit can lower the current rating of switching power device than fundamental component of input line current.
{"title":"A novel hysteresis current control scheme for single switch type single phase PFC converter","authors":"A. Hirota, S. Nagai, M. Al, M. Rukonuzzaman, M. Nakaoka","doi":"10.1109/PCC.2002.998147","DOIUrl":"https://doi.org/10.1109/PCC.2002.998147","url":null,"abstract":"With great advance of power semiconductor switching devices and their related control circuits, high frequency switching power converters can be implemented for power electronic appliances. In these converters, a pulse width modulation (PWM) technique is widely used. On the other hand, to improve power factor in utility AC side of converter a variety of power factor correction (PFC) converters are effectively introduced. For these converters, hysteresis current control method is developed and applying. Usually, this control scheme uses reference sinusoidal wave and upper limit signal which is determined by added constant value to reference signal, as well as lower limit signal which is determined by subtracted constant value from the reference signal. Using these signals, hysteresis current control method for PFC converter regulates its input current within the range that is determined by the upper and lower limit. In this paper the authors propose a simple configuration hysteresis controlled PFC converter which can effectively reduce current ratings of switching power device. The proposed PFC converter controls input line current keeps within the constant upper limit, specified by the switching power semiconductor device rating, as well as lower limit determined by reference sinusoidal wave. From FFT analytical results, the proposed circuit can lower the current rating of switching power device than fundamental component of input line current.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133788986","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}
S. Hase, T. Konishi, A. Okui, Y. Mochinaga, K. Murata, S. Kawai, M. Sonetaka, H. Sakai, T. Kanai, Y. Tagami, M. Ono, K. Baba
A new type DC electric railway system is under development for high speed and mass transportation in Japan. This system needs large power conversion stations consisting of PWM converters on the ground. The PWM converter is required to supply power stably according to the running conditions of the electric rolling stock. In this system, the PWM converter is required to control the DC feeding voltage of 1,500 V at the error rate of 0.5% or less to suppress magnetic disturbance. Moreover the PWM converter has to suppress the oscillating current occurring between the PWM converter and electric rolling stock This paper describes the PWM converter for the DC electric railway system, with emphasis placed on its control methods, characteristics and experimental results.
{"title":"Control methods and characteristics of power converter with large capacity for electric railway system","authors":"S. Hase, T. Konishi, A. Okui, Y. Mochinaga, K. Murata, S. Kawai, M. Sonetaka, H. Sakai, T. Kanai, Y. Tagami, M. Ono, K. Baba","doi":"10.1109/PCC.2002.998115","DOIUrl":"https://doi.org/10.1109/PCC.2002.998115","url":null,"abstract":"A new type DC electric railway system is under development for high speed and mass transportation in Japan. This system needs large power conversion stations consisting of PWM converters on the ground. The PWM converter is required to supply power stably according to the running conditions of the electric rolling stock. In this system, the PWM converter is required to control the DC feeding voltage of 1,500 V at the error rate of 0.5% or less to suppress magnetic disturbance. Moreover the PWM converter has to suppress the oscillating current occurring between the PWM converter and electric rolling stock This paper describes the PWM converter for the DC electric railway system, with emphasis placed on its control methods, characteristics and experimental results.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123162347","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}
The active power filters with line current detection need fewer detectors than those with individual load current detection, though the former have harmonics resonance problems. To avoid these problems, we propose a novel control system consisting of a line characteristics identifier and a 2nd-order filter. The identifier provides the line frequency characteristics observed from the point of the active power filter. The parameters of the 2nd-order filter are determined according to the identified characteristics. We obtained good results of both simulations and experiments using a prototype model.
{"title":"A resonance dumping control for a line-current detection type active filter","authors":"H. Tokuda, I. Amano, N. Eguchi","doi":"10.1109/PCC.2002.997614","DOIUrl":"https://doi.org/10.1109/PCC.2002.997614","url":null,"abstract":"The active power filters with line current detection need fewer detectors than those with individual load current detection, though the former have harmonics resonance problems. To avoid these problems, we propose a novel control system consisting of a line characteristics identifier and a 2nd-order filter. The identifier provides the line frequency characteristics observed from the point of the active power filter. The parameters of the 2nd-order filter are determined according to the identified characteristics. We obtained good results of both simulations and experiments using a prototype model.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132194554","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}
Dehong Xu, Jindong Zhang, Weiyun Chen, Jin-Yuan Lin, F. Lee
In this paper current ripple in output capacitor is investigated for a boost converter, two-lower-switch converter, 3-level converter with range switch, and totem-pole converter with range switch. Its effect on output voltage ripple and capacitor voltage stress is studied. Filter current ripples in output capacitors for these four topologies are compared and the method to select output capacitor according to the current ripple ability of the capacitor is discussed.
{"title":"Evaluation of output filter capacitor current ripples in single phase PFC converters","authors":"Dehong Xu, Jindong Zhang, Weiyun Chen, Jin-Yuan Lin, F. Lee","doi":"10.1109/PCC.2002.998148","DOIUrl":"https://doi.org/10.1109/PCC.2002.998148","url":null,"abstract":"In this paper current ripple in output capacitor is investigated for a boost converter, two-lower-switch converter, 3-level converter with range switch, and totem-pole converter with range switch. Its effect on output voltage ripple and capacitor voltage stress is studied. Filter current ripples in output capacitors for these four topologies are compared and the method to select output capacitor according to the current ripple ability of the capacitor is discussed.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132298189","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}
A new method of the rotor position estimation is proposed for interior permanent magnet synchronous motors. The proposed method for the initial rotor position estimation consists of two parts: one estimates the rotor position of the magnetic pole; the other determines the direction of the magnetization at the estimated position at the same period. The basic idea and the experimental results are discussed in this paper.
{"title":"Initial rotor position estimation of the interior permanent magnet synchronous motor","authors":"D. Kaneko, Y. Iwaji, K. Sakamoto, T. Endo","doi":"10.1109/PCC.2002.998557","DOIUrl":"https://doi.org/10.1109/PCC.2002.998557","url":null,"abstract":"A new method of the rotor position estimation is proposed for interior permanent magnet synchronous motors. The proposed method for the initial rotor position estimation consists of two parts: one estimates the rotor position of the magnetic pole; the other determines the direction of the magnetization at the estimated position at the same period. The basic idea and the experimental results are discussed in this paper.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133101208","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}
In recent years, there has been a tendency to operate rectifiers with pulse-width modulated (PWM) switching patterns. But the performances of this type of PWM rectifier are in contradiction with their characteristics of switching frequency. Scholars from Japan have presented a control scheme based on space-vector pulse-width modulation (SVPWM). Due to its good characteristic of switching frequency, it has been well studied. This paper presents a simple switching algorithm based on space-vector pulse-width modulation (SVPWM). Testified by experimental results, the proposed scheme can obtain high power factor and have both rectifying and regenerating abilities.
{"title":"A simple scheme based on space-vector pulse-width modulation for three-phase rectifier","authors":"L. Zhiqiang, Lü Hongli, Hexu Sun, Wan Hongwen","doi":"10.1109/PCC.2002.998154","DOIUrl":"https://doi.org/10.1109/PCC.2002.998154","url":null,"abstract":"In recent years, there has been a tendency to operate rectifiers with pulse-width modulated (PWM) switching patterns. But the performances of this type of PWM rectifier are in contradiction with their characteristics of switching frequency. Scholars from Japan have presented a control scheme based on space-vector pulse-width modulation (SVPWM). Due to its good characteristic of switching frequency, it has been well studied. This paper presents a simple switching algorithm based on space-vector pulse-width modulation (SVPWM). Testified by experimental results, the proposed scheme can obtain high power factor and have both rectifying and regenerating abilities.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115975764","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}
Xiangning He, Yan Deng, J. Kong, Lei Hu, Zhongqing Yang
This paper presents research and development of the new, composite soft switching techniques for power converters and inverters, where active switches turn on and turn off by different soft switching techniques. The composite soft switching techniques combine snubber functions and resonant zero current switching. Characteristics and applications of the techniques are discussed.
{"title":"Development of the composite soft switching technique for power converters and inverters","authors":"Xiangning He, Yan Deng, J. Kong, Lei Hu, Zhongqing Yang","doi":"10.1109/PCC.2002.998144","DOIUrl":"https://doi.org/10.1109/PCC.2002.998144","url":null,"abstract":"This paper presents research and development of the new, composite soft switching techniques for power converters and inverters, where active switches turn on and turn off by different soft switching techniques. The composite soft switching techniques combine snubber functions and resonant zero current switching. Characteristics and applications of the techniques are discussed.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115284805","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}
The National Industrial Technology Strategy of Japan for the next decade was introduced. The power electronics technology is expected as the basis for future developments in various fields according to the strategy. Practical examples of the developments in the advanced power supply networks and the energy saving technology are explained regarding the requirements for the power electronics. The technical program supported by the government would establish the necessary basis for these developments in future as well as efforts in industries themselves following the targets given in the strategies.
{"title":"Power electronics in industrial strategy for modern society","authors":"E. Masada","doi":"10.1109/PCC.2002.998502","DOIUrl":"https://doi.org/10.1109/PCC.2002.998502","url":null,"abstract":"The National Industrial Technology Strategy of Japan for the next decade was introduced. The power electronics technology is expected as the basis for future developments in various fields according to the strategy. Practical examples of the developments in the advanced power supply networks and the energy saving technology are explained regarding the requirements for the power electronics. The technical program supported by the government would establish the necessary basis for these developments in future as well as efforts in industries themselves following the targets given in the strategies.","PeriodicalId":320424,"journal":{"name":"Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115944235","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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