Pub Date : 2006-10-16DOI: 10.1109/PEDS.1999.794607
C. Arturi, P. Fedrigo, A. Gandelli, S. Leva, A. Morando
After presenting the bi-assial model of the coupling between the four-quadrant power converter and the asynchronous motor, the paper numerically analyses the starting transient. The current obtained by the analytical relationships is then studied by means of the wavelet analysis, putting into evidence the starting transient component and the superimposed noise. It is clearly stated in the work how this methodology can extend to the transient analysis the evaluation of the harmonic content evolution during the transient phase and how any change in the power supply frequency influence the system dynamic. These results cannot be found as well by applying the more traditional Fourier transform.
{"title":"Dynamic analysis of electromechanical converters by means of the wavelet transform","authors":"C. Arturi, P. Fedrigo, A. Gandelli, S. Leva, A. Morando","doi":"10.1109/PEDS.1999.794607","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794607","url":null,"abstract":"After presenting the bi-assial model of the coupling between the four-quadrant power converter and the asynchronous motor, the paper numerically analyses the starting transient. The current obtained by the analytical relationships is then studied by means of the wavelet analysis, putting into evidence the starting transient component and the superimposed noise. It is clearly stated in the work how this methodology can extend to the transient analysis the evaluation of the harmonic content evolution during the transient phase and how any change in the power supply frequency influence the system dynamic. These results cannot be found as well by applying the more traditional Fourier transform.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127201418","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 : 2003-03-20DOI: 10.1109/PEDS.1999.794567
Yuxin Li, A. Huang, K. Motto
The emitter turn-off thyristor (ETO) is a GTO-MOSFET hybrid power semiconductor device that turns off the GTO under the unity turn-off gain condition. This paper analyzes the failure mechanism in the snubberless turn-off of the ETO and proposes solutions that extend the snubberless switching capability to the theoretical limitation of the device. Theoretical analysis and experimental results are presented.
{"title":"Analysis of the snubberless operation of the emitter turn-off thyristor (ETO)","authors":"Yuxin Li, A. Huang, K. Motto","doi":"10.1109/PEDS.1999.794567","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794567","url":null,"abstract":"The emitter turn-off thyristor (ETO) is a GTO-MOSFET hybrid power semiconductor device that turns off the GTO under the unity turn-off gain condition. This paper analyzes the failure mechanism in the snubberless turn-off of the ETO and proposes solutions that extend the snubberless switching capability to the theoretical limitation of the device. Theoretical analysis and experimental results are presented.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134240162","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 : 1999-12-01DOI: 10.1109/PEDS.1999.792871
K. M. Salim, Z. Salam, F. Taha, A. Yatim
The fuel cell is an alternative power generation method which is envisaged to be environmentally friendly and efficient. It can be an attractive solution for various "clean power" applications such as an electric vehicle. It can also be suitably used as a stand alone power generator. The fuel cell converts chemical energy into electrical energy by means of an electrochemical reaction; the output is in the form of direct voltage and current. This paper describes the development of a fuel cell power conditioner unit (PCU). The aim is to convert the DC output from the fuel cell into a 3-phase sinusoidal AC voltage and current which is suitable for domestic and industrial use. The main feature of the PCU is its global control strategy which enables the system to be configured by a single stage converter. A laboratory 5 kW 3-phase prototype PCU is developed and some typical test results are presented.
{"title":"Development of a fuel cell power conditioner system","authors":"K. M. Salim, Z. Salam, F. Taha, A. Yatim","doi":"10.1109/PEDS.1999.792871","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792871","url":null,"abstract":"The fuel cell is an alternative power generation method which is envisaged to be environmentally friendly and efficient. It can be an attractive solution for various \"clean power\" applications such as an electric vehicle. It can also be suitably used as a stand alone power generator. The fuel cell converts chemical energy into electrical energy by means of an electrochemical reaction; the output is in the form of direct voltage and current. This paper describes the development of a fuel cell power conditioner unit (PCU). The aim is to convert the DC output from the fuel cell into a 3-phase sinusoidal AC voltage and current which is suitable for domestic and industrial use. The main feature of the PCU is its global control strategy which enables the system to be configured by a single stage converter. A laboratory 5 kW 3-phase prototype PCU is developed and some typical test results are presented.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"40 45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123864778","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 : 1999-12-01DOI: 10.1109/PEDS.1999.792800
K. Cheng, Y. Yeung
Most of the soft-switching power converters, especially zero-current switching resonant converters, are required to vary switching frequency to control their output voltage. A family of newly designed zero-current switching fixed frequency square wave resonant converters is proposed. The output voltage of these converters can be controlled by the on-state period of a semiconductor switch; and therefore, they can be operated at a fixed switching frequency. All of the switching devices are in the zero-current switching condition. Also, the peak current of each switching device is minimized. Computer simulation and experimental results are presented to support the operation of the converters.
{"title":"Investigation of zero-current switching fixed frequency resonant-transition square wave converters","authors":"K. Cheng, Y. Yeung","doi":"10.1109/PEDS.1999.792800","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792800","url":null,"abstract":"Most of the soft-switching power converters, especially zero-current switching resonant converters, are required to vary switching frequency to control their output voltage. A family of newly designed zero-current switching fixed frequency square wave resonant converters is proposed. The output voltage of these converters can be controlled by the on-state period of a semiconductor switch; and therefore, they can be operated at a fixed switching frequency. All of the switching devices are in the zero-current switching condition. Also, the peak current of each switching device is minimized. Computer simulation and experimental results are presented to support the operation of the converters.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134213447","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 : 1999-12-01DOI: 10.1109/PEDS.1999.794615
Inkyu Lee, Sungjin Choi, Kyu-Chan Lee, B. Cho
This paper presents design and analysis of an HID lamp ballast for fast turn on characteristics and stable operation. It produces a high open circuit voltage for the ignition and it is controlled to effectively supply the power required to shorten the warm-up period after the breakdown. The lamp modeling by empirical data is presented. It is very effective in the design of the control loop in the steady-state operating region. A stable operation of the lamp power regulation in the steady state is achieved, which is crucial for the long life time and constant light output. Stability analysis of the system is performed and the results are verified through various simulation results and the hardware experiments.
{"title":"Modeling and control of automotive HID lamp ballast","authors":"Inkyu Lee, Sungjin Choi, Kyu-Chan Lee, B. Cho","doi":"10.1109/PEDS.1999.794615","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794615","url":null,"abstract":"This paper presents design and analysis of an HID lamp ballast for fast turn on characteristics and stable operation. It produces a high open circuit voltage for the ignition and it is controlled to effectively supply the power required to shorten the warm-up period after the breakdown. The lamp modeling by empirical data is presented. It is very effective in the design of the control loop in the steady-state operating region. A stable operation of the lamp power regulation in the steady state is achieved, which is crucial for the long life time and constant light output. Stability analysis of the system is performed and the results are verified through various simulation results and the hardware experiments.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114630551","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 : 1999-12-01DOI: 10.1109/PEDS.1999.792846
Jiann-Fuh Chen, Y. Kuo, T. Liang
In this paper, the voltage and current hybrid PWM inverters using the variable structure control technique is proposed for parallel operation. The voltage-controlled PWM inverter (VCPI) unit is developed to provide a specific sinusoidal output voltage and the current-controlled PWM inverter (CCPI) units are employed to track the distributive current. Each of the VCPI and CCPI units can be operated independently. By using the variable structure control scheme, the parallel inverters can provide excellent performance without the phase-lock-loop (PLL) circuit for synchronization. The proposed scheme can result in fast dynamic response and robustness to parameter variations. Finally, simulation results are performed to verify the proposed control scheme.
{"title":"Voltage and current hybrid controlled PWM inverters using variable structure control","authors":"Jiann-Fuh Chen, Y. Kuo, T. Liang","doi":"10.1109/PEDS.1999.792846","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792846","url":null,"abstract":"In this paper, the voltage and current hybrid PWM inverters using the variable structure control technique is proposed for parallel operation. The voltage-controlled PWM inverter (VCPI) unit is developed to provide a specific sinusoidal output voltage and the current-controlled PWM inverter (CCPI) units are employed to track the distributive current. Each of the VCPI and CCPI units can be operated independently. By using the variable structure control scheme, the parallel inverters can provide excellent performance without the phase-lock-loop (PLL) circuit for synchronization. The proposed scheme can result in fast dynamic response and robustness to parameter variations. Finally, simulation results are performed to verify the proposed control scheme.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115524525","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 : 1999-12-01DOI: 10.1109/PEDS.1999.792834
T. Liang, Jiann-Fuh Chen, J. Shyu
A novel multi-random PWM technique (MRPWM) for voltage-controlled inverter is proposed in this paper. The multi-random PWM strategy employs the pulse position and starting time random processes. The proposed multi-random PWM scheme shows that both low-order and high-order harmonics are well suppressed compared with the conventional single random PWM scheme (SRPWM). The experimental results are presented to verify the performance of the proposed MRPWM scheme.
{"title":"Novel multi-random PWM technique for inverter design","authors":"T. Liang, Jiann-Fuh Chen, J. Shyu","doi":"10.1109/PEDS.1999.792834","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792834","url":null,"abstract":"A novel multi-random PWM technique (MRPWM) for voltage-controlled inverter is proposed in this paper. The multi-random PWM strategy employs the pulse position and starting time random processes. The proposed multi-random PWM scheme shows that both low-order and high-order harmonics are well suppressed compared with the conventional single random PWM scheme (SRPWM). The experimental results are presented to verify the performance of the proposed MRPWM scheme.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"305 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124283772","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 : 1999-10-01DOI: 10.1109/PEDS.1999.794554
S. Mekhilef, N. Rahim, A. Omar
This paper presents a theoretical analysis and practical implementation of the natural and regular (symmetric, asymmetric) sampled three-phase PWM waveform, which was digitally implemented on a microprocessor, and the essential considerations involved in the feasibility of using a microprocessor software-based calculation to generate PWM. All the necessary microprocessor hardware/software techniques and algorithms required to generate three-phase PWM are developed in detail, and demonstrated using practical results from an experimental microprocessor board. The techniques developed and presented in this paper are readily applicable to other currently available microprocessors, with minor modifications to reflect the special features of the particular microprocessor used. Particular emphasis has been placed on the basic concepts and principles, rather than concentrating on the details of a particular microprocessor.
{"title":"Microprocessor implementation of three phase PWM switching strategies","authors":"S. Mekhilef, N. Rahim, A. Omar","doi":"10.1109/PEDS.1999.794554","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794554","url":null,"abstract":"This paper presents a theoretical analysis and practical implementation of the natural and regular (symmetric, asymmetric) sampled three-phase PWM waveform, which was digitally implemented on a microprocessor, and the essential considerations involved in the feasibility of using a microprocessor software-based calculation to generate PWM. All the necessary microprocessor hardware/software techniques and algorithms required to generate three-phase PWM are developed in detail, and demonstrated using practical results from an experimental microprocessor board. The techniques developed and presented in this paper are readily applicable to other currently available microprocessors, with minor modifications to reflect the special features of the particular microprocessor used. Particular emphasis has been placed on the basic concepts and principles, rather than concentrating on the details of a particular microprocessor.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126785001","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 : 1999-07-27DOI: 10.1109/PEDS.1999.794543
S. Wekhande, V. Agarwal
The paper deals with a variable speed, constant voltage controller for induction generator operating in self excited mode. A new PWM controller is proposed to regulate the induction generator terminal voltage. The proposed controller regulates three-phase AC output voltage of the self-excited induction generator with varying rotor speed, transient load conditions and reactive loads. The proposed scheme does not require any real time computations for calculating excitation current, thus minimizing the electronic hardware and the cost of the controller. A simple overcurrent protection is incorporated to protect the inverter switches. Computer simulation and experimental results show satisfactory operation of an induction generator with proposed control scheme.
{"title":"A variable speed constant voltage controller for self-excited induction generator with minimum control requirements","authors":"S. Wekhande, V. Agarwal","doi":"10.1109/PEDS.1999.794543","DOIUrl":"https://doi.org/10.1109/PEDS.1999.794543","url":null,"abstract":"The paper deals with a variable speed, constant voltage controller for induction generator operating in self excited mode. A new PWM controller is proposed to regulate the induction generator terminal voltage. The proposed controller regulates three-phase AC output voltage of the self-excited induction generator with varying rotor speed, transient load conditions and reactive loads. The proposed scheme does not require any real time computations for calculating excitation current, thus minimizing the electronic hardware and the cost of the controller. A simple overcurrent protection is incorporated to protect the inverter switches. Computer simulation and experimental results show satisfactory operation of an induction generator with proposed control scheme.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115216298","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 : 1999-07-27DOI: 10.1109/PEDS.1999.792851
Baichao Chen, J. Kokernak, D. Torrey
A single-phase controlled saturable reactor with active-filter-assisted harmonic compensation is proposed. This new technique allows the reactor to generate pure sinusoidal reactive current over the entire range of reactive power regulation. The controlled saturable reactor and active filter provide a clean, reliable and economical means of large-power, high-voltage reactive power compensation. Mathematical models of both the reactor and active-filter are established. Sliding-mode control is introduced for the filter to track and compensate for the harmonics produced by the controlled reactor. Steady state and transient simulations of the system are performed, which demonstrate the feasibility and effectiveness of this new technique.
{"title":"Harmonic-free single-phase controlled saturable reactor using active filtering","authors":"Baichao Chen, J. Kokernak, D. Torrey","doi":"10.1109/PEDS.1999.792851","DOIUrl":"https://doi.org/10.1109/PEDS.1999.792851","url":null,"abstract":"A single-phase controlled saturable reactor with active-filter-assisted harmonic compensation is proposed. This new technique allows the reactor to generate pure sinusoidal reactive current over the entire range of reactive power regulation. The controlled saturable reactor and active filter provide a clean, reliable and economical means of large-power, high-voltage reactive power compensation. Mathematical models of both the reactor and active-filter are established. Sliding-mode control is introduced for the filter to track and compensate for the harmonics produced by the controlled reactor. Steady state and transient simulations of the system are performed, which demonstrate the feasibility and effectiveness of this new technique.","PeriodicalId":254764,"journal":{"name":"Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122172737","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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