Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487680
B. Singh, V. Garg, G. Bhuvaneswari
This paper deals with a reduced rating delta-polygon autotransformer based twenty-four-pulse AC-DC converter feeding variable frequency induction motor drives (VFIMD's) for improving power quality at the point of common coupling (PCC). The proposed twenty four-pulse ac-dc converter is realized on the principle of dc ripple re-injection technique for harmonic mitigation. The design of the proposed autotransformer is developed along with the necessary modifications required for making it suitable for retrofit applications, where presently a 6-pulse diode bridge rectifier is used. The effect of load variation on VFIMD is also studied to demonstrate the effectiveness of the proposed ac-dc converter. The extensive tests are conducted on the developed prototype autotransformer based ac-dc converters. Different power quality indices of 6-pulse, 12-pulse and proposed 24-pulse ac-dc converters are obtained from simulation and verified from experimental results.
{"title":"Design and Development of Autotransformer Based 24-Pulse AC-DC Converter fed Induction Motor Drive","authors":"B. Singh, V. Garg, G. Bhuvaneswari","doi":"10.1109/PEDS.2007.4487680","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487680","url":null,"abstract":"This paper deals with a reduced rating delta-polygon autotransformer based twenty-four-pulse AC-DC converter feeding variable frequency induction motor drives (VFIMD's) for improving power quality at the point of common coupling (PCC). The proposed twenty four-pulse ac-dc converter is realized on the principle of dc ripple re-injection technique for harmonic mitigation. The design of the proposed autotransformer is developed along with the necessary modifications required for making it suitable for retrofit applications, where presently a 6-pulse diode bridge rectifier is used. The effect of load variation on VFIMD is also studied to demonstrate the effectiveness of the proposed ac-dc converter. The extensive tests are conducted on the developed prototype autotransformer based ac-dc converters. Different power quality indices of 6-pulse, 12-pulse and proposed 24-pulse ac-dc converters are obtained from simulation and verified from experimental results.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126529267","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487696
S.T. Yun, J. Sim, J.H. Park, S. Choi, B. Cho
this paper proposes a new method eliminating external effect from (load, temperature) variation on a Piezoelectric Transformer (PT) converter by utilizing the phase-locked loop (PLL) modulation technique. The PLL control scheme involves detecting phase difference between injected sinusoidal signal and demodulated terminal voltage of PT. Generally, frequency control method decreases the efficiency of PT in wide input range. And, duty cycle control method has a problem of insufficient operating range for the load variation. In other to overcome these problems, this paper introduces a two loop control (PWM and PLL) with PT which provides wide ZVS condition nearly independent of the load variation, and excellent line regulation for the universal input voltage and load range. The performance of the proposed control method is verified by experimental result with 40 [W] DC/DC converter hardware prototypes.
{"title":"Adaptive Phase Control Method for Load Variation of Resonant Converter with Piezoelectric Transformer","authors":"S.T. Yun, J. Sim, J.H. Park, S. Choi, B. Cho","doi":"10.1109/PEDS.2007.4487696","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487696","url":null,"abstract":"this paper proposes a new method eliminating external effect from (load, temperature) variation on a Piezoelectric Transformer (PT) converter by utilizing the phase-locked loop (PLL) modulation technique. The PLL control scheme involves detecting phase difference between injected sinusoidal signal and demodulated terminal voltage of PT. Generally, frequency control method decreases the efficiency of PT in wide input range. And, duty cycle control method has a problem of insufficient operating range for the load variation. In other to overcome these problems, this paper introduces a two loop control (PWM and PLL) with PT which provides wide ZVS condition nearly independent of the load variation, and excellent line regulation for the universal input voltage and load range. The performance of the proposed control method is verified by experimental result with 40 [W] DC/DC converter hardware prototypes.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123110315","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487756
E. Tedeschi, P. Tenti, P. Mattavelli
The paper describes an approach to cooperative control of multiple active compensators acting in the same network. The goal is to take full advantage of the installed harmonic and reactive compensation capability to optimize the operation at the point of common coupling, even in presence of non-sinusoidal voltage supply and distorting loads. The cooperative operation is based on the conservation of instantaneous complex power, a quantity which envelopes power and energy information of the related electrical network. Based on the properties of instantaneous complex power, a synergistic control technique of thyristor-controlled reactive compensators and active power filters is derived, which sets the basis for cooperative operation.
{"title":"Cooperative Operation of Active Power Filters by Instantaneous Complex Power Control","authors":"E. Tedeschi, P. Tenti, P. Mattavelli","doi":"10.1109/PEDS.2007.4487756","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487756","url":null,"abstract":"The paper describes an approach to cooperative control of multiple active compensators acting in the same network. The goal is to take full advantage of the installed harmonic and reactive compensation capability to optimize the operation at the point of common coupling, even in presence of non-sinusoidal voltage supply and distorting loads. The cooperative operation is based on the conservation of instantaneous complex power, a quantity which envelopes power and energy information of the related electrical network. Based on the properties of instantaneous complex power, a synergistic control technique of thyristor-controlled reactive compensators and active power filters is derived, which sets the basis for cooperative operation.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126109692","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487896
Chien-Ming Wang, C. Su, Chang-Hua Lin, Maw-Yang Liu, Kuo-Lun Fang
This paper proposes a novel high performance single-stage voltage regulator to give high input power factor and low current distortion on the rectifier side and provide clean and stable ac voltage on the inverter side. The proposed voltage regulator only employs four switches to perform the power factor correction in input side and provide regulation of the output ac voltage magnitude. Thus, its cost is lower than the others. It has a common arm between the rectifier and inverter, and adopts an appropriate switching strategy. A significant reduction in the conduction losses is achieved, since the rectifier in the proposed converter uses a single converter instead of the conventional configuration composed of a four-diode front- end rectifier followed by a boost converter. An average- current-mode control is employed in the rectifier side of proposed converter to synthesize a suitable low harmonics sinusoidal waveform for the input current. The sinusoidal pulse-width modulation (SPWM) control strategy is employed in the inverter of proposed converter to achieve well dynamic regulation. A design example of 1000 W single- phase voltage regulator is examined to assess its performance.
{"title":"High Performance Single-Phase Voltage Regulator with a Simple Circuit Topology","authors":"Chien-Ming Wang, C. Su, Chang-Hua Lin, Maw-Yang Liu, Kuo-Lun Fang","doi":"10.1109/PEDS.2007.4487896","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487896","url":null,"abstract":"This paper proposes a novel high performance single-stage voltage regulator to give high input power factor and low current distortion on the rectifier side and provide clean and stable ac voltage on the inverter side. The proposed voltage regulator only employs four switches to perform the power factor correction in input side and provide regulation of the output ac voltage magnitude. Thus, its cost is lower than the others. It has a common arm between the rectifier and inverter, and adopts an appropriate switching strategy. A significant reduction in the conduction losses is achieved, since the rectifier in the proposed converter uses a single converter instead of the conventional configuration composed of a four-diode front- end rectifier followed by a boost converter. An average- current-mode control is employed in the rectifier side of proposed converter to synthesize a suitable low harmonics sinusoidal waveform for the input current. The sinusoidal pulse-width modulation (SPWM) control strategy is employed in the inverter of proposed converter to achieve well dynamic regulation. A design example of 1000 W single- phase voltage regulator is examined to assess its performance.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"318 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114104870","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487910
S. Ayob, Z. Salam, N. A. Azli
This paper presents an analysis on piecewise linear control surface for a single-input nonlinear PI Fuzzy controller. The analysis is carried out to determine the conditions that should be met in order for the piecewise linear control surface approximation to be validated. An equivalent two-input Pi-Fuzzy with conventional fuzzification, inference and deffuzification process is built for verification purpose and both controllers are then applied to a single phase inverter system. The dynamic response of both controllers are examined and compared. From the simulation results, it is shown that the approximation is valid.
{"title":"Piecewise Linear Control Surface for Single Input Nonlinear PI-Fuzzy Controller","authors":"S. Ayob, Z. Salam, N. A. Azli","doi":"10.1109/PEDS.2007.4487910","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487910","url":null,"abstract":"This paper presents an analysis on piecewise linear control surface for a single-input nonlinear PI Fuzzy controller. The analysis is carried out to determine the conditions that should be met in order for the piecewise linear control surface approximation to be validated. An equivalent two-input Pi-Fuzzy with conventional fuzzification, inference and deffuzification process is built for verification purpose and both controllers are then applied to a single phase inverter system. The dynamic response of both controllers are examined and compared. From the simulation results, it is shown that the approximation is valid.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125091456","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487766
H. Desai, H. K. Patel
Use of solar energy using photovoltaic (PV) arrays is emphasized increasingly and regarded as an important resource of power energy in the coming years. As the power supplied by PV arrays depends upon the insolation, temperature and array voltage, it is necessary to control the operating point to extract the maximum power from the PV arrays. Number of methods for maximum power point tracking (MPPT) has been reported in the literature. This paper aims to give a comprehensive comparison of different MPPT algorithms in terms of their tracking efficiencies, cost effectiveness, complexity of realization etc. Here the methods are classified according to the parameters they use in finding MPP, viz, PV voltage, PV current, output voltage, and output current.
{"title":"Maximum Power Point Algorithm in PV Generation: An Overview","authors":"H. Desai, H. K. Patel","doi":"10.1109/PEDS.2007.4487766","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487766","url":null,"abstract":"Use of solar energy using photovoltaic (PV) arrays is emphasized increasingly and regarded as an important resource of power energy in the coming years. As the power supplied by PV arrays depends upon the insolation, temperature and array voltage, it is necessary to control the operating point to extract the maximum power from the PV arrays. Number of methods for maximum power point tracking (MPPT) has been reported in the literature. This paper aims to give a comprehensive comparison of different MPPT algorithms in terms of their tracking efficiencies, cost effectiveness, complexity of realization etc. Here the methods are classified according to the parameters they use in finding MPP, viz, PV voltage, PV current, output voltage, and output current.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122422604","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487717
Z. Idris, M. K. Hamzah, A. Saparon, N. R. Hamzah, N. Dahlan
This paper is concerned on FPGA design for control implementations of the single-phase matrix converter (SPMQ operating as a cycloconverter. The sinusoidal pulse width modulation (SPWM) technique is used to synthesize the output voltage. The power circuit uses the insulated gate bipolar transistor (IGBT) as switching device in the SPMC implementation. Safe-commutation strategy was incorporated to solve switching transients. A Xilinx field programmable gate array (FPGA) was used at the heart of the control electronics, implemented to verify operation with selected simulation and experimental results presented.
{"title":"FPGA Design of Single-phase Matrix Converter Operating as Cycloconverter","authors":"Z. Idris, M. K. Hamzah, A. Saparon, N. R. Hamzah, N. Dahlan","doi":"10.1109/PEDS.2007.4487717","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487717","url":null,"abstract":"This paper is concerned on FPGA design for control implementations of the single-phase matrix converter (SPMQ operating as a cycloconverter. The sinusoidal pulse width modulation (SPWM) technique is used to synthesize the output voltage. The power circuit uses the insulated gate bipolar transistor (IGBT) as switching device in the SPMC implementation. Safe-commutation strategy was incorporated to solve switching transients. A Xilinx field programmable gate array (FPGA) was used at the heart of the control electronics, implemented to verify operation with selected simulation and experimental results presented.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122704010","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487748
H. Brauer, M. Hennen, R. D. De Doncker
Instantaneous torque control for switched-reluctance-machines (SRMs) with an arbitrary number of phases is introduced in this paper. Direct portability of this control to machines with any number of phases is achieved by the developed multiphase-torque-sharing concept. This concept is also necessary for SRMs where maximum torque can only be achieved by phase overlap of more than two phases. Furthermore, a new torque-sharing strategy for predictive PWM-DITC is presented that minimizes losses in the machine without use of pre-computed current or torque profiles. This low-loss-commutation strategy also works without fixed switching angles.
{"title":"Multiphase Torque-Sharing Concepts of Predictive PWM-DITC for SRM","authors":"H. Brauer, M. Hennen, R. D. De Doncker","doi":"10.1109/PEDS.2007.4487748","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487748","url":null,"abstract":"Instantaneous torque control for switched-reluctance-machines (SRMs) with an arbitrary number of phases is introduced in this paper. Direct portability of this control to machines with any number of phases is achieved by the developed multiphase-torque-sharing concept. This concept is also necessary for SRMs where maximum torque can only be achieved by phase overlap of more than two phases. Furthermore, a new torque-sharing strategy for predictive PWM-DITC is presented that minimizes losses in the machine without use of pre-computed current or torque profiles. This low-loss-commutation strategy also works without fixed switching angles.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131115330","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487849
W. Khan-ngern
This paper presents the design technique of a bidirectional power flow DC-DC converter for two power sources. The power sources are composed of Proton Exchange Membrane Fuel Cells (PEMFCs) and the Nickel Metal Hydride (Ni-MH) batteries. A single DC-DC Converter is designed for both of motoring and generating modes of the DC motor load condition. Charging and discharging operating modes of NI-MH are focused. The PSpice simulated result confirms a good achievement of the energy management.
{"title":"Design of a Single Bi-directional DC-DC Converter for On-board Energy Improving of Zero Emission Electric Vehicles","authors":"W. Khan-ngern","doi":"10.1109/PEDS.2007.4487849","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487849","url":null,"abstract":"This paper presents the design technique of a bidirectional power flow DC-DC converter for two power sources. The power sources are composed of Proton Exchange Membrane Fuel Cells (PEMFCs) and the Nickel Metal Hydride (Ni-MH) batteries. A single DC-DC Converter is designed for both of motoring and generating modes of the DC motor load condition. Charging and discharging operating modes of NI-MH are focused. The PSpice simulated result confirms a good achievement of the energy management.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131183692","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 : 2007-11-01DOI: 10.1109/PEDS.2007.4487842
E. Rossouw, M. Kamper
Low power, low cost wind energy systems make use of uncontrolled, direct battery charging where the generator is directly connected to the battery via a diode rectifier. Air-cored axial flux permanent magnet (AFPM) generators, although excellently suited for small wind energy systems, can not be used in direct battery charging systems as optimum turbine power matching is not obtained and non-sinusoidal currents are drawn due to the rectifier; with non-sinusoidal currents these generators are shown to become extremely noisy. In this paper a method is analysed whereby better maximum power matching and sinusoidal currents are obtained using AFPM generators in direct battery charging wind energy systems.
{"title":"Use of Air-Cored Axial Flux Permanent Magnet Generator in Direct Battery Charging Wind Energy Systems","authors":"E. Rossouw, M. Kamper","doi":"10.1109/PEDS.2007.4487842","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487842","url":null,"abstract":"Low power, low cost wind energy systems make use of uncontrolled, direct battery charging where the generator is directly connected to the battery via a diode rectifier. Air-cored axial flux permanent magnet (AFPM) generators, although excellently suited for small wind energy systems, can not be used in direct battery charging systems as optimum turbine power matching is not obtained and non-sinusoidal currents are drawn due to the rectifier; with non-sinusoidal currents these generators are shown to become extremely noisy. In this paper a method is analysed whereby better maximum power matching and sinusoidal currents are obtained using AFPM generators in direct battery charging wind energy systems.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121778781","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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