Pub Date : 2012-06-25DOI: 10.1109/PEDG.2012.6253976
T. Messo, J. Jokipii, T. Suntio
Dc-dc interfacing of photovoltaic (PV) modules into the downstream system is usually done by using a boost-power-stage converter with an added input capacitor. Its dynamic properties are often assumed to be equal to those of a conventional boost converter. The input voltage of the converter is most often feedback controlled to achieve maximum power transfer in PV applications, which actually changes the converter to be a current-fed converter. This paper will show that the boost-power-stage converter with an added input capacitor has thoroughly different dynamic properties than those of the conventional voltage-fed boost converter. The effect of input-side control on the output impedance and the mode of the output port are also discussed.
{"title":"Steady-state and dynamic properties of boost-power-stage converter in photovoltaic applications","authors":"T. Messo, J. Jokipii, T. Suntio","doi":"10.1109/PEDG.2012.6253976","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6253976","url":null,"abstract":"Dc-dc interfacing of photovoltaic (PV) modules into the downstream system is usually done by using a boost-power-stage converter with an added input capacitor. Its dynamic properties are often assumed to be equal to those of a conventional boost converter. The input voltage of the converter is most often feedback controlled to achieve maximum power transfer in PV applications, which actually changes the converter to be a current-fed converter. This paper will show that the boost-power-stage converter with an added input capacitor has thoroughly different dynamic properties than those of the conventional voltage-fed boost converter. The effect of input-side control on the output impedance and the mode of the output port are also discussed.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116908582","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254007
M. Wiboonrat
The growing of the next generation Mega Data Center (MDC) in the 21st century needs more reliable electrical power supply. The distribution generations requires smart react to demand response of MDC. While, the evolution of WiMAX communication technology enhances the way we manage power distribution system. A chain reaction of global warming imposes a variety of response included reduce carbon emission and using energy more efficiency and effectiveness. Energy-related costs, power quality, reliability have become critical factors of the major operating components in data centers. Smart Grid emerges to answer all above the questions. This research model aims to investigate emerging technologies and utility demand response of MDC after installation AMI on each data center. A case study on simulation model of advanced metering infrastructure (AMI) deployment integrated with advanced distribution management system (ADMS) and distributed generation (DG) and renewable energy (RE) as an ecosystem.
{"title":"Mega data center architecture under Smart Grid","authors":"M. Wiboonrat","doi":"10.1109/PEDG.2012.6254007","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254007","url":null,"abstract":"The growing of the next generation Mega Data Center (MDC) in the 21st century needs more reliable electrical power supply. The distribution generations requires smart react to demand response of MDC. While, the evolution of WiMAX communication technology enhances the way we manage power distribution system. A chain reaction of global warming imposes a variety of response included reduce carbon emission and using energy more efficiency and effectiveness. Energy-related costs, power quality, reliability have become critical factors of the major operating components in data centers. Smart Grid emerges to answer all above the questions. This research model aims to investigate emerging technologies and utility demand response of MDC after installation AMI on each data center. A case study on simulation model of advanced metering infrastructure (AMI) deployment integrated with advanced distribution management system (ADMS) and distributed generation (DG) and renewable energy (RE) as an ecosystem.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"906 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114424620","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254077
S. Rivera, Bin Wu, S. Kouro, Hong Wang, Donglai Zhang
The increase in the power levels of photovoltaic (PV) energy conversion systems has resulted in new large-scale grid connected configurations that have reached the megawatt level. This substantial increment in the power levels imposes new challenges to the grid interfacing converter, and therefore results in new opportunities to be explored. This work introduces a new medium voltage multilevel scheme based on a three-phase cascaded H-bridge (CHB) converter and multiple PV strings. The proposed configuration enables a large increase of the total power capacity of the PV system, while the introduction of a multilevel converter helps to improve both power quality and efficiency and medium voltage operation at the grid side. The main challenge of the proposed configuration is to handle the inherent power imbalances that occur not only between the different cells of one phase of the converter but also between the three phases. Simulation results of a 7-level CHB PV system are presented to validate the proposed topology and control method.
{"title":"Cascaded H-bridge multilevel converter topology and three-phase balance control for large scale photovoltaic systems","authors":"S. Rivera, Bin Wu, S. Kouro, Hong Wang, Donglai Zhang","doi":"10.1109/PEDG.2012.6254077","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254077","url":null,"abstract":"The increase in the power levels of photovoltaic (PV) energy conversion systems has resulted in new large-scale grid connected configurations that have reached the megawatt level. This substantial increment in the power levels imposes new challenges to the grid interfacing converter, and therefore results in new opportunities to be explored. This work introduces a new medium voltage multilevel scheme based on a three-phase cascaded H-bridge (CHB) converter and multiple PV strings. The proposed configuration enables a large increase of the total power capacity of the PV system, while the introduction of a multilevel converter helps to improve both power quality and efficiency and medium voltage operation at the grid side. The main challenge of the proposed configuration is to handle the inherent power imbalances that occur not only between the different cells of one phase of the converter but also between the three phases. Simulation results of a 7-level CHB PV system are presented to validate the proposed topology and control method.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126966141","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254017
Chongyi Tian, Chenghui Zhang, Ke Li, Xiaoguang Chu, N. Cui, Jihong Wang
A novel topology with a bi-directional DC/DC for stand-alone wind power system is adopted, which can maximize the battery life by monitoring and controlling its state of charge(soc) and charge/discharge process. According to the atmospheric conditions, the state of charge of the battery and the load conditions, six possible operation modes of the bi-directional DC/DC are also expounded. This paper proposes a hybrid control strategy with the combination of the PI control and the direct output current control to avoid the voltage surge of the DC bus caused by the mode switching. A 5kW wind power system test bench is developed to verify the effectiveness of the control strategy. The experimental results show that the voltage surge can be limited within 5% and the controller performs well in various wind speed and load conditions.
{"title":"Control strategy for bi-directional DC/DC converter of a stand-alone wind power system","authors":"Chongyi Tian, Chenghui Zhang, Ke Li, Xiaoguang Chu, N. Cui, Jihong Wang","doi":"10.1109/PEDG.2012.6254017","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254017","url":null,"abstract":"A novel topology with a bi-directional DC/DC for stand-alone wind power system is adopted, which can maximize the battery life by monitoring and controlling its state of charge(soc) and charge/discharge process. According to the atmospheric conditions, the state of charge of the battery and the load conditions, six possible operation modes of the bi-directional DC/DC are also expounded. This paper proposes a hybrid control strategy with the combination of the PI control and the direct output current control to avoid the voltage surge of the DC bus caused by the mode switching. A 5kW wind power system test bench is developed to verify the effectiveness of the control strategy. The experimental results show that the voltage surge can be limited within 5% and the controller performs well in various wind speed and load conditions.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134548967","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254059
A. D. Di Tommaso, F. Genduso, R. Miceli, G. R. Galluzzo
This paper considers the general issues in the project and the optimization of energy generation systems using small universal wind turbines, suitable in Distributed Generation (DG) and computer aided optimization for a better exploitation of wind source. Optimization in this field reveal to be more and more important because the local generation and consumption of electrical power, even for grid connected generators can suffers for unevenness of wind source exploitation, also in terms of wrong directions and in not regular wind flows. Computer aided design and optimization of small plants may give significant improvements in the development of the wind source also in accordance with the projections of future energy policies that foresee a significant increase of the wind generated energy for the future market. The effectiveness of computer aided optimization tools is illustrated in the present paper with the exposition of two case studies. In the first of them a Wind Electrical Energy Generating System is moved by a Modular Multiple Blade Fixed Pitch Wind Turbine coupled with an asynchronous wound rotor generator. In the second case study the optimization regards a Savonius wind turbine and a PM synchronous generator with particular reference to the development of wind source for the wind turbine and the reduction of saturation and of harmonic content in the emf for the electrical machines.
{"title":"Computer aided optimization via simulation tools of energy generation systems with universal small wind turbines","authors":"A. D. Di Tommaso, F. Genduso, R. Miceli, G. R. Galluzzo","doi":"10.1109/PEDG.2012.6254059","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254059","url":null,"abstract":"This paper considers the general issues in the project and the optimization of energy generation systems using small universal wind turbines, suitable in Distributed Generation (DG) and computer aided optimization for a better exploitation of wind source. Optimization in this field reveal to be more and more important because the local generation and consumption of electrical power, even for grid connected generators can suffers for unevenness of wind source exploitation, also in terms of wrong directions and in not regular wind flows. Computer aided design and optimization of small plants may give significant improvements in the development of the wind source also in accordance with the projections of future energy policies that foresee a significant increase of the wind generated energy for the future market. The effectiveness of computer aided optimization tools is illustrated in the present paper with the exposition of two case studies. In the first of them a Wind Electrical Energy Generating System is moved by a Modular Multiple Blade Fixed Pitch Wind Turbine coupled with an asynchronous wound rotor generator. In the second case study the optimization regards a Savonius wind turbine and a PM synchronous generator with particular reference to the development of wind source for the wind turbine and the reduction of saturation and of harmonic content in the emf for the electrical machines.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130133678","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254028
Y. Siwakoti, G. Town
We present the design of 3-phase transformerless grid connected Quasi Z-Source Inverter with minimal leakage current, suitable for application in solar photovoltaic systems. A modified space vector pulse width modulation technique with a reduced number of commutations per sector was used to minimize the leakage current without adding extra circuitry (filters and/or leakage current isolation/bypass circuits) in a transformerless Quasi Z-Source Inverter. Theoretical analysis of the proposed system is presented in detail and verified using Matlab Simulink®.
{"title":"Three-phase transformerless grid connected Quasi Z-Source Inverter for solar photovoltaic systems with minimal leakage current","authors":"Y. Siwakoti, G. Town","doi":"10.1109/PEDG.2012.6254028","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254028","url":null,"abstract":"We present the design of 3-phase transformerless grid connected Quasi Z-Source Inverter with minimal leakage current, suitable for application in solar photovoltaic systems. A modified space vector pulse width modulation technique with a reduced number of commutations per sector was used to minimize the leakage current without adding extra circuitry (filters and/or leakage current isolation/bypass circuits) in a transformerless Quasi Z-Source Inverter. Theoretical analysis of the proposed system is presented in detail and verified using Matlab Simulink®.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129960989","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254005
J. Moia, J. Lago, A. Perin, M. Heldwein
Dc active distribution networks seem to be a technically viable solution where high transmission efficiency, power quality, reliability and distributed generation are required. Modern power conversion devices are to be employed in order to create such networks by connecting them to three-phase ac power systems. This work present the evaluation of two-level and three-level (NPC) bidirectional voltage source rectifier topologies for bipolar dc active networks from the perspective of power semiconductor efforts, efficiency, volume and weight. The evaluation methodology based on the rotating reference frame is used in the analysis of a 160 kVA NPC converter feeding unbalanced dc loads and the impact of this in the converter volume and weight is presented. Furthermore, the maximum dc-side load unbalance for the NPC rectifier is derived.
{"title":"Comparison of three-phase PWM rectifiers to interface Ac grids and bipolar Dc active distribution networks","authors":"J. Moia, J. Lago, A. Perin, M. Heldwein","doi":"10.1109/PEDG.2012.6254005","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254005","url":null,"abstract":"Dc active distribution networks seem to be a technically viable solution where high transmission efficiency, power quality, reliability and distributed generation are required. Modern power conversion devices are to be employed in order to create such networks by connecting them to three-phase ac power systems. This work present the evaluation of two-level and three-level (NPC) bidirectional voltage source rectifier topologies for bipolar dc active networks from the perspective of power semiconductor efforts, efficiency, volume and weight. The evaluation methodology based on the rotating reference frame is used in the analysis of a 160 kVA NPC converter feeding unbalanced dc loads and the impact of this in the converter volume and weight is presented. Furthermore, the maximum dc-side load unbalance for the NPC rectifier is derived.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"303-304 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130832926","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254061
G. Konstantinou, S. R. Pulikanti, V. Agelidis
The flying capacitor (FC) based active neutral point clamped (ANPC) converter is a hybrid multilevel converter topology, as a combination of the three-level ANPC converter and a number of FC cells. This paper presents a generalized modulator for the seven-level FC based ANPC converter. The proposed modulator is applied independently in each phase of the converter and selects the switching states based on the deviation of the FC voltages from the reference value in order to maintain the FCs and the neutral point voltage of the converter balanced. The modulator is independent of the modulation technique selected for the converter and can operate under both sinusoidal and selective harmonic elimination pulse width modulation. Simulation results for both modulation techniques indicate the operation of the converter while regulating the FC and NP voltages to their references under steady state and dynamic changes and illustrate its effectiveness.
{"title":"Generalized modulator for the seven-level flying capacitor based active neutral point clamped converter","authors":"G. Konstantinou, S. R. Pulikanti, V. Agelidis","doi":"10.1109/PEDG.2012.6254061","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254061","url":null,"abstract":"The flying capacitor (FC) based active neutral point clamped (ANPC) converter is a hybrid multilevel converter topology, as a combination of the three-level ANPC converter and a number of FC cells. This paper presents a generalized modulator for the seven-level FC based ANPC converter. The proposed modulator is applied independently in each phase of the converter and selects the switching states based on the deviation of the FC voltages from the reference value in order to maintain the FCs and the neutral point voltage of the converter balanced. The modulator is independent of the modulation technique selected for the converter and can operate under both sinusoidal and selective harmonic elimination pulse width modulation. Simulation results for both modulation techniques indicate the operation of the converter while regulating the FC and NP voltages to their references under steady state and dynamic changes and illustrate its effectiveness.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127518604","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254089
Bogdan-Ionut Craciun, D. Sera, E. A. Man, T. Kerekes, V. Muresan, Remus Teodorescu
The growth of world energy demand and the environmental concerns lead to an increase of renewable energy production over the last decade. The increased number of grid-connected photovoltaic (PV) systems gave rise to problems concerning the stability and safety of the utility grid, as well as power quality issues. Lately, PV generators are required, according to the new German Grid Code (GC), to contribute to the grid stability and to provide grid classical functions during normal and abnormal operation. The purpose of this article is to investigate and optimize the standard voltage regulation methods for low voltage (LV) grid-connected PV systems. Reactive power supply strategy proposed by the German GC Q(U) is investigated and simulated performing load flow analysis on a European residential network benchmark. In order to improve the reactive power transfer in the system, an optimized algorithm of voltage regulation is designed with the aim of minimizing the losses in the system for a better integration of PV power generation into the grid.
{"title":"Improved voltage regulation strategies by PV inverters in LV rural networks","authors":"Bogdan-Ionut Craciun, D. Sera, E. A. Man, T. Kerekes, V. Muresan, Remus Teodorescu","doi":"10.1109/PEDG.2012.6254089","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254089","url":null,"abstract":"The growth of world energy demand and the environmental concerns lead to an increase of renewable energy production over the last decade. The increased number of grid-connected photovoltaic (PV) systems gave rise to problems concerning the stability and safety of the utility grid, as well as power quality issues. Lately, PV generators are required, according to the new German Grid Code (GC), to contribute to the grid stability and to provide grid classical functions during normal and abnormal operation. The purpose of this article is to investigate and optimize the standard voltage regulation methods for low voltage (LV) grid-connected PV systems. Reactive power supply strategy proposed by the German GC Q(U) is investigated and simulated performing load flow analysis on a European residential network benchmark. In order to improve the reactive power transfer in the system, an optimized algorithm of voltage regulation is designed with the aim of minimizing the losses in the system for a better integration of PV power generation into the grid.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128021162","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 : 2012-06-25DOI: 10.1109/PEDG.2012.6254026
Kiwoo Park, Zhe Chen
This paper presents a new self-tuning fuzzy logic control (FLC) based speed controller of a switched reluctance generator (SRG) for wind power applications. Due to its doubly salient structure and magnetic saturation, the SRG possesses an inherent characteristic of strong nonlinearity. In addition, its flux linkage, inductance, and torque are highly coupled with the rotor position and phase current. All these features make the application of traditional controllers to the SRG difficult and unsatisfactory. The proposed controller consists of three main parts: turn-on and turn-off angle determination, self-tuning FLC for speed control, and a current controller. The turn-on and turn-off angle determination, as its name implies, controls the turn-on and turn-off angles of power switches to improve the efficiency and torque regulation of the SRG. The self-tuning FLC is the speed controller which has better adaptability than a traditional controller so that it provides better performance over a wide range of operating conditions. The current controller is basically a hysteresis controller which controls the phase current in accordance with the turn-on and turn-off angles. Simulation results are shown to verify the effectiveness of the proposed controller.
{"title":"Self-tuning fuzzy logic control of a switched reluctance generator for wind energy applications","authors":"Kiwoo Park, Zhe Chen","doi":"10.1109/PEDG.2012.6254026","DOIUrl":"https://doi.org/10.1109/PEDG.2012.6254026","url":null,"abstract":"This paper presents a new self-tuning fuzzy logic control (FLC) based speed controller of a switched reluctance generator (SRG) for wind power applications. Due to its doubly salient structure and magnetic saturation, the SRG possesses an inherent characteristic of strong nonlinearity. In addition, its flux linkage, inductance, and torque are highly coupled with the rotor position and phase current. All these features make the application of traditional controllers to the SRG difficult and unsatisfactory. The proposed controller consists of three main parts: turn-on and turn-off angle determination, self-tuning FLC for speed control, and a current controller. The turn-on and turn-off angle determination, as its name implies, controls the turn-on and turn-off angles of power switches to improve the efficiency and torque regulation of the SRG. The self-tuning FLC is the speed controller which has better adaptability than a traditional controller so that it provides better performance over a wide range of operating conditions. The current controller is basically a hysteresis controller which controls the phase current in accordance with the turn-on and turn-off angles. Simulation results are shown to verify the effectiveness of the proposed controller.","PeriodicalId":146438,"journal":{"name":"2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116822684","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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