To exploit the power of high altitude winds, a novel Airborne Floating Circular Wind Energy Gener... more To exploit the power of high altitude winds, a novel Airborne Floating Circular Wind Energy Generation System (AFCWEGS) is proposed. The proposed AFCWEGS consists of four parts: 1) main body, 2) flying kites, 3) conductive tether, and 4) a ground station. The conductive tether anchors the main body to the ground station. The flying kites are tethered to the floating circular main body and rotate it. By rotation of main body a generator will generate electrical energy. The generated electrical energy will be transmitted to a ground station. The lifting and the power generation systems of the AFCWEGS are independent and don not relay on together. All parts of the AFCWEGS are described in details. Moreover, an aerostatic analysis is performed to calculate the cross sectional area of the tether as well as the required volume for the main body. Also, the output power of AFCWEGS is estimated. To validate the proposed wind energy generation system a small prototype has been constructed and implemented. Obtained experimental data confirm the effectiveness of the proposed AFCWEGS.
2nd International Conference on the Developments in Renewable Energy Technology (ICDRET 2012), Feb 21, 2012
ABSTRACT A novel hybrid-kite (HK) for harnessing powerful and persistent high altitude winds is p... more ABSTRACT A novel hybrid-kite (HK) for harnessing powerful and persistent high altitude winds is proposed. The surface of HK constructed of an array of small units. Each unit consists of four rotors and two generator can captures wind power and converting to electrical power while its drag coefficients is controllable. A conductive tether anchors the kite to the ground station for both transmission of generated electrical power by the units and driving a ground-based generator. Spit of conventional kites, due to construction of surface of HK with such units, it not required to change the kit's pith angle to control its drag coefficient, results in a liner flying path and elimination of crosswind motion. In ascending phase of the HK, units are controlled to have maximum drag to provide pulling force to drive the ground-bead generator. But in the descending phase, the units generate power with minimum drag coefficient. Estimation of electrical output power of the proposed kite is presented using parametrical approaches. A small prototype was constructed and tested, and the obtained results are compared with predicted data. Also, estimation of a HK with area of 150m2 is predicted and compared with extract power with a conventional kite with same area.
In this article, a comprehensive strategy for real time fault diagnosis, segment determination, c... more In this article, a comprehensive strategy for real time fault diagnosis, segment determination, clustering and observing in floating wind farm (FWF) is presented. The proposed strategy is designed using the concepts of differential protection, current rectification during fault happening, and Artificial Intelligence (AI) tools. For categorization of the rectified current a parameter is defined used for fault clustering. The strategy can diagnose, categorize, locate, and fully observe the faulted reinforce cable connecting the floating wind farm to ground station. To validate the proposed strategy several simulations are obtained using MATLAB software package. The simulation validated the effectiveness of the proposed protection strategy.
In this article, a comprehensive strategy for real time fault diagnosis, segment determination, c... more In this article, a comprehensive strategy for real time fault diagnosis, segment determination, clustering and observing in floating wind farm (FWF) is presented. The proposed strategy is designed using the concepts of differential protection, current rectification during fault happening, and Artificial Intelligence (AI) tools. For categorization of the rectified current a parameter is defined used for fault clustering. The strategy can diagnose, categorize, locate, and fully observe the faulted reinforce cable connecting the floating wind farm to ground station. To validate the proposed strategy several simulations are obtained using MATLAB software package. The simulation validated the effectiveness of the proposed protection strategy.
To harness the wasted kinetic energy of vehicle flow in speed-breakers of streets, a novel Speed-... more To harness the wasted kinetic energy of vehicle flow in speed-breakers of streets, a novel Speed-Breaker Generator (SBG) proposed. The SBG uses an efficient linear topology with two independent translators can be pushed down by vehicle wheel to absorb kinetic energy of the vehicles. The proposed topology is modeled using an analytical approach. An efficient design is achieved using a multistage design procedure. To verify efficiency of the obtained design simulation are carried out using finite element analysis software package. The simulations confirm the effectiveness of the obtained design and the proposed SBG.
A novel software for controlling the AWEGS is designed. Also, a novel approach for modeling of ea... more A novel software for controlling the AWEGS is designed. Also, a novel approach for modeling of each Wind Energy Generation System (WEGS) is proposed. Based on the proposed model, a novel concept for enhancement of efficiency of WECSs is proposed. An Airborne Wind Energy Generation System (AWEGS) is modeled, modified using the proposed concept. The extracted power by the modified AWEGS is estimated using analytical approaches. To verify the effectiveness of the modified AWEGS, a small prototype is manufactured, and an experiment is carried out. The obtained results confirm the predicted results, and demonstrated the effectiveness of the modified AWEGS and the proposed concept for modification of the AWEGSs. Index Terms —AWEGS; WEGS, High Altitude tethered wind turbine system; High altitude winds
To exploit the power of high altitude winds, a novel Airborne Floating Circular Wind Energy Gener... more To exploit the power of high altitude winds, a novel Airborne Floating Circular Wind Energy Generation System (AFCWEGS) is proposed. The proposed AFCWEGS consists of four parts: 1) main body, 2) flying kites, 3) conductive tether, and 4) a ground station. The conductive tether anchors the main body to the ground station. The flying kites are tethered to the floating circular main body and rotate it. By rotation of main body a generator will generate electrical energy. The generated electrical energy will be transmitted to a ground station. The lifting and the power generation systems of the AFCWEGS are independent and don not relay on together. All parts of the AFCWEGS are described in details. Moreover, an aerostatic analysis is performed to calculate the cross sectional area of the tether as well as the required volume for the main body. Also, the output power of AFCWEGS is estimated. To validate the proposed wind energy generation system a small prototype has been constructed and...
The increasing trend of world energy consumption cause to an active movement to find new resource... more The increasing trend of world energy consumption cause to an active movement to find new resources of energies. The wind energy can be one of these options. In this paper, Small Scale Wind Energy Generation Schemes for Smart Grid Using FACTS Technology is presented. Moreover, due to novelty of such new resource of energy, two schemes is presented. Moreover, an efficient generator topology equipped with a novel control strategy can be used to achieve an efficient high altitude wind energy generation system with a high stability and reliability in electric grid systems is proposed. Flexible AC Transmission Systems (FACTS) technology is used to stabilize the proposed generator for a proper wind energy schemes for small energy generation applications.
ABSTRACT A novel hybrid-kite (HK) for harnessing powerful and persistent high altitude winds is p... more ABSTRACT A novel hybrid-kite (HK) for harnessing powerful and persistent high altitude winds is proposed. The surface of HK constructed of an array of small units. Each unit consists of four rotors and two generator can captures wind power and converting to electrical power while its drag coefficients is controllable. A conductive tether anchors the kite to the ground station for both transmission of generated electrical power by the units and driving a ground-based generator. Spit of conventional kites, due to construction of surface of HK with such units, it not required to change the kit's pith angle to control its drag coefficient, results in a liner flying path and elimination of crosswind motion. In ascending phase of the HK, units are controlled to have maximum drag to provide pulling force to drive the ground-bead generator. But in the descending phase, the units generate power with minimum drag coefficient. Estimation of electrical output power of the proposed kite is presented using parametrical approaches. A small prototype was constructed and tested, and the obtained results are compared with predicted data. Also, estimation of a HK with area of 150m2 is predicted and compared with extract power with a conventional kite with same area.
... A New Power Transformer Fault Diagnosis System and its Application for Wind Farms Nima Amjady... more ... A New Power Transformer Fault Diagnosis System and its Application for Wind Farms Nima Amjady1, Mehdi Hedayatshodeh2 ... REFERENCES [1] Archer CL, Jacobson MZ (2005) “ Evaluation of global wind power” J Geophys Res 110:D12110 10.1029/2004JD005462. ...
Generation System (WEGS) is proposed. Based on the proposed model, a novel concept for enhancemen... more Generation System (WEGS) is proposed. Based on the proposed model, a novel concept for enhancement of efficiency of WECSs is proposed. An Airborne Wind Energy Generation System (AWEGS) is modeled, modified using the proposed concept. The extracted power ...
A novel Axial flux Brushless Permanent magnet generator with two mechanical inputs for marine cur... more A novel Axial flux Brushless Permanent magnet generator with two mechanical inputs for marine current energy generation is proposed, and a detailed description of its construction is presented. The generator topology consists of two independent counter rotating rotors and a stator, without any brushes and slip rings for excitation system make it make a water proof generator for marine current energy generation. Also, this generator is direct drive with no need gear-box, due to high relative speed between the rotors. Moreover, all components of the generator were modeled and designed using an analytical approach. An optimum design for the generator was obtained using analytical iterative approach. To evaluate the efficiency of the obtained design, flux density simulations using a finite element software package were carried out. The obtained simulation results demonstrated the effectiveness of the proposed generator.
High altitude winds offer an enormous dense layer of energy over New York State, which can be con... more High altitude winds offer an enormous dense layer of energy over New York State, which can be considered as a cheap energy resource. This layer of energy not only can sufficiently supply this state, but also can supply all the U.S. energy needs. In this paper a High Altitude Wind Energy Generation Station (HAWEGS) with rated power of 10 GW over Catskill’s mountains in the New York State is modeled and designed. The HAWEGS consists of an array of Airborne Wind Energy Generation Systems (AWEGSs). To achieve a smooth electrical energy generation during the year with a high capacity factor, the HAWEGS is configured as three interconnected sections spaced at the same longitude. The optimum performance heights of the AWEGSs in all the sections were found. Moreover, a detailed electrical system including power transmission and energy storage was designed. Three-month resolution and annual performances of the HAWEGS were presented. The project cost and electricity price were estimated. Also...
To exploit the power of high altitude winds, a novel Airborne Floating Circular Wind Energy Gener... more To exploit the power of high altitude winds, a novel Airborne Floating Circular Wind Energy Generation System (AFCWEGS) is proposed. The proposed AFCWEGS consists of four parts: 1) main body, 2) flying kites, 3) conductive tether, and 4) a ground station. The conductive tether anchors the main body to the ground station. The flying kites are tethered to the floating circular main body and rotate it. By rotation of main body a generator will generate electrical energy. The generated electrical energy will be transmitted to a ground station. The lifting and the power generation systems of the AFCWEGS are independent and don not relay on together. All parts of the AFCWEGS are described in details. Moreover, an aerostatic analysis is performed to calculate the cross sectional area of the tether as well as the required volume for the main body. Also, the output power of AFCWEGS is estimated. To validate the proposed wind energy generation system a small prototype has been constructed and implemented. Obtained experimental data confirm the effectiveness of the proposed AFCWEGS.
2nd International Conference on the Developments in Renewable Energy Technology (ICDRET 2012), Feb 21, 2012
ABSTRACT A novel hybrid-kite (HK) for harnessing powerful and persistent high altitude winds is p... more ABSTRACT A novel hybrid-kite (HK) for harnessing powerful and persistent high altitude winds is proposed. The surface of HK constructed of an array of small units. Each unit consists of four rotors and two generator can captures wind power and converting to electrical power while its drag coefficients is controllable. A conductive tether anchors the kite to the ground station for both transmission of generated electrical power by the units and driving a ground-based generator. Spit of conventional kites, due to construction of surface of HK with such units, it not required to change the kit's pith angle to control its drag coefficient, results in a liner flying path and elimination of crosswind motion. In ascending phase of the HK, units are controlled to have maximum drag to provide pulling force to drive the ground-bead generator. But in the descending phase, the units generate power with minimum drag coefficient. Estimation of electrical output power of the proposed kite is presented using parametrical approaches. A small prototype was constructed and tested, and the obtained results are compared with predicted data. Also, estimation of a HK with area of 150m2 is predicted and compared with extract power with a conventional kite with same area.
In this article, a comprehensive strategy for real time fault diagnosis, segment determination, c... more In this article, a comprehensive strategy for real time fault diagnosis, segment determination, clustering and observing in floating wind farm (FWF) is presented. The proposed strategy is designed using the concepts of differential protection, current rectification during fault happening, and Artificial Intelligence (AI) tools. For categorization of the rectified current a parameter is defined used for fault clustering. The strategy can diagnose, categorize, locate, and fully observe the faulted reinforce cable connecting the floating wind farm to ground station. To validate the proposed strategy several simulations are obtained using MATLAB software package. The simulation validated the effectiveness of the proposed protection strategy.
In this article, a comprehensive strategy for real time fault diagnosis, segment determination, c... more In this article, a comprehensive strategy for real time fault diagnosis, segment determination, clustering and observing in floating wind farm (FWF) is presented. The proposed strategy is designed using the concepts of differential protection, current rectification during fault happening, and Artificial Intelligence (AI) tools. For categorization of the rectified current a parameter is defined used for fault clustering. The strategy can diagnose, categorize, locate, and fully observe the faulted reinforce cable connecting the floating wind farm to ground station. To validate the proposed strategy several simulations are obtained using MATLAB software package. The simulation validated the effectiveness of the proposed protection strategy.
To harness the wasted kinetic energy of vehicle flow in speed-breakers of streets, a novel Speed-... more To harness the wasted kinetic energy of vehicle flow in speed-breakers of streets, a novel Speed-Breaker Generator (SBG) proposed. The SBG uses an efficient linear topology with two independent translators can be pushed down by vehicle wheel to absorb kinetic energy of the vehicles. The proposed topology is modeled using an analytical approach. An efficient design is achieved using a multistage design procedure. To verify efficiency of the obtained design simulation are carried out using finite element analysis software package. The simulations confirm the effectiveness of the obtained design and the proposed SBG.
A novel software for controlling the AWEGS is designed. Also, a novel approach for modeling of ea... more A novel software for controlling the AWEGS is designed. Also, a novel approach for modeling of each Wind Energy Generation System (WEGS) is proposed. Based on the proposed model, a novel concept for enhancement of efficiency of WECSs is proposed. An Airborne Wind Energy Generation System (AWEGS) is modeled, modified using the proposed concept. The extracted power by the modified AWEGS is estimated using analytical approaches. To verify the effectiveness of the modified AWEGS, a small prototype is manufactured, and an experiment is carried out. The obtained results confirm the predicted results, and demonstrated the effectiveness of the modified AWEGS and the proposed concept for modification of the AWEGSs. Index Terms —AWEGS; WEGS, High Altitude tethered wind turbine system; High altitude winds
To exploit the power of high altitude winds, a novel Airborne Floating Circular Wind Energy Gener... more To exploit the power of high altitude winds, a novel Airborne Floating Circular Wind Energy Generation System (AFCWEGS) is proposed. The proposed AFCWEGS consists of four parts: 1) main body, 2) flying kites, 3) conductive tether, and 4) a ground station. The conductive tether anchors the main body to the ground station. The flying kites are tethered to the floating circular main body and rotate it. By rotation of main body a generator will generate electrical energy. The generated electrical energy will be transmitted to a ground station. The lifting and the power generation systems of the AFCWEGS are independent and don not relay on together. All parts of the AFCWEGS are described in details. Moreover, an aerostatic analysis is performed to calculate the cross sectional area of the tether as well as the required volume for the main body. Also, the output power of AFCWEGS is estimated. To validate the proposed wind energy generation system a small prototype has been constructed and...
The increasing trend of world energy consumption cause to an active movement to find new resource... more The increasing trend of world energy consumption cause to an active movement to find new resources of energies. The wind energy can be one of these options. In this paper, Small Scale Wind Energy Generation Schemes for Smart Grid Using FACTS Technology is presented. Moreover, due to novelty of such new resource of energy, two schemes is presented. Moreover, an efficient generator topology equipped with a novel control strategy can be used to achieve an efficient high altitude wind energy generation system with a high stability and reliability in electric grid systems is proposed. Flexible AC Transmission Systems (FACTS) technology is used to stabilize the proposed generator for a proper wind energy schemes for small energy generation applications.
ABSTRACT A novel hybrid-kite (HK) for harnessing powerful and persistent high altitude winds is p... more ABSTRACT A novel hybrid-kite (HK) for harnessing powerful and persistent high altitude winds is proposed. The surface of HK constructed of an array of small units. Each unit consists of four rotors and two generator can captures wind power and converting to electrical power while its drag coefficients is controllable. A conductive tether anchors the kite to the ground station for both transmission of generated electrical power by the units and driving a ground-based generator. Spit of conventional kites, due to construction of surface of HK with such units, it not required to change the kit's pith angle to control its drag coefficient, results in a liner flying path and elimination of crosswind motion. In ascending phase of the HK, units are controlled to have maximum drag to provide pulling force to drive the ground-bead generator. But in the descending phase, the units generate power with minimum drag coefficient. Estimation of electrical output power of the proposed kite is presented using parametrical approaches. A small prototype was constructed and tested, and the obtained results are compared with predicted data. Also, estimation of a HK with area of 150m2 is predicted and compared with extract power with a conventional kite with same area.
... A New Power Transformer Fault Diagnosis System and its Application for Wind Farms Nima Amjady... more ... A New Power Transformer Fault Diagnosis System and its Application for Wind Farms Nima Amjady1, Mehdi Hedayatshodeh2 ... REFERENCES [1] Archer CL, Jacobson MZ (2005) “ Evaluation of global wind power” J Geophys Res 110:D12110 10.1029/2004JD005462. ...
Generation System (WEGS) is proposed. Based on the proposed model, a novel concept for enhancemen... more Generation System (WEGS) is proposed. Based on the proposed model, a novel concept for enhancement of efficiency of WECSs is proposed. An Airborne Wind Energy Generation System (AWEGS) is modeled, modified using the proposed concept. The extracted power ...
A novel Axial flux Brushless Permanent magnet generator with two mechanical inputs for marine cur... more A novel Axial flux Brushless Permanent magnet generator with two mechanical inputs for marine current energy generation is proposed, and a detailed description of its construction is presented. The generator topology consists of two independent counter rotating rotors and a stator, without any brushes and slip rings for excitation system make it make a water proof generator for marine current energy generation. Also, this generator is direct drive with no need gear-box, due to high relative speed between the rotors. Moreover, all components of the generator were modeled and designed using an analytical approach. An optimum design for the generator was obtained using analytical iterative approach. To evaluate the efficiency of the obtained design, flux density simulations using a finite element software package were carried out. The obtained simulation results demonstrated the effectiveness of the proposed generator.
High altitude winds offer an enormous dense layer of energy over New York State, which can be con... more High altitude winds offer an enormous dense layer of energy over New York State, which can be considered as a cheap energy resource. This layer of energy not only can sufficiently supply this state, but also can supply all the U.S. energy needs. In this paper a High Altitude Wind Energy Generation Station (HAWEGS) with rated power of 10 GW over Catskill’s mountains in the New York State is modeled and designed. The HAWEGS consists of an array of Airborne Wind Energy Generation Systems (AWEGSs). To achieve a smooth electrical energy generation during the year with a high capacity factor, the HAWEGS is configured as three interconnected sections spaced at the same longitude. The optimum performance heights of the AWEGSs in all the sections were found. Moreover, a detailed electrical system including power transmission and energy storage was designed. Three-month resolution and annual performances of the HAWEGS were presented. The project cost and electricity price were estimated. Also...
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