A Novel Airborn Multi-Turbin Floating Wind Energy Generator - May 3, 2023
A NOVEL AIRBORN MULTI-TURBIN FLOATING WIND ENERGY GENERATOR
KEYWORDS: Global warming, wind energy, wind turbin, electrical generator, efficiency, electrical generator, airborne energy
The proposed wind turbine consisted of an array of floating wind turbine. Each of the wind turbines is a light weight wind turbine with a light weight permanent magnet electrical generator. This wind turbine is framed with an inflatable round structure filled with a lighter than air gas allow it be aloft as shown in Fig.1.
Fig. 1. The floating ligh weight wind turbine generator framed with a inflatable circular ballon filled with lighter than air gas.
The used electrical generator is a DC permanent magnet generator which an aluminum envelop and aluminum shaft. The generator is designed to be light weight. The generator has two series axial flux generators inside with co-axis shaft connected to the main shaft.
Fig. 2. Light weight electrical generator with aluminum made shaft and envelop.
Multiple number of the described floating turbines are connected together and framed in an rectangular aluminum frame. The whole structure will be floating at high altitude. The electrical generators terminals are connected together in parallel connected and whole multiple wind turbine will have two output terminals which is a single phase DC current.
Fig. 2. Multiple floating wind turbines framed in an rectangular aluminum frame floating at high altitude.
The tether connect the multi-wind turbine system to the ground is a conductive wire coated with cotton. Three strong fibers also are inside of the cotton. Also, a data cable included inside the cotton as all shown in Fig.4. The data cable is for sensing the condition of the electrical generators and monitoring them for possible incident fault detection.
Fig. 3. The tether has an condutive wire and three strong ligh weigh carbon fibers and data cabel coated with cotton.
The generated electrical energy by the wind turbines is transferred via a conductive tether to the ground as shown in Fig. 3. The whole structure will be floating at high altitude and it will benefit from high altitude winds with high speed, persistence speed in other words high wind energy density.
Fig. 4. The generated wind energy is transfered to ther ground via the conductive tethers.
The tether connect the floating muti-wind turbine system to the ground station. This ground station has foundation and on this foundation a drum control the tether length. For reducing the tether length the drum turns and tether is turned around the drum. For increasing the tether length to increase the floating multi-wind turbine system the drum turns in opposite direction and released the tether. The generated electricity then is transferred to a power transformer as shown in Fig.6. This is a step up power transformer increase the the voltage. The voltage increase because it should be compatible with grid voltage. The other reason for increasing the volatile is that because the electrical energy should be transferred the high voltage will have lower electrical loss at transmission line. At the consumption point, the electrical voltage again will be reduced to be compatible with consumer electrical or electronic devices.
Fig. 5. The ground station receives the electrical energy via the tether and also control the tether length The electrical voltage is increased by step up power transformer to be fed into grid.
A floating wind farm will be at high altitude by using several number of such floating multi-wind turbine systems. The generated electricity by such wind turbines is transferred to their corresponding ground stations and collected together to be fed into electrical grid.
Fig. 6. A high altitude floating wind farm consisted of several floating multi wind turbine generator.
The proposed wind turbine has a lower cost as it does not need foundation, tower, gearbox and large ground area compared to ground mounted wind turbine. It also generate more electrical energy as it benefit from high altitude winds with high wind speed. Also, in contrast to the ground mounted wind turbines and wind farms that has beauty issues for the nature this wind turbine will be at high attitude not visible by naked eyes. There are many companies worldwide that deploy similar wind farms as it generated high energy per occupied space area..
The current wind energy technology is not cable of extract considerable wind energy although the human energy consumption increases. In this paper a new floating multi-wind turbine system proposed. The proposed wind turbine consisted an array of floating wind turbines that framed with an circular lighter than air structure. The electrical energy is generated by the wind turbine and are transmitted to a ground station via a conductive enforced tether, where the electrical voltage is increases by power transformer to be fed to national grid.
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