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INVENTION
Patent of the Russian Federation RU2254667
VETROELECTRIC INSTALLATION
The name of the inventor: Ilin M.I.
(RU); Beloglazov I.N. (RU); Kutsenko B.N. (RU)
The name of the patent holder: State Educational Institution of Higher Professional Education St. Petersburg State Mining Institute. G.V. Plekhanova (Technical University) (RU)
Address for correspondence: 199106, St. Petersburg, VO, 21st Line, 2, SPGGI (TU), Patent Department
Date of commencement of the patent: 2004.03.25
The invention relates to the field of electrical engineering and power engineering, concerns the features of the implementation of wind power plants and can be used in the creation of wind power plants operating both in an autonomous mode and on a common electrical network. The essence of the invention is that a wind power plant containing a support, an axis on which a rotor type windmill is mounted, an electric current generator, an electric power drainage device according to the invention is equipped with an additional wind turbine located on the axis of the first windmill, the additional wind turbine being connected to An external rotor of an electric current generator whose internal rotor is connected to a first windmill, the inner and outer rotors of the generator being attached to the first and additional wind turbines respectively by means of rings fixed to them. The technical result achieved by the present invention consists in increasing the relative peripheral rotational speed of the rotor of the above-mentioned electric current generator, which leads to an increase in the efficiency of the wind power plant.
DESCRIPTION OF THE INVENTION
The invention relates to wind energy and can be used in the creation of wind power plants operating both in an autonomous mode and on a common electrical network, mainly in the conditions of the Far North.
There are known wind power plants containing a wind turbine, an electric current generator and a mechanical overdrive, gear wheels, a reducer, or a complex roller upshift (as in No. 1300625 (USSR), H 02 P 9/00, BI No. 12, 1987 , AS No. 1382989 (USSR), F 03 D 11/00, BI No. 11, 1988, а., No. 1384819 (USSR), F 03 D 9/02, BI No. 12 , 1988).
The main disadvantage of these analogs is the use of mechanical transmissions that increase the speed of rotation of the windmill to the rotational speed and the necessary peripheral speed of the rotor of a typical power generator. Low efficiency of such transmissions leads to the fact that in the system of converting mechanical energy into electrical, significant losses occur.
A wind power plant is known (patent RF No. 2210854, IPC No. 02/9/09, 9/42, publication 2003) adopted as a prototype and containing the following elements: wind turbine, differential gear, alternator, DC electric machine , An amplifying device, a regulator, a speed former, an adder, a sensor of active load power, an active power generator, a wind speed motor speed sensor, and a switch. The disadvantage of the prototype is low efficiency due to the use of mechanical transmissions to increase the rotational speed and the necessary peripheral speed of the rotor of a typical generator.
The aim of the invention is to create a wind power plant that provides an increase in efficiency and quality of electricity produced, a reduction in the overall power of electrical equipment. The problem is solved by the fact that the wind power plant containing the support, the axis on which the rotor-type wind turbine is installed, the electric current generator, the electric power drainage device according to the invention is equipped with an additional wind turbine located on the axis of the first windmill, the additional wind turbine being connected to the outer rotor of the generator Electric current, the internal rotor of which is connected to the first wind turbine, while the internal and external rotors of the generator are attached to the first and additional wind turbines respectively with the help of rigidly fixed rings on them.
Due to such implementation, the relative circumferential speed of rotation of the generator rotors and the efficiency of the wind power plant are significantly increased.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a wind power plant, and FIG. 2 shows an enlarged view of a section A. FIG.
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The wind power plant comprises a first 1 and an additional 2 wind turbines arranged with the opposite direction of rotation on the axis 3 fixed in the support 4. The outer rotor 5 of the electric generator, which acts as a stator, is provided with conductors for the electric power outlet (not shown) and rigidly fixed to By using a ring 6 and clamps 7 at the lower end of the additional wind turbine 2. The internal rotor 8 of the generator contains permanent magnets (not shown in the drawing) and rigidly fixed with a ring 9 and clamps 10 on the upper end of the first windmill 1. The outer rotor has a groove 11, But on the internal groove 12, which the fixing ends of the latches 7 and 10 enter when securing the generator rotors. The outer and inner rotors are installed with a gap with respect to each other at the same level. Due to the electromagnetic interaction between the outer and inner rotors, a magnetic field is created in the gap between them, which creates an electromotive force in the conductors located on the outer rotor, and with the help of current-carrying devices, energy is removed from the conductors and sent to the consumer.
The device works as follows. When the wind turbines 1 and 2 rotate on the axis 3 in opposite directions, the outer rotor 5 and the inner rotor 8 of the generator connected to them rotate at a circumferential speed sufficient to generate electricity. The electromotive force produced in the conductors of the outer rotor increases in magnitude due to the fact that there is an increase in the speed of rotation of the rotors relative to each other. Direct gearless transfer of rotational motion from the shaft of the wind turbine 3 to the shaft of a typical electric generator, as in the prototype, does not provide sufficient peripheral speed of the generator's rotor also because the ratio of the rotor diameter of a typical electric generator and the diameter of the wind wheel is in the range 0.02-0.05. Meanwhile, it is known that in hydropower machines, the ratio of the rotor diameter of a typical electric generator and the diameter of a hydroturbine rotor is close to unity, which guarantees obtaining the necessary circumferential velocities of the rotor of an electric generator. In order to obtain an increase in the peripheral speed of the generator's rotor, it is necessary to select the ratio of the diameter of the rotor of the generator and the diameter of the wind wheel in the range 0.25: 1.
Thus, the technical result is to improve the quality of electricity produced and reduce the overall power of electrical equipment.
CLAIM
A wind power plant comprising a support, an axis on which a rotor-type wind turbine is installed, an electric current generator, an electric power outfitting device, characterized in that it is provided with an additional wind turbine located on the axis of the first windmill, the additional wind turbine being connected to the outer rotor of the electric current generator The rotor of which is connected to the first wind turbine, while the inner and outer rotors of the generator are attached to the first and additional wind turbines respectively with the help of rings fixed to them.
print version
Date of publication 11.01.2007gg
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