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INVENTION
Russian Federation Patent RU2211948
KONTRROTORNY vetroelektrogenerator
Name of the inventor: Litvinenko AM
The name of the patentee: Voronezh State Technical University
Address for correspondence: 394026, Voronezh, Moscow Avenue, 14, Vilnius Gediminas Technical University, US Pat. Dep.
Starting date of the patent: 2001.10.31
The invention relates to wind energy and can be used to generate electricity. The technical result consists in reducing the weight and the wind turbine sizes, provided by the fact that kontrrotornom vetroelektrogenerator comprising a tower with a base and propeller according to the invention the generator rotor segments are designed as magnets, which are mounted on the rod ends and the latter are fixed to ends of the blades windwheels two that are located on the same basis, pivoting, and between them is the third wind wheel with kontrrotorom which magnetically coupled with the rotor segments, with the shafts windwheels mounted pulleys covered by flexible links.
DESCRIPTION OF THE INVENTION
The invention relates to wind energy and can be used to generate electricity.
Known kontrrotorny vetroelektrogenerator comprising rotating wind wheel, a magnetic system with windings, in the gap which the rotor moves, the magnetic system is located on the ground, placed in the zone of the lower position of the blades, and the blades are provided with ferromagnetic toothed plates which constitute a rotor, the rotor thus covers the ends of the blades, plates pass through an air gap of the magnetic system (see., eg, the SU 861 716 A, cl. the F 03 D 9/00, 07.09.1981), adopted the essential features of the closest analogue (prototype).
The disadvantage of this generator is the increased weight of the rotor, which in fact has a diameter equal to the diameter of the propeller, in the case of large diameter windwheels practically unacceptable and requires the use of segmented machines.
The technical result consists in reducing the weight and size is ensured by the fact that in kontrrotornom vetroelektrogenerator comprising a tower with a base and propeller according to the invention the generator rotor segments are designed as magnets, which are mounted on the ends of the rods, and the latter are fixed at the ends of the blades of the two windwheels, which are located on the same basis, pivoting, and between them is the third wind wheel with kontrrotorom which magnetically coupled with the rotor segments, with the shafts windwheels mounted pulleys covered by flexible links.
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1 shows kontrrotorny vetroelektrogenerator, front view; FIG. 2 - the same, top view; 3 shows a magnet, front view; 4 -the same, top view; FIG. 5 - a view of the front kontrrotora magnetic system; 6 - section through the coil; 7 - kontrrotor top view.
Vetroelektrogenerator mounted on the tower 1 having a turntable 2, a reinforced base 3, on which a reinforced middle kontrrotor (stator) with its wind wheel, and installed on the ends of the rotor propeller 4 with pulleys 5. At the ends of the blades 4 mounted windwheels rod 6 streamlined (teardrop shape), at the ends of rods 6 fixed magnet 7. The base 3 is provided with a tail 8. The base 3 fixed center of the rotating wind wheel 9, resulting in the movement kontrrotor (rotating stator). Four propeller (last) and 9 (center) are provided with the pulleys 5, which cover the flexible elements 10 (chains or toothed belts). Recent propeller 4 fixed in rotating units 11, and the central 9 - in a rotating assembly 12 which, in addition, is equipped with a rotating current collection 13 type "collector ring - brush", which is known and is widely used to power the rotors of induction motors with wound rotor. On the central shaft of the propeller 9 are mounted pulleys 14, through which the flexible member 10 are connected with outer pulleys 5 windwheels 4, wherein kontrrotor 15 has two pairs of poles.
Magnets 7 (rotor) mounted on the ends of the blades 4. In windwheels extreme end of the blade 4 is done opening (not shown) into which the rod 16 with two diametral orifices.
7, the elements themselves are permanent magnet 17 magnetized along the axis of the blade 4. magnet 17 abut the inner nozzle 18 and outer nozzle 19. Both the nozzle 18 and 19 and the magnet 17 are tightened horseshoe nonmagnetic coupler 20, the ends of which pass through a diametrical hole 16 in the rod at the ends of the screed 20 is threaded and screwed nut 21. to reduce aerodynamic drag nut 21 is partially recessed into sockets 22 formed in the blade 4. a similar design can be accomplished with electromagnetic excitation.
Kontrrotor 15 has pole pieces 23 with arcuate recesses for the magnetic contact with magnet 7 passes through the lugs 23 to 24 kontrrotora shaft 15, between the lugs 23 is a core 25 with a coil 26. At the same shaft with the described magnetic system there are two sprockets 14, collared flexible coupling and bearing on the end - 13 current collector.
Wind power works as follows
Under the influence of air flow propeller 4 and 9 come into rotation. Targeting is carried out while the wind tail 8. All three wheels are in kinematic connection carried pulleys (sprockets) 14 and 5 and the flexible elements 10, the length of the rods 6 are chosen so that the magnets 7 are included in the cyclic magnetic coupling with kontrrotorom 15 for example, when rotating clockwise windwheels such magnetic contact occurs when turning at 45 o from the position shown in Figure 1. This forms a magnetic circuit: the magnet 17 - the inner tip 18 - the first tip kontrrotora 23 - core 25 with a coil 26 - second tip kontrrotora - outer tip 19.
Naturally, between the tips 23 and 18 and 19 there is an air gap. After passage of the vane angular division corresponding to the arc of the magnet gap of the magnetic circuit occurs, resulting in the coil 26 is induced EMF excited current passing through the coil 26 and the rotating device 13 to the collector load. In this case the magnetic circuit can be facilitated at least twice by using two extreme windwheels 4. With the increase of the number of possible further simplification of the magnets.
CLAIM
Kontrrotorny vetroelektrogenerator comprising a tower base and a propeller, characterized in that the generator rotor segments are designed as magnets, which are mounted on the rod ends and the latter are fixed at the ends of the blades of two windwheels which are arranged on one base, pivoting and located between them third wind wheel with kontrrotorom which magnetically coupled with the rotor segments, with the shafts windwheels mounted pulleys covered by flexible links.
print version
Publication date 02.02.2007gg
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