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INVENTION
Patent of the Russian Federation RU2261366
UNPRESSED WIND-HEAVY
The name of the inventor: Litvinenko A.М.
The name of the patent holder: Voronezh State Technical University
Address for correspondence: 394026 , Voronezh, Moscow Prospect, 14, VSTU, Patent Department
The date of the beginning of the patent: 2004.02.25
The invention relates to the field of wind power and can be used for power generation. The technical result consists in reducing the starting torque while maintaining the power of the wind turbine. The gearless wind turbine contains a tower with a turning base, a segmented stator element, a tail, a wind wheel with blades and segment rotor elements are mounted on the base. The rotor and stator segment elements are made in the form of two sections, with a non-magnetic segment element between the segmented elements of the rotor.
DESCRIPTION OF THE INVENTION
The invention relates to the field of wind power and can be used for power generation. A wind turbine is known [1], which contains a rotary wind wheel, a magnetic system with windings, in the gap of which the rotor moves, the magnetic system being located on the base located in the zone of the lower position of the blades, and the blades are equipped with ferromagnetic gear plates constituting the rotor, the rotor, thus , Covers the ends of the blades, the plates pass through the air gap of the magnetic system.
From known analogues of the closest to the claimed essential features is the wind turbine [2] containing a tower with a rotary base, a segmented stator, a tail, rotating wind wheels with shafts, with blades and with segment elements are installed on the base, the segment elements are equipped with two rotational In pairs, the first rotational pair of each element being mounted on the end of the blade and the second pair on the additional rod and the latter being located in the longitudinal channel of the blade and fixed to the shaft and a closing spring is provided between the segment element and the blade.
The disadvantage of this device is the increased starting torque, which is due to the radial forces of attraction of the rotor element to the stator element.
The invention is aimed at reducing the starting torque while maintaining power.
This is achieved by the fact that the rotor and stator segment elements are made in the form of two sections, and a non-magnetic segment element is arranged between the segmented elements of the rotor.
Achievement of the technical result is due to the fact that the stator and rotary segment elements enter the magnetic contact not simultaneously, but alternately.
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BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 illustrates a wind turbine, side view, FIG. 2 shows rotor and stator segment elements at the beginning of a magnetic contact, FIG. 3 shows continuation of a magnetic contact, FIG. 4 shows the termination of a magnetic contact .
The gearless wind turbine includes a tower 1 with a supporting bearing 2, a stator segment element 3 mounted on a turning base, a rotary segment element 4, a blade 5, a rod 6, a wind wheel bearing 7, a rotary head 8, a tail 9, a bearing of the rotary head 10. Each The stator segment element includes, in the simplest case, the excitation winding 11, the U-shaped magnetic system 12, the power winding 13. Each of the rotor elements is a ferromagnetic plate 14 that is attached to a non-magnetic segment element 15 which is, for example, A part made of plastic masses.
The wind turbine works as follows. Under the influence of the wind flow, the blades 5 of the wind wheel come into rotation. In this case, the ferromagnetic plates 14 of the rotor segment elements 4 intersect the air gap between the poles of the magnetic circuits 12 of the stator elements 3, whereby the change in the magnetic flux that is excited by the excitation winding 11 is perceived by the power winding 13 and transmitted to the network or to charge the battery, Working process of an inductor generator.
The reduction of the starting torque is achieved by the fact that at the beginning of the working process the left plate 14 and the left magnetic circuit 12 enter the magnetic interaction, see Fig. Further, when the rotary segment element is moved clockwise, see FIG. 3, a state occurs in which both the right and left magnetic circuits are opened, hence the moment is minimal. The elements then come to the position shown in FIG. 4 when the left member is turned off, i.e., the magnetic circuit of the magnetic circuit 12 is open and it does not create a torque, and the torque is created by the right magnetic core and plate 14, which forms a closed magnetic circuit.
Thus, the starting torque is halved compared to the case where the rotor element would be two adjacent plates 14 and the angular dimensions of the stator segment element would be equal to the angular dimensions of the two shown in FIG. 2, FIG. 3, FIG. .4 stator elements. At the same time, the power of the wind turbine remains within the given limits, since the power of segment machines, with an equal frequency of rotation, is proportional to the product of the angular dimensions of the active parts of the stator and rotor segment elements.
The advantage of this gearless wind turbine is a reduced starting torque, which improves the performance characteristics, since the wind turbine operation starts with lower wind speeds.
INFORMATION SOURCES
1. The author's certificate of the USSR № 861716 / IPKopylov, TVLyadova. - Direct-drive wind turbine / Opobl. Bul. No. 11, 1981, IPC 7 F 03 D 1/00.
2. The patent of the Russian Federation №2208700 / А.М.Литвиненко, В.А.Баркалов. - Direct-drive wind turbine / Opobl. Bul. No. 20, 2003, application No. 2001129401/06 of Oct. 31, 01, the IPC 7 F 03 D 9/00.
CLAIM
A gearless wind turbine comprising a tower with a rotatable base, a segmented stator element, a tail, a wind wheel with blades and segment rotor elements is mounted on the base, characterized in that the rotor and stator segment elements are made in the form of two sections, and between the segmented rotor elements there is a non-magnetic segment element .
print version
Date of publication 02.02.2007gg
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