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INVENTION
Patent of the Russian Federation RU2270360
SEGMENTAL ROTOR
The name of the inventor: Litvinenko Alexander Mikhailovich
The name of the patent holder: State Educational Institution of Higher Professional Education "Voronezh State Technical University"
Address for correspondence: 394026 , Voronezh, Moscow Prospect, 14, VPOU "VSTU", Patent Department
Date of commencement of the patent: 2004.09.27
The invention relates to the field of wind energy, in particular to segment-type wind-electric generators. The technical result consists in reducing the mass and dimensions of the segment rotor while minimizing its cost by simplifying the manufacturing process. The segment rotor comprises a hub, blades, rim and magnetic circuits which are made in the form of a chain of ferromagnetic and non-ferromagnetic plates fastened by rollers, the chain is located on the rim and is provided with a tensioning device.
DESCRIPTION OF THE INVENTION
The invention relates to the field of wind energy, in particular to segment-type wind-electric generators.
Known [1, 2] segmented rotors of the traditional type, containing a hub, blades, arc-shaped elements and magnetic cores, more generally arc-shaped elements can be closed.
Of all known analogues, the segmental rotor [3], which is part of the wind power plant, includes the permanent magnet located in the middle of the C-shaped bracket with the help of a band from a non-magnetic wire.
The disadvantage of this rotor is that it can not be used when working with an inductor generator, and the complexity of fastening associated with the use of a non-magnetic bandage is increased.
The invention is aimed at reducing the mass and dimensions of the segment rotor while minimizing its cost by simplifying the manufacturing process.
Achievement of the technical result is due to the fact that the magnetic conductors of the segment rotor are made in the form of a chain of ferromagnetic and non-ferromagnetic plates fastened by rollers, the chain is located on the rim and equipped with a tensioning device.
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BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 illustrates a ferromagnetic plate of a chain, FIG. 2 shows a non-ferromagnetic plate, FIG. 3 shows a chain section, a side view, FIG. 4 shows a chain section, a plan view, FIG. 6 shows a chain on an arcuate portion of the rim, and FIG. 7 shows a general side view of a wind power generator equipped with this rotor. Magnetic conductors of a segmented rotor are part of a chain consisting of ferromagnetic plates 1 with holes 2 and non-ferromagnetic plates 3 with holes 4. Ferromagnetic (in the set) and a pair of non-ferromagnetic plates alternate and are joined by rollers 5, fixed, for example, by rivets in the axial direction. There is also a tensioning device consisting of a screw 6 connected to the roller and having a right-hand thread, a threaded nut 7 and a screw 8 connected to a neighboring roller and having a left thread. The entire chain is located on the rim 9, to which are attached spokes (not shown). On the spokes are installed blades or the spokes themselves are made in the form of a blade. |
Operation of the device. In the presence of a wind flow, which exerts pressure on the spokes (blades), the rotor comes into rotation. Ferromagnetic magnetic cores (actually the teeth of the rotor) modulate the magnetic flux of the stator. The stator is mounted on the lower end of the traverse, which is attached to the movable (rotary) base, on which the bearing of the hub and the tail of the wind generator are strengthened. The stator, like all stators of inductor generators, is a magnetic circuit, which includes, in addition to the magnetic circuit, a magnetic field source (permanent magnet or excitation coil) and a working coil that perceives the flow changes caused by its modulation by the rotor. The induced voltage is then fed to the control unit and then to the load.
The technical and economic advantage of this rotor is that it produces a set of maximally unified parts (chain elements) that are connected in production conditions, and when mounted, they only fit into the chain on the rim, are connected by a closing link and are pulled. In addition, such a design makes it easier to rim, since the breaking forces are largely perceived by the chain. With possible contamination of the elements, they can be easily removed from the rim, cleaned and reinserted.
INFORMATION SOURCES
1. Ac. USSR № 732572. Alexandrov V.K. et al. Wind power unit. BI, No. 17, 1980, F 03 D 3/30.
2. A.c. USSR № 861716. Kopylov IP and others. A gearless wind generator. B.I. No. 11, 1981, F 03 D 1/00.
3. The patent of the Russian Federation No. 2211951. Litvinenko A.M. Wind power plant. B.I. No. 25 of 10.09.2003, application No. 20011359 46/06 of 27.12.2001, MKI F 03 D 9/00.
CLAIM
Segmental rotor comprising a hub, blades, rim and magnetic cores, characterized in that the magnetic circuits are made in the form of a chain of ferromagnetic and non-ferromagnetic plates fastened by rollers, the chain is located on the rim and is provided with a tensioning device.
print version
Date of publication 02.02.2007gg
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