RU2395714C1 - Electric generator stator - Google Patents

Abstract

FIELD: power industry.

SUBSTANCE: stator of electric generator operating at rotation of rotor elements on blades of wind motors includes magnetic conductors, magnetic field source, coil fasteners. Magnetic conductors are equipped with inner sections coming into magnetic contact with rotor elements of wind wheel blades and enveloped with working coil, and external sections with additional core-type magnetic conductors and not closed with rotor elements of blades. External sections of magnetic conductors together with additional core-type magnetic conductor are enveloped with additional coil.

EFFECT: increasing generator efficiency at minimising its cost.

1 dwg

Description

The invention relates to the field of wind energy.

Known wind generators [1, 2] with stators of the traditional type.

Of all the known analogues, the closest to the claimed combination of essential features is the stator of a wind generator [3] of a segment type, which is made on the basis of the magnetic system of a direct current machine or universal, and includes coils, an excitation source and magnetic circuits.

The disadvantage of this stator is that it is adapted to work only with an inductor previously cut in diameter, which complicates the manufacturing technology and increases the mass.

The invention is aimed at increasing the efficiency of the generator while minimizing its cost.

This is achieved by the fact that in the stator of the electric generator, which operates when the rotor elements rotate on the blades of the wind wheels, containing magnetic circuits, a magnetic field source, a coil and fasteners, according to the invention the magnetic circuits are provided with internal sections that are in magnetic contact with the rotor elements of the wind wheel blades covered by the working coil and external, non-locking rotor elements of the blades sections with an additional core magnetic circuit, while the external sections of the magnetic circuit together with an additional magnetic core rod covered additional coil.

The invention is illustrated in the drawing, which shows the claimed stator.

The stator of the electric generator contains an excitation source (permanent magnet) 1 and magnetic cores, each of which includes external, middle and internal sections, while the external section 2 is covered by the first working coil 3, the working gap 4 is blocked by a rotor element 5. Each of the two magnetic cores middle sections 6 and 7, adjacent to the excitation source and internal, non-closed rotor element, the right and left sections 8 and 9, which, together with an additional core magnetic circuit 10 are covered by an additional cat eye 11. Using the mounting corners 12, the stator is fixed to the base 13. The second section is indicated by 14.

The stator works as follows: during rotation, the rotor elements 5, mounted, for example, on the blades of the wind wheels, periodically enter into magnetic contact with each magnetic circuit, namely, sections 2 and 14. As a result, the magnetic flux traveling through the circuit: source 1, section 6 , section 2, gap 4, rotor element 5, gap 4, section 14 (of the right magnetic circuit), section 7, also of the right magnetic circuit, induces an EMF in coil 3. At the same time, with an increase in this flux, the scattering flux that closes along the circuit decreases: an additional magnetic circuit 10, section 8 of the left magnetic circuit, section 6 of the left magnetic circuit, source 1, section 7 of the right magnetic circuit, section 9 of the right magnetic circuit, turns of the coil 11. As a result of a change in the scattering flux EMF is also induced in coil 11, which can be summed with EMF of coil 3, which increases the stator voltage.

The technical and economic advantage of this stator is its high manufacturability, based on the use of a coil type winding, and also on the fact that the additional EMF increment is achieved due to only additional stator elements, magnetic circuits and coils, while the magnetic field source and rotor element remain the same.

Information sources

1. A.S. USSR No. 732572 / V.K.Alexandrov et al. - Wind turbine. BI No. 17, 1980 F03B 3/30.

2. A.S. USSR No. 861716 / I.P Kopylov et al. - Gearless wind turbine. BI No. 1, 1980, F03D 1/00.

3. RF patent No. 2204734 / A. M. Litvinenko. - The stator of the wind generator. publ. BI No. 14, dated 05/20/2003, building No. 2001129417/06 dated 10/31/2001, MKI F03D 9/00.

Claims (1)

The stator of an electric generator that functions when the rotor elements rotate on the blades of a wind wheel, containing magnetic circuits, a magnetic field source, a coil and fasteners, characterized in that the magnetic circuits are provided with internal sections that are in magnetic contact with the rotor elements of the wind wheel blades, covered by the working coil, and external non-locking rotor elements of the blades sections with an additional core magnetic core, while the outer sections of the magnetic core with an additional terzhnevym magnetic core covered by additional coil.