Wind electric generator

FIELD: electricity.

SUBSTANCE: wind electric generator contains a windwheel and a magnetoelectric generator installed at the shaft, a rotor of the generator, which is made as two discs with permanent magnets place at it at equal spaced, a static stator with equally-spaced inductance coils, which is placed between the rotor discs, centrifugal governors of a magnet gap and spade springs are installed at the shaft, the shaft has longitudinal spline grooves with inserted protrusions which are made in the rotor discs; the rotor discs are installed at the shaft so that they are movable in axial direction in regard to the static stator; spade springs are installed so that the magnet gap can be increased between the rotor permanent magnets and the stator inductance coils, each centrifugal governor of the magnet gap is made as a double-arm lever and installed so that it can diminish the magnet gap between the rotor permanent magnets and the stator inductance coils while a weight is installed at the other arm.

EFFECT: maintenance of electric power generation at low and high wind speeds and at increased electrical loads.

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The invention relates to the field of electrical engineering, namely, the magneto-electric generators that use to the rotor rotation energy of the air flow, and can be used as a standalone power source of small capacity on the sites without power supply in the field, primarily in the prevalence of changeable by the force of the winds.

Known gearless wind turbine that has a wheel with a horizontal axis of rotation and magneto generator with permanent magnets. The segments of the rotor with permanent magnets mounted directly on the propeller blades and rotate together with it, and the stationary stator segments with the corresponding air gap installed opposite to the segments of the rotor and is made in the form of a circular stator (USSR Author's certificate No. 868105, F03D 9/00, 30.09.1981).

A disadvantage of the known wind turbine is its low efficiency due to the large aerodynamic losses caused by the segments of the stator and rotor. In addition, uneven air gap between the segments of the rotor and stator creates a large moment of moving propeller, causing the beginning of the rotation of the latter is possible only at relatively high wind speed.

The closest technical solution to the claimed invention is troductory the turbine according to the author's certificate of the USSR No. 1737151, F03D 9/00, 30.05.1992. This wind farm contains installed on the shaft of the wind wheel and magneto-electric generator, the rotor of which is made in the form of two disks with evenly placed on them by the permanent magnets and the stationary stator with uniformly located on the inductor is located between the rotor disks.

Known wind turbines has the following disadvantages:

1) for small values of wind speed and a large electrical load electricity generation may be terminated due to the termination of the rotation shaft of the generator, since the magnetic gap between the permanent magnets of the rotor and the coils of the stator permanent, for small numbers of revolutions, and large numbers of revolutions of the shaft;

2) the inability to produce electricity at very high wind speeds as triggered mechanical protection from exceeding the number of revolutions of the shaft of the generator.

These drawbacks are eliminated in the present invention, which is aimed at solving the problem of saving electricity at low and high wind speeds, and at high electrical loads.

The problem is solved by maintaining and preserving the minimum number of revolutions of the shaft of the generator, which is the minimum required for excitation of the gene and the radio power. Structurally, the problem is solved by maintaining the desired magnetic gap between the permanent magnets of the rotor and the coils of the stator due to the axial movement of the disks of the rotor with permanent magnets depending on the number of revolutions of the shaft of the generator.

The technical result is achieved by the fact that wind power, containing mounted on the shaft of the wind wheel and magneto-electric generator, the rotor of which is made in the form of two disks with evenly placed on them by the permanent magnets and the stationary stator with uniformly located on the inductor is located between the rotor disks, according to the invention additionally introduced centrifugal regulators magnetic gap and blade spring mounted on the shaft, while the shaft has a longitudinal spline grooves, in which are mounted the projections made in the rotor disk, the rotor disk mounted on the shaft can move in the axial direction relative to the fixed stator, radar springs installed with the possibility of increasing the magnetic gap between the permanent magnets of the rotor and the coils of the stator, each centrifugal Governor of the magnetic gap is made in the form of two shoulders of the lever and is mounted with the possibility of reducing the magnetic gap between the post of the permanent magnets of the rotor and the coils of the stator with increasing shaft speed, moreover, one shoulder, two shoulders of the lever rests against the base of the rotor disc, and on the other shoulder has a cargo.

The invention is illustrated by the drawing, which shows a General view of part of the construction of the proposed wind power in longitudinal section (symmetric elements of the lower part of the wind power conventionally not shown).

The figures in the drawing, the following elements and nodes:

1 - hub,

2 - stationary stator,

3 - coil inductance,

4 - disc rotor

5 is a permanent magnet,

6 - axis screw

7 - shaft,

8 - bearing,

9 is a centrifugal Governor of the magnetic gap,

10 - blade spring,

11 - wind wheel,

12 is a longitudinal spline groove.

Wind power contains mounted on the shaft 7 of the wind wheel 11 and magnetoelectric generator.

The rotor of the magneto generator is made in the form of two discs with 4 evenly placed on them by the permanent magnets 5.

The fixed stator 2 of the magnetoelectric generator is located between the discs 4 of the rotor and has evenly spaced on it inductor 3.

The difference of the proposed wind power is that it additionally introduced centrifugal regulators 9 magnetic gap and blade spring 10 mounted on the shaft 7.

The shaft 7 it is no longitudinal spline grooves 12, in which you installed the projections made in the discs 4 of the rotor.

The disks 4 rotor mounted on the shaft 7 can move in the axial direction relative to the fixed stator 2.

Leaf-type spring 10 is installed with the possibility of increasing the magnetic gap between the permanent magnet 5 of the rotor and the coils 3 of the stator.

Each rotary knob 9 of the magnetic gap is made in the form of two shoulders of the lever and is mounted with the possibility of reducing the magnetic gap between the permanent magnet 5 of the rotor and the coils 3 of the stator with increasing frequency of rotation of the shaft 7, one shoulder, two shoulders of the lever rests against the base of the rotor disk 4, and on the other shoulder has the goods (in the drawing conventionally not shown).

The purpose and interaction of elements and nodes in the following.

The shaft 7 serves for fastening on him drive propeller blades 11, perceiving wind, and the hub 1. The hub 1 is used to contain the main elements of the generator, the movable mounting of the entire Assembly of the generator to the mast and attaching the tail to the orientation of the propeller blades 11 into the wind (in the drawing, the mast, the rolling elements fastening the hub to the mast and tail feathers conventionally not shown).

Dielectric nonmagnetic state the 2 is for placing inside the circumference of the coils 3. The stator 2 is stationary on the hub 1 by means of screws (the drawing shows the axis 6 screws).

The inductor 3 to the fixed stator 2 are used for the removal of power when switching through a magnetic field from the permanent magnets 5.

Bearing steel wheels 4 of the rotor are used to fasten them to the permanent magnets 5 and rotate together with the shaft 7. Each of the discs 4 of the rotor has a blade spring 10, fixedly mounted on the shaft 7.

The permanent magnet 5 attached to the rotor disk 4, are used for switching of the magnetic flux through the coil 3 of the stator. Permanent magnets 5 on the opposite disks 4 of the rotor have different polarity, which also alternates for permanent magnets 5, which are located on the same disk 4.

Along the centerline of the shaft 7 drives 4 of the rotor with the permanent magnets 5 can be moved along the longitudinal spline grooves 12 under the force of centrifugal regulators 9 magnetic gap or blade spring 10, which provide the required power generation amount of the magnetic gap between the permanent magnet 5 of the rotor and the coils 3 of the stator. The magnetic gap is adjustable depending on the prevailing wind speed.

The shaft 7 also serves to mount a centrifugal Governor 9 magnetic gap, lepist the new springs 10, drives 4 of the rotor. The shaft 7 can rotate in the bearings 8 and is fixed against axial movement on the hub 1 by means of special clamps (on the drawing tabs conventionally not shown).

Longitudinal spline grooves 12 are evenly spaced around the circumference of the shaft 7. In the grooves 12 includes protrusions 4 disks of the rotor, providing a disc rotation 4 of the rotor with the shaft 7.

Centrifugal regulators 9 magnetic gap are evenly spaced around the circumference of the shaft 7. Centrifugal regulators 9 magnetic gap serve to reduce the magnetic gap between the permanent magnet 5 of the rotor and the coils 3 of the stator with increasing frequency of rotation of the shaft 7 and ensure Startovaya generator at low wind speed.

Structurally, each of the centrifugal regulator 9 of the magnetic gap is two shoulders lever mounted on an axis that is in the bracket mounted on the shaft 7. One shoulder, two shoulders of the lever rests against the base of the rotor disk 4, on the other shoulder is the load (in the drawing axis, the bracket, the lever elements and cargo conventionally not marked).

The proposed wind power works as follows.

In the state of complete absence of wind blade spring 10 provide maximum clearance between the permanent magnet 5 of the rotor and coils inductively the ti 3 of the stator. This resistance to rotation of the shaft 7 due to the lack of switching magnetic field is minimal, which creates more favorable conditions for Startovaya generator compared to a generator with permanent-magnetic gap between the magnet 5 of the rotor and the coils 3 of the stator.

Under the action of wind is driven wheel 11 and with it the permanent magnet 5 of the rotor of the generator. When the rotation of the permanent magnets 5 in the stationary inductance coils 3 of the stator 2 is induced EMF.

After Startovaya with electricity generation at low wind speeds the resistance to rotation of the shaft 7 is partially overcome at the expense of the forces of inertia of rotation of the discs 4 of the rotor.

At very high wind speeds due to centrifugal force loads in centrifugal regulators 9 magnetic gap are moved to the periphery and the other shoulder every two shoulders of the lever, overcoming the resistance of the leaf-type spring 10, the pressure on the base of the disk 4 and moves it together with the permanent magnet 5 of the rotor to the coils 3 of the stator 2. The magnetic gap between the permanent magnets 5 and the inductor 3 is reduced, the resistance to rotation of the shaft 7 increases and the shaft 7 begins to rotate. Thus, the amount of generated electric energy in the inductors 3 increases. When snizeni the number of revolutions of the shaft 7 weight moves to the axis of rotation of the shaft 7 and the blade spring 10 presses the discs 4 of the rotor from the coils 3 of the stator, increasing the magnetic gap.

Thus, the use of the present invention will enable you to save power generation at small and large wind speeds, and at high electrical loads.

Wind power, containing mounted on the shaft of the wind wheel and magneto-electric generator, the rotor of which is made in the form of two disks with evenly placed on them by the permanent magnets and the stationary stator with evenly spaced on it coils located between the disks of the rotor, characterized in that theit additionally introduced centrifugal regulators magnetic gap and blade spring mounted on the shaft, while the shaft has a longitudinal spline grooves, in which are mounted the projections made in the rotor disk, the rotor disk mounted on the shaft can move in the axial direction relative to the fixed stator, radar springs installed with the possibility of increasing the magnetic gap between the permanent magnets of the rotor and the coils of the stator, each centrifugal Governor of the magnetic gap is made in the form of two shoulders of the lever and is mounted with the possibility of reducing the magnetic gap between the permanent magnets of the rotor and the coils of the stator with increasing castorena shaft, moreover, one shoulder, two shoulders of the lever rests against the base of the rotor disc, and on the other shoulder has the goods.



 

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