RU2264026C2 - Magnetoelectric current generator - Google Patents

Abstract

FIELD: electrical energy generation.

SUBSTANCE: proposed magnetoelectric current generator has frame accommodating toroidal stator. The latter is made of flat permanent magnets with their north poles downward and winding coils in-between for taking off electromotive force. Rotor disposed within stator is made in the form of electromagnet, its power buses are installed on inner surface of stator. Stator buses are made in the form of hemispherical annular troughs equally spaced apart; their mating hemispherical seats are made on end sections of rotor core and accommodate spring-loaded balls affording contact with troughs and reduction of frictional force between stator and rotor. Stator annular troughs, balls, and their seats are made of conducting metal-ceramic materials.

EFFECT: enhanced efficiency and improved performance characteristics.

1 cl, 6 dwg

Description

The invention relates to the field of electricity generation both on an industrial scale, and for agricultural and domestic needs, and may also find application in the military-industrial complex system.

Known magnetoelectric current generator (see application of France No. 2407599, M. Cl. N 02 K 35/02, 1979), containing a toroidal stator with a rotor placed inside it and a winding.

A disadvantage of the known current generator is the design complexity and low coefficient of performance (COP).

Also known is a magnetoelectric current generator (see AS USSR No. 1830599, M. Cl. N 02 K 35/02, publ. In B.I. No. 28, 1993), comprising a housing with a toroidal stator placed therein made of flat permanent magnets, with the north poles pointing inward, with coils of windings placed between them for removing electromotive force, a rotor located in the stator made in the form of an electromagnet, and busbars for powering the rotor mounted on the inner surface of the stator.

In this current generator, the disadvantages of the above analogue have been partially eliminated. It is in its technical essence closer to the proposed one and can be adopted as a prototype.

Its main disadvantages are low efficiency due to the large friction of the rotor against the stator and fragility. The latter is due to the fact that due to imperfections in the design of the tire, made in the form of brushes, quickly fail during operation. In addition, it does not provide for a stator cooling system, which does not exclude its overheating. This circumstance also leads to a decrease in the efficiency of the current generator.

The objective of the present invention is to remedy the above disadvantages of the prototype.

The problem is solved by a magnetoelectric current generator, including a housing with a toroidal stator placed inside it, made of flat permanent magnets, north poles directed inward, with winding coils placed between them to remove electromotive force, a rotor arranged in the stator made in the form of an electromagnet, and a bus to power the rotor mounted on the inner surface of the stator.

What is new is that the stator tires are made in the form of hemispherical annular grooves spaced at equal distances from each other, and hemispherical nests corresponding to them with spring-loaded balls placed in them are made at the end sections of the rotor core to ensure contact with the grooves and reduce the friction force of the rotor about the stator, while the annular grooves of the stator, balls and sockets for them are made of cermet conductive material.

The presented drawings explain the essence of the invention, in which Fig. 1 shows a magnetoelectric current generator proposed for protection by a security document in a general view, in partial section, where a stator with winding coils and permanent magnets are visible, as well as a rotor with a core winding.

Figure 2 - section DD DD of figure 1, where the stator is visible with attached grooves, as well as spring-loaded balls placed between the grooves and sockets in the cores of the rotor, rotated 90 °.

Figure 3 is a section along aa of figure 1.

In Fig.4 is a section along BB of Fig.1.

Figure 5 is a section along bb In figure 1.

In Fig.6 is a section along G-G of Fig.1.

The magnetoelectric current generator comprises a housing 1 (see FIG. 1) with a toroidal stator placed inside it, made of many flat permanent magnets 2, with north poles pointing inward, with coils of windings 3 placed between them to remove electromotive force (EMF). Inside the stator is placed a rotor made in the form of an electromagnet containing a winding 4 with a core 5 made of electrical steel. To supply electric current to the winding 4 of the rotor, the stator is equipped with tires (see figure 2), made in the form of hemispherical annular grooves 6, spaced from each other at equal distances. At the end sections of the rotor core 5, hemispherical slots 7 are provided, which are connected to the grooves, with balls 9 placed in them by spring springs 8 to ensure contact with the grooves and reduce the friction force of the rotor against the stator. In addition, the balls simultaneously serve as guides for the rotor during translational motion. The said balls are also an intermediate element for transmitting direct electric current to the rotor windings. Stator annular grooves, balls and sockets for them are made of conductive ceramic material.

The generator housing is made of two hemispherical halves made of durable electrical insulation materials, for example, fiberglass, polypropylene or fluoroplastic with circular grooves with holes drilled in them for cooling the stator. If necessary, transformer oil can be used to cool the stator, forcing it to circulate in the housing. Before assembling the current generator, the outer surfaces of the gutters and nests for balls are coated with an insulating material, and their inner surfaces are coated with lubricant (they are not shown in Fig.).

Magnetoelectric current generator operates as follows.

By supplying direct electric current to the buses, the rotor winding 4 is fed from outside by means of balls and their sockets 7, as a result of which the core of the electromagnet 5 acquires strictly defined poles - north and south, due to the interaction of magnetic forces of the north pole of the electromagnet, which is the rotor, with The magnetic forces of the same pole of the flat permanent magnets 2 of the stator generate a repulsive force and, as a result, the rotor is driven in the forward direction, rolling balls 9 along the channels 6. In the endless translational motion inside the stator, the rotor, crossing its magnetic field lines of individual windings 3 (there are many), induces an emf in them. Since the rotor winding 4, which consumes electricity from the outside, is only one, and the stator windings 3 for induction of the EMF are many, then the energy taken from them will be much larger than the energy consumed by the rotor winding 4.

The technical and economic advantage of the proposal is as follows.

Due to the design features, it is more reliable in operation and durable in comparison with other current generators of a similar action, and is technologically advanced to manufacture. It can be made of various sizes depending on the consumer, for industrial and agro-industrial purposes, as well as for individual use, by connecting the input of the current generator to the power outlet after the meter, and all consumers of apartment buildings to the generator output.

Claims (1)

A magnetoelectric current generator, comprising a housing with a toroidal stator placed inside it, made of flat permanent magnets, north poles directed inward, with coils of windings for removing electromotive force placed between them, a rotor placed in the stator made in the form of an electromagnet, and busbars for powering the rotor mounted on the inner surface of the stator, characterized in that the stator tires are made in the form of hemispherical annular grooves spaced at equal distances from each other and at the end sections of the rotor core there are made hemispherical nests corresponding to them with spring-loaded balls placed in them to ensure contact with the grooves and reduce the friction force of the rotor against the stator, while the annular grooves of the stator, balls and nests for them are made of cermet conductive material.

Images