SU1123081A1 - Adjustable contactless synchronous generator - Google Patents

Abstract

1. NONCONTACT REGULATION; A WE SYNCHRONOUS GENERATOR containing an external magnetic core with a core winding placed in a nonmag. casing, a rotor with an excitation system of permanent magnets with a system of pole lugs and a device for controlling the voltage in the form of an annular toothed magnetic core with an adjustment winding installed coaxially with the generator rotor, and in order to improve its energy characteristics, simplify the design and improve the weight and size parameters; the ring-shaped gear magitop1 ovo is rigidly fixed in the housing and installed within the axial length of the pole pieces; bmotka control performed toroidal. 1C WITH about 00

Description

2. Generator according to pl, in accordance with the fact that the ring magnetic circuit is made with grooves on the inner side and is installed on the end side of the stator magnet electrocable outside the pole pieces.

3. The generator according to claim 1, I differ by the fact that it is equipped with a second annular gear magnetic circuit and both of these magnetic cores are made with grooves on the outer side and installed on the end sides of the rotor inside the pole pieces.

The invention relates to electrical engineering, in particular, to autonomous power sources of low power and automatic control systems of objects and technological processes.

A synchronous generator with an oscillating rotor, an annular axially magnetized permanent magnet, located between the rotor tips, and an external magnetic shunt with an annular adjustment circuit are known. The actuator is used as a section of the shunt magnetic circuit.

The generator housing is made of steel because it is part of the shunt's magnetowire, which completes the design. Equally, the rotor claws are magnetically differently loaded, which reduces the use of the machine. The magnetic flux in the bore of the stator has a large constant state due to the use of the stator as a part of the shunt. This impairs the energy performance and reduces the weight of the machine.

Also known is a contactless synchronous machine, on the rotor of which there is a permanent star magnet, and in the case there is an external closed magnetic circuit with an annular control winding. PB both sides of the magnet are located claw-shaped pole systems, opposite poles of which are dimensioned (1 pairwise between the poles of the magnet, forming an alternating polarity system with the latter. The magnet is separated from the claw-shaped pole systems and from aa with a non-magnetic sleeve D2 .... ;

use of a closed magnetic circuit and a claw-shaped pole. The system also reduces the mustache: the false design of the machine. Placing the poles of the claw-shaped systems between the poles 4a; Gyta causes an increased scattering of the magnet flux and slinging using its energies / The magnetic flux in the stator point is asymmetrical,

poles eute more distorts the magnetic field in the stator point and degrades the magnetic and energy performance. The shaft must be non-magnetic, which imposes an additional restriction on the choice of shaft material.

The closest to the invention according to the technical essence and the achieved effect is a contactless adjustable synchronous generator, imeyu {(rotor, laminated stator ring core with core pulley and additional laminated ring magnetic circuit with regulation winding t 3}.

The known generator is characterized by the complexity of the design, since the magnetic circuit with the voltage regulation winding is made with the possibility of rotating its BOKpiyr axis, which requires a special drive mechanism.

The reliability of the generator is low due to the electrical connection between the control winding and the core winding through flexible conductors or a sliding contact.

In addition, an annular magnetic circuit with a control winding ram.chchen within the zone of the stator magnetic circuit, which is 1 st elongated for directing EDT additional magnetic flux in its winding, since the entire magnetic flux flow passes through the stator, and then part of the electric energy of the stator is spent on creating additional magnetic flux in the ring l conductor with regulation winding.

This leads to an increase in the mass of the generator and the ear to the shape of the voltage curve, since the talk of a forksh current curve leads to a distortion of the shape of the magnetic field of an annular magnetrprb & and, therefore, distortion of the shape of the EMF curves and for example) (generator).

The aim of the invention is to improve the energy performance, simplify the design and reduce

weight and size indicators of the device.

The goal is achieved by the fact that in-contact control-. A synchronous alternating generator containing an external magnetodructor of a stator with a crust winding, located in a non-magnetic housing, a rotor with a system of permanent magnets with a system of pole lugs, and a device for: controlling the voltage in the form of an annular gear magnetic core with a winding control, setting coaxial; the generator rotor, the ring gear magnetoproduct is rigidly fixed in the housing and installed within the axial length of the pole pieces and is made with slots on the side, pole tips, and the regulation winding is toroidal.

In this case, an annular gear magteprovod can be made with in the inner side and installed on the front side of the stator magnetic conductor outside the pole pieces.

In addition, two annular toothed magnetic cores can be hollowed out with grooves on the outer side and mounted on the end sides of the rotor inside the pole pieces.

Fig. 1 shows the proposed generator, with one winding, longitudinal section; Fig. 2 shows a generator with two windings of a sub-coupling, a longitudinal section. ,,

The proposed contactless synchronous generator contains the following basic elements: a rotor (inductor) is mounted on shaft 1, consists of a star magnet 2 and a retaining ring 3 having alternating magnetic (which are pole tips) along its circumference and non-magnetic portions. In the housing 4 is fixed the magnetic core of the stator 5 and the annular toothed magnetic circuit (magnetic shunt) 6, made in the form of ring cores. Figure 2 shows two magnetic circuit 6, of which is fixed in the housing, and the other on the bearing. In the slots of the magnetic stator 5, the working winding 7 is placed. A toroidal winding 8 of the magnetic biasing can be wound around the frame 5. The magnetic shunt b is made in the form of a laminated package of electrical steel sheets, for example, from the same sheets as the magnetic circuit of the stator 5. The sheets have a pa located in the inner (figure 1) or outer (figure 2) cylindrical surface of the sheet. Sheets

- the package is electrically isolated from each other. A toroidal winding 9 of magnetic biasing is wound around the magnetic conductor of the shunt 6.

The operation of the generator is 5 as follows.

Operational. Magnetic flux 9 of the rotor-sprocket magnet is branched. One part of it - flow F passes through the stator, and the other part - flow. 0 ia branches in a ring magnetic wire, which is a shunt. Changing currents in the bias winding. the stator and in the winding of the bias shunt establish the required value of the magnetic flux in the stator and,

5 thus, the desired value. Napr -; terminals on the working winding .. - generator. Tpe6yeivttrii adjustment range is provided by the selection of the lengths of the stator and shun magnetic circuits

0 and Shunt 6 can be both external-closed (figure 1) and internal-closed (figure 2). In the general case: the stator may not have a winding 8 bias, optionally the presence of a retaining ring 3, i.e. the rotor can have any other system of pole pieces, for example, the rotor can be made. The generator may have one or

0 two shunts ;, the bearing shields and the generator housing can be made of a lightweight aluminum alloy, since they are not part of the shunt magic circuit. Performing shunt in

5 kind of charge pack reduces. eddy current losses, which reduces the duration of the transition process. -, . .

In addition, the design of the generator is simplified and reduced by

0 10-20% of its mass, since there is no need for steel casing and steel bearing shields. The axial component of the magnetic flux is absent, which expands the possibilities of using the generator. The shape of the curve of the floor in the bore of the stator is symmetrical, which improves the shape of the generator voltage curve. The design allows for easy changes.

0 t the range of voltage regulation by selection of the lengths of the magnetic circuits. shunt and stator.

The design is technologically advanced, as the shunt can be made from those

5 sheets as the stator package. The use of the proposed shunt in generators with a magnetisation of the stator сохран rm retains all the advantages of such generators and allows one to control their voltage over almost the entire range from zero to the nominal value.

Small mass of the generator, contactlessness, a wide range of regulation and high output quality.

GO voltage povol | 19T to improve the characteristics of autonomous sources of electricity teanoA power, automotive electrical equipment

and automatic process control systems in the construction industry and related areas of the national economy.

Claims (3)

1. NON-CONTACT CONTROLLED SYNCHRONOUS GENERATOR, containing an external stator magnetic circuit with an anchor winding, located in a nonmag- ·. case, a rotor with a permanent magnet excitation system with a system of pole pieces and a device for - ~ voltage regulation in the form of a ring gear magnetic circuit with a regulation winding installed coaxially with the generator rotor, because of the fact that, in order to improve its energy characteristics, simplify the design and improve? of mass and dimensional indicators, an annular gear magnetic circuit is rigidly fixed in the housing and installed within the axial length of the pole pieces, and the control winding is made toroidal. FIG. f 2. The generator according to claim 1, with the fact that the annular magnet core is made with grooves on the inner side and installed on the end side of the stator magnetic circuit outside the pole pieces. '' 3. The generator pop. 12