SU1387129A1 - Wave electric motor - Google Patents

Abstract

This invention relates to electrical engineering and can be used in a high-speed electric drive. The goal is to simplify the design and increase the output power. The motor contains a stator with an electromagnetic system in the form of a ring system of individual electromagnets 2. Inside the stator 1 there is a flexible link 3 made of magnetic material and an output shaft 4, to which the carrier 5 is connected with rollers 6. On the carrier 5 there are two groups of permanent magnets 7. a On the stator 1 two groups of hermetic contacts 8 are placed. When diametrically opposite electromagnets 2 are actuated. They are displaced relative to the axis of symmetry of the carrier 5, there are component forces that ensure the displacement of the plane of deformations and the flexible link 3, acting on the rollers 6, which transmit the rotation to the output shaft 4. The permanent magnets 7, n hermetic terminal 8 is carried out sequential switching electromagnets. 2 hp f-ly, 9 ill. / 7 S (L SA :) oo y co

Description

for permanent magnets) sealed contacts 8.

Each pair of sealed contacts 8 located on the same radius of the end 5 of the stator surface (on one side of the shaft axis 4) corresponds to one electromagnet 2 mounted on the cylindrical surface of the stator 1 (Fig. 1 and 2). Permanent magnets 7 and pins 8, normally open two parallel

The size of the gap between them is chosen in such a way as to ensure the effect of permanent magnets on the sealed contacts. The permanent magnets are located at

The invention relates to electrical engineering and can be used in a high-speed automated electric drive.

The aim of the invention is to simplify the design and increase the output power.

FIG. 1 shows a motor, longitudinal section; in fig. 2 - section aa

in fig. one; in fig. 3 shows a section BB in FIG. 1; normal open-circuited; FIG. 4, the force acting on the rotor Yu is agated in two parallel planes. engine; in fig. 5 - motor, option, longitudinal section; in fig. 6 - the same cross section; in fig. 7 is a diagram of the forces acting on the engine rotor; in fig. 8 and 9 - electric motors, circular arc. And they overlap at least the versions, longitudinal section of two sealed contacts with each

the sides of the shaft 4. Thus, a portion of the hermetic contacts opposite the permanent magnets 7 is closed.

The device works as follows. When power is applied to the contacts 8 (for example, the internal row), only those electromagnets 2 that are connected to closed contacts 4 are driven, 5 are driven by rollers 6, and the mechanism is 25 contacts.

the mutations of the electromagnetic system, content-electromagnets 2, attracting flexible link 3, move the initial plane of deformation determined by the position of the carrier 5. A component of attractive forces of the flexible link 3 appears by electromagnets 2, the possibility of interacting with a constant symmetrical axis - mi magnets. Driving carrier 5, the carrier turning occurs and

Electromagnets 2, fixed by an unassigned output shaft. The scheme for decomposing forces on the stator is located equally in FIG. 4. Rollers 6 rolling around the flexible link 3. The flexible link is wound along the flexible link. mounted on rollers with tension, near As soon as the carrier 5 turns through an angle,

The CMM is the largest gap between an electromagnet equal to the angle between adjacent contacts 8, yarns 2 and flexible link 3. The rollers b fixed magnets 7 move together fastened on the carrier 5 through the ball and carrier 5. In this case, one bearings 9 with axles 10. Drove 5 of subdia diametrically arranged contacts 8 is visually fixed on the output shaft 4, and the shaft of the inner row, and one pair is opened. 4 on il ball bearings and 12 set- At the same time, the next lei in the stator with the stator cover 13 is turned on. In the course of rotation of the carrier 5, a pair of electric motor (Fig. 1) contains a stator 1, an electromagnetic system, consisting of individual electromagnets 2 fixed fixedly on a cylindrical stator 1 and evenly spaced along the 20 circumference of its internal cavity with the possibility of acting on a flexible link 3, made of magnetic material; the motor also contains an output shaft

craving permanent magnets 7, mounted on a carrier 5, and hermetic contacts 8 sensitive to a magnetic field, mounted on the inner end of the stator 1 s

On the carrier 5 there are fixed two groups of permanent magnets 7 located on two concentric circles (Fig. 2), arranged in a row along the arc. Each group, consisting, for example, of magnets, consists of: 4-6 magnets, respectively, on diametrically opposite sides of shaft 4. Both groups of permanent magnets are shifted relative to one another by an angle of 90 °. The first group of magnets is located on

magnets 2 and one pair is turned off, etc. Continuous rotation of the carrier will occur 5.

When the power is turned off, the output shaft stops, and when turned on, it is necessary to apply power to the group of sealed contacts 8 of the external row. Similarly, the reverse rotation of the carrier 5 and, respectively, the inner circumference, the second — on the outer shaft 4 — takes place.

her. The first group of magnets is snuffed from — the number of electromagnets can be

relative to the axis of symmetry drove 5 to some six or more. Instead of a sealed second angle equal to a clockwise contacts, mag- (E-. Right) can be used, and the second group - by an angle and pro-diodes, which allow to provide a clockwise miniature clockwise (to the left).

On the inner end surface of the stationary electromagnets, torus 1 (Fig. 3) are uniformly distributed along two concentric circles (circles of the same size as

The device of FIG. 5 and b allows to obtain approximately 2 times the value of the torque, but with some permanent magnets, hermetic contacts 8.

Each pair of sealed contacts 8 located on the same radius of the end surface of the stator (on one side of the shaft axis 4) corresponds to one electromagnet 2 installed on the cylindrical surface of the stator 1 (Fig. 1 and 2). Permanent magnets 7 and pins 8, normally open two parallel

The size of the gap between them is chosen in such a way as to ensure the effect of permanent magnets on the sealed contacts. The permanent magnets are located at

Normally open, they are located in two parallel planes. arc of a circle. and overlap at least two sealed contacts with each

equal to the angle between adjacent contacts 8, the permanent magnets 7 move together with the planet carrier 5. This will close one pair of diametrically located contacts 8 of the inner row, and one pair will open. At the same time, a pair of electromagnets 2 is switched on in the course of rotation of the carrier 5, and one pair is switched off, etc. A carrier will continuously rotate 5.

 electromagnets,

The device of FIG. 5 and b allows to obtain approximately 2 times the value of the torque, but with some

The complexity and complexity of the design compared with the engine of FIG. 1-3.

Unlike the first motor, a second row of electromagnets 14, located on the inner side of the flexible link 3, which is installed in the gap between electromagnets 2 and 14, is introduced into the device (FIGS. 5 and 6). Each diametrically located pair of sealed contacts 8 corresponds to two pairs of electromagnets. (one pair - diametrically located electromagnets of the external row, the second pair - electromagnets of the second row displaced by 90 °).

The device works as follows.

The power supply is applied through contacts 8 to groups of electromagnets 2 and 14, which are offset 90 ° from each other. FIG. 7 is a diagram of the decomposition of forces acting on a flexible link 3 and drove 5. A group of magnets 2 stretches link 3 by forces P, and magnets 14, attracting a flexible link inward, compress it by forces R. Equivalent R forces P and P2 are equal to their sum, and the force that generates the rotational moment is R R-cosa, where a is the angle of displacement of the forces PI and Pr with respect to the axes of symmetry of the carrier 5.

When the electromagnets 2 and 14 are turned on, the carrier 5 tends to move to a new plane of deformation, determined by the position of the included electromagnets. The switching of the next pairs of electromagnets is carried out by the switching mechanism similar to the first motor. The difference lies in the fact that not one pair of diametrically located magnets, but two pairs displaced by 90 ° relative to each other (one pair of external row and one pair of internal row) is connected in series in operation.

The device in FIG. 8, in contrast to the first, has a higher efficiency and is more sensitive to changes in the parameters of the controlled voltage. In the third device, in contrast to the first and second, a flexible link 3 is proposed to be made of a non-magnetic material, for example aluminum or titanium alloy, or plastic. The modulus of elasticity of the material of such a flexible link in a metal non-magnetic design is 2 times lower than that of steel and even lower in a plastic version. Losses due to deformation of a flexible non-magnetic of non-ferrous alloys or a metal link are less than in the first variant of the device. The design introduced a system of independent two-arm 15, installed directly in front of the electromagnets 2 and made of magnetic material. One arm of the lever 15 serves as the movable end of the magnet system of the electromagnet, and the second rests on a nonmagnetic flexible link 3. When the electromagnets are turned on, the 2 levers 15 turn5

0

About 5

and with the second shoulders press the flexible link 3, to deform it.

The device operates in a mode similar to the first option and uses the same switching mechanism.

The device in FIG. 9, in contrast to the first and third, contains two rows of electromagnets 2 and 14, and in contrast to the third, two systems of independent two-arm levers 15 and 16. The levers 15 and 16 with one arm interact with electromagnets 2 and 14, respectively, and the second with a flexible link made of non-magnetic material. In this case, the levers 15 tend to compress the flexible link 3, and the levers 16 - to stretch. The decomposition scheme is similar to that shown in FIG. 7. The switching of electromagnets is similar to the second engine. The device operates in a mode similar to the second engine. The moment of rotation in the fourth version is about 2 times higher than in the third, but the device is somewhat more complicated and has a greater mass.

The motors (Figs. 8 and 9) can have a wide range of applications in devices with high sensitivity to varying controlled voltage, for example, servo drives, as well as low-noise devices, since the material of the plastic flexible link has a lower damping factor compared to by steel.

The proposed device has a higher output power compared to the known ones by increasing the frequency of rotation of the output shaft.

In addition, compared with the known high-speed synchronous motors, the proposed electric motor has an increased speed approaching the speed of the known wave electric motors.

Claims (3)

1. A wave electric motor comprising a stator with a winding and a rotor made in the form of a flexible thin-walled cylindrical shell supported on a cam, characterized in that, in order to simplify the design and increase the output power, it is equipped with a switching mechanism supporting cam At least two rollers, which are not connected to the output shaft, the electromagnetic system of the stator is made of at least six electromagnets with U-shaped cores with coils, evenly spaced nnyh circumference of the stator, and the switching mechanism is in the form of a double ring system sealed contacts and the corresponding two annular groups of permanent magnets mounted on the carrier. 2. An electric motor according to claim 1, characterized in that the electromagnetic system of the stator is provided inside the flexible shell with a second group of electromagnets, concentric first, the number of which is equal to the number of electromagnets of the external group. 3. Electric motor on PP. 1 and 2, characterized in that it is provided with two shoulders levers according to the number of electromagnets, and the electromagnets are rotated 90 ° relative to the motor axis, and each electromagnet has a double-arm lever attached to the stator with the ability to interact with one arm with the electromagnet core, and the other with a flexible rotor shell, with two shoulders made of magnetic and shell - from non-magnetic materials. / d o ( FSh.2 7 FIG. FIG. five P FIG. five (rig 7