BG67061B1 - Electric motor - Google Patents

Abstract

The electric motor is asynchronous and has increased functionalities. It consists of a stator (1) with a magnetic core (4) and a group of radial coil windings (2) connected to a power source (3) , and a rotor (5) with squirrel-cage (7). A second group of radial windings (6) is arranged in the stator (1) connected to the current source (3) by means of a synchronizing device (8) with a control unit (9) thereto. The synchronizing device (8) is connected to at least one group of tangential coil windings (10) oriented transversely to the radial coil windings (2, 6).

Description

Field of technology

The invention relates to an electric motor and in particular to an asynchronous electric motor.

BACKGROUND OF THE INVENTION

An asynchronous electric motor is known, consisting of a stator with a magneto conductor and radial windings connected to a current source and a rotor with a ferromagnetic core and a cage electric winding / 1 /.

This solution has limited possibilities for dynamic change of the rotor speed and direction of rotation, which reduces its functional capabilities.

The object of the invention is to provide an electric motor with increased functionality.

Technical essence of the invention

The problem is solved by means of an electric motor including a stator consisting of a magnetic circuit with groups of radial windings connected to a current source and a rotor with a cage winding. According to the invention, a second group of radial windings is formed in the stator, which like the first group of windings are connected to the current source by means of a synchronizing device with a control unit, which synchronizing device is connected to at least one group of tangential windings oriented transversely to the radial windings.

In the central opening of the rotor is located coaxially an internal stator having at least one group of radial and tangential windings connected to the current source by the synchronizing device.

An advantage of the invention is its increased functionality, allowing dynamic change of speeds in a wide range and the direction of rotation of the rotor, as well as increasing the torque.

Explanation of the attached figures

Figure 1 is a longitudinal section of the motor;

Figure 1a is a section along AA of Figure 1;

Figure 1b is a section along AA of FIG. 1 in another embodiment;

Figure 1c is an unfolding in B of Figure 1a;

Figure 2 is a longitudinal section of a stator with two groups of radial windings;

figure 3 - longitudinal section of an electric motor with two stators;

Figure 3a is a section along CC from Figure 3.

Examples of the invention

The electric motor consists of a stator 1 of a magnetic conductor 4 with a group of radial electric windings 2 connected to a current source 3 and a rotor 5 with a cage winding 7 having longitudinal electric conductors 11. A second group of radial electric windings 6 is formed in the stator 1. are connected to the current source 3 by a synchronizing device 8 with a control unit 9 to it, which synchronizing device 8 is connected to at least one group of tangential windings 10 oriented transversely to the radial windings 2,6.

In one embodiment, FIG. 1c, the radial windings 6 of the second group are arranged between the radial windings 2 of the first group, and in another embodiment, FIG. 2, the radial windings 2 and 6 of the two groups are arranged in separate sections along the stator 1.

In another embodiment shown in FIG. 3, in the central opening of the rotor 5 is arranged coaxially an internal stator 12 having at least one group of radial 13 and tangential 14 windings connected to the current source 3 by the synchronizing device 8.

Use of the invention

The radial windings 2 create a rotating electromagnetic field inducing emf. in the rotor electric conductors 11, rotating the rotor 5. In one mode, the rotor 5 is acted upon simultaneously, as a variant, by successively rotating stator fields of the two groups of radial windings 2 and 6. These fields can be changed by a rotating field of the tangential windings 10. The tangential field is

Descriptions of issued patents for inventions № 05.2 / 29.05.2020 rotates in the direction of one of the radial fields. When using two groups of tangential fields, they have the same or opposite direction of rotation. The device 8 provides synchronization between the two radial fields and between the radial and tangential fields, as well as switching off some of them. This allows a dynamic change, in a wide range, of the rotor speed 5 and its direction of rotation, as well as vibratory two-way rotation of the rotor 5. When switching from reverse rotation mode to one-way rotation mode of radial fields with windings 2 and 6, the rotor torque is increased 5.

The torque is also increased when using an internal stator 12 with its respective radial 13 and tangential 14 windings. In two groups of radial 13 and tangential 14 windings, their fields can be counter-rotating, preferably unidirectional. The design allows the installation of a second rotor, next to the first.

Claims (2)

An electric motor comprising a stator with a magnetic conductor with a group of radial electric windings connected to a current source and a rotor with a cage winding, characterized in that a second group of radial electric windings (6) is located in the stator (1), which are connected to the current source (3) by means of a synchronizing device (8) with a control unit (9) thereto, which synchronizing device (8) is connected to at least one group of tangential windings (10) oriented transversely to the radial windings (2, 6). Electric motor according to Claim 1, characterized in that an internal stator (12) having at least one group of radial (13) and tangential (14) windings connected to the current source is arranged coaxially in the central opening of the rotor (5). (3) by means of the synchronizing device (8).