SU1674312A1 - Synchronous reduction motor - Google Patents

Abstract

The invention relates to low-power electric machines, in particular to low-speed motors with electromagnetic reduction of the rotational speed. The electric motor can be used in electric actuators of various automation systems. The aim of the invention is to enhance the functionality by providing a synchronous speed at a low rotor speed. Synchronous gear motor consists of a stator 1 and a rotor 2, each of which is made of three magnetically insulated modules 3 containing ring coils 4, 5, 6, covered by its own magnetic cores 7, 8, 9. On facing each other surfaces of the stator 1 and the rotor 2 there are open grooves, the number of slots of the stator 1 is equal to the number of teeth of the rotor 2, the teeth of all modules 3 of the stator 1 coincide with each other, and the modules 15 of the rotor 2 are shifted relative to each other by 1/3 of the teeth division, the coils of the stator are connected in a star, and the coils 15 , 16, 17 rotor 2 soy ineny consistently and according shorted. In each module 3 of the stator 1 there is an additional coil, the coils 11, 12, 13 are connected in series and in accordance with and connected to a direct current source. 2 Il.

Description

15 18 15 a 15/9 16/9 is 20 I M

FIG. I

The invention relates to electric machines of low power and can be used to create low-speed synchronous electric drives of working mechanisms,

The purpose of the invention is to enhance the functionality by providing a synchronous speed of rotation of the rotor at a low frequency.

FIG. 1 shows the engine, a general view; in fig. 2 - wiring diagram of the additional stator winding.

The motor consists of a stator 1 and a rotor 2. The stator 1 contains three magnetically insulated modules 3, consisting of phase coils of phases 4-6 and gear magnetic conductors 7-9. All modules 3 of the stator 1 are located in a non-magnetic housing 10. The coils of phases 5 and 6 are connected in a star. Each module 3 of stator 1 contains additional ring windings 11-13, which are interconnected in series and in accordance with and connected to terminals 14 for connection to a direct current source, as shown in FIG. 2

The three magnetically insulated modules 15 of the rotor 2 consist of ring coils 15-17, interconnected in series and in accordance with and short-circuited, and toothed magnetic conductors 18-20, located on a nonmagnetic shaft 21.

The teeth (not shown) of all the modules 3 of the stator coincide with each other, and the modules 15 of the rotor 2 are shifted relative to each other by 1/3 of the teeth division.

The engine works as follows.

The three windings 4-6 of the stator 1 excite magnetic fluxes that contain direct, reverse, and zero components. The sum of the EMF in the coils 15-17 of the rotor 2, connected in series and according to, is zero. They only induce emf components of zero-flux magnetic fluxes, varying with frequency (w -). Since the coils 15-17 of the rotor 2 are connected in series and short-circuited, it flows through them

zero current, which interacts with the field of the stator 1 and creates an asynchronous moment, which causes the rotor 2 to rotate with speed

(1-s),

 feed frequency; Z2 is the number of teeth of the rotor 2;

„(W - 22 0) 2)

Si - slip, equal.

sh

The constant current flowing through the coils 11–13 of the stator 1 excites a constant magnetic flux, which interacts with the toothed field of the rotor 2 and creates a synchronous moment. This moment synchronizes the rotor 2 with a low rotational speed.

Ј02 ft) / Z2.

Claims (1)

The motor according to the invention, in comparison with the known one, can have a constant rotational speed of the rotor 2 under load changes and has reliable start-up and synchronization. The engine can operate as a synchronous one, which expands its functionality. Claims of the invention A synchronous gear motor comprising a stator and a rotor, each of which is made up of three magnetically insulated modules in the form of two pickets and a ring winding, on the facing surfaces of the stator and rotor packages there are open grooves, the numbers of which are on the stator and the rotor is equal, the teeth of the stator packets coincide with each other, and the rotor modules are offset circumferentially relative to each other by a third of the tooth division, the stator windings are connected into a star, the rotor windings are connected together consistently and short-circuited, as well as with the fact that, in order to expand the functionality by ensuring synchronous rotation of the rotor at a low frequency, in each stator module are placed. Additional ring windings connected in series in accordance with provided with leads for connection to a DC source. // FIG. 2