SU1352589A1 - Synchronous inductor motor - Google Patents

Abstract

The invention relates to electrical engineering and can be used in D / electric drives rotating at low speed. The purpose of the invention is to enhance the functionality by providing a lower synchronous rotation frequency. The stator 1 is made of a set of packages 2, in the grooves between which there is a distributed root winding 9. On the inner surface of the stator there are longitudinal teeth, and the rotor teeth 11 are curved along helical lines with a step equal to one tooth division t on a double pole division, and the step along the teeth of the rotor is equal to the step rto of the longitudinal teeth of the stator. 4 il. o & (LI 1 6 8 192 // ZW //////////// 7 7 ///////// Y Figure 1

Description

ten

15

20

25

The invention relates to electric machines and can be used in electric drives with a low rotational speed.

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

FIG. 1.2 depicts the design of an electric motor; in fig. 3 is a diagram of a part of phase A of a three-phase core winding; in fig. 4 - the relative position of the teeth of the stator and rotor.

The motor contains a stator

I, in the form of a set of axially arranged packages 2, on the inner surface of which main grooves 3 and teeth 4 are made, and additional grooves 5 in which excitation winding 6 is laid forming poles 7. Active components 8 of distribution root winding 9 of alternating current, while its frontal parts 10 are placed in the slots 5. The rotor 11 is completed in the cylinder with slots 12 and teeth 13 in the form of a multi-thread screw with a screw pitch equal to one tooth division of the rotor 1 G at the distance of double pole divided anchor coil 9 to the motor axis. The pitch of the slots 12 and the teeth 13 of the rotor 11 is equal to the pitch of the grooves 3 and the teeth and the stator around the circumference. Stator and rotor

II are fulfilled by the blended. Separate

The laminated packages 2, of which the stator 1 consists, are pressed into a non-magnetic body 14. The rotor 11 is assembled from 40 sheets of electrical steel pressed onto the shaft 15 and installed in bearings 16. Each phase is cor-. The winding 9 is made by a continuous wire in the form of a set of 45 connected coils 17, the number of which depends on the number of poles 7 and the number of pairs of poles of the main winding 9 along the motor axis. The winding 6 of the excitation covers the pole 7, the number 50

which is a multiple of any even integer.

thirty

35

The motor works as follows.

Three-phase distributed root winding 9 creates a sinusoidal electromagnetic field traveling along the axis of the stator 1 with an opposite field p

five

0

five

on each of the poles 7. The excitation winding 6 generates a constant magnetic flux (Fig. 2). In the working gap, the electrode of the needle along the axis of the stator I creates an alternating field with a constant component, as in the classical inductor machine. At this time, the rotor 11 tends to occupy a position of maximum magnetic conductivity. On the stator 1, due to the progressive teeth (the prong 4 and the groove 3 of the stator 1 and the rotor can be viewed as opposite poles), a system of poles running axially along the stator I in a checkerboard pattern (Fig. 4). Such a system of poles, moving along the stator 1 and crossing the teeth 13 of the rotor 11, will come into interaction with them, bringing the rotor 11 into rotation.

The running field moves along the stator 1, while for the period of displacement the field into a double pole division 2 & the rotor 11 will rotate by one notch division t, i.e. the rotor 11 will come into rotation with a frequency

where fp is the rotor rotation frequency П;

f - mains frequency;

Z - the number of teeth of the rotor 11, and accordingly, the reduction coefficient will be

Z.

The electric motor according to the invention has wider functionality, since it allows to obtain a low rotation frequency by creating a magnetic field running along the motor axis and making rotor slots along a helical line.

Claims (1)

Invention Formula Synchronous inductor motor containing a stator with main grooves and teeth and with a main distribution winding and excitation winding placed in additional stator slots, a rotor with teeth, characterized in that, in order to enhance functionality by providing - reduced synchronous rotation frequency, the stator made of separate packages placed along the axis of the engine, the active parts of the winding and the core are placed between the packages, and the frontal parts in the additional grooves of the stator, the grooves and teeth of the rotor are made along helical lines with a pitch the screw is equal to one tooth division of the rotor on the double pole division along the axis of the engine, and the rotor grooves and the teeth of the rotor are circumferentially equal to the main grooves and the stator teeth. / J 12. Zi 22 2 2c. 2s 2b 27 2v 2d 2fo 2y. 2f2 FIG. 2 fie.Z 1U 14 : / s / kPHy CpUff.4 Editor N.Slobod nickname Order 5573/54 Compiled by V.Tregubov Tehred M.Hodanich Corrector- Circulation 659 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Proof-V.Girn to