SU1332472A1 - Synchronous electric motor - Google Patents

Abstract

The invention relates to electric machines of alternating current, namely to synchronous electric motors with cylindrical excitation coils. The aim of the invention is to improve the utilization of active materials and the expansion of functionality. The motor comprises a stator consisting of cores 1-6 with axial slots in the periphery. Each core is wound on a separate coil 7-12. The rotor 13, mounted concentrically with respect to the stator, contains longitudinal magnetically conducting poles 14, separated from each other by nonmagnetic gaps 15. The stator cores are rotated relative to each other by an angle determined by the formula ultrasonic (360 ° N) C , where N is the number of rotor magnetically conductive strips; K is the number of coils; From 1,2,3 ... 2 ill. W (L W 12 V Rig.1

Description

one

This invention relates to electrical engineering, in particular, to an alternating current synchronous motor, which is powered by semiconductor devices with photoelectric shifting elements.

The purpose of the invention is to increase the efficiency of the use of active materials and enhance functional capabilities.

FIG. I shows the engine, general view, isometrics; in fig. 2 is a circuit for turning on stator winding coils of a motor.

The engine contains 1stator cores, on the outer surface of which axial slots are made. On each core are placed ring coils 7-12. The outer rotor 1 mounted concentrically relative to the outer surface of the stator, consists of longitudinal magnetic conductor ni parts 14, separated from each other by non-magnetic inserts 15.

The stator cores are offset relative to each other by an angle equal to

WITH,

3 ml

NK

where N is the number of magnetically conductive parts of the rotor;

K is the number of coils;

C is an integer.

A semiconductor diode 16 is connected in series with each coil. In addition, phase-shifting elements 17-19 are connected to each pair of coils, so that the current flowing through this element 17 advances in phase the applied voltage by 60 (by appropriate selection of the parameters of this element).

Thus, the maximum current value takes place sequentially in each coil. Consequently, the rotor is positioned so that the magnetically conducting parts 14 of the rotor are above the protrusions of the stator core. Then the current reaches a maximum in the adjacent coil and the magnetically conductive parts 14

1332472

f

F o

the rotor occupy the position at which the greatest magnetic conductivity takes place between the rotor parts 14 and the stator cores, etc.

At a supply voltage frequency, the rotor speed will be 60f

P

Improvement in the use of active materials is achieved due to the simultaneous participation of rotor magnetically conductive strips in the creation of torque, and the expansion of functionality due to a change in the rotation angle of the stator cores, which allows obtaining different rotational frequencies.

rmula of invention

F o

A synchronous electric motor containing a series of axially displaced disk magnetically conducting stator cores, each of which has an annular groove in which a ring coil is placed, the stator core coils are connected in series with the diodes and phase shifted by the first elements, an external hollow rotor made of longitudinal magnetically conducting bands separated by non-magnetic inserts, characterized in that, in order to improve the use of active materials and enhance the functionality, on the outer surface The axes of the stator cores, coaxially located relative to the inner surface of the rotor, are made axially arranged slots, the number of which is equal to the number of the magnetic conductor strips of the rotor, with the stator cores being offset from each other in the tangential direction by / 3 360 °.

  -IG

where N is the number of magnetic conductive strips;

K - the number of ring coils; From 1,2,3 ...

sixteen

Compiled by V. Krasnov Editor P. Gereshi Tehred V. Kadar

Order 3844/52 Circulation 659 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG. g

Proofreader A. Ilyin

Claims (1)

Claim A synchronous electric motor containing a series of axially displaced disk magnetically conducting stator cores, each of which has an annular groove in which an annular coil is placed, stator core coils are connected in series with diodes and phase-shifting elements, an external hollow rotor made of longitudinal magnetically conducting strips separated by non-magnetic inserts, characterized in that, with [Aim of improving the use of active materials and expanding functionality on the outer surface of the stator cores coaxially located relative to the inner surface of the rotor, axially arranged slots are made, the number of which is equal to the number of magnetically conducting bands of the rotor, and the stator cores are mounted with a tangential offset by an angle = ³ 22 ° with NK * where N is the number magnetic strips; K is the number of ring coils; C = 1,2,3 ...