SU1403266A1 - D.c. electric motor - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to increase the power of the engine due to a cylindrical magnetic core forming the outer part of the magnetic system and made up of segments, some of which (4) are made of supercritical magnets, and others (5) in the neutral zone of the inductor magnet I are made of magnetite steel. Segments 4 in the zone of the poles have an ellipsoidal shape of the outer surface, and segments 5 in the zone of neutral of the inductor magnet I have a cylindrical shape of the outer surface and ellipsoid - inner. A positive effect is achieved by reducing the demagnetizing effect of the field of the core on the constant magnet, which provides an increase in the power of the electric motor, since the working magnetic flux does not decrease even with the starting values of the current of the core. 4 il. SS

Description

with y

O5 O5

cpueJ

The invention relates to direct current machines, in particular to direct current motors with permanent magnets, designed for operation in automation systems.

The aim of the invention is to increase the power of a dc motor while maintaining its dimensions by reducing demagnetizing, its influence on both the longitudinal (switching) and the transverse response of the core.

FIG. 1 shows the design of an electric motor; in fig. 2 is the same side view; in fig. 3 — paths a and b of the closing circuit (the reaction of the core and the working magnetic photocurrent of the permanent magnet, respectively;

When the engine is running in reverse mode or. during start-up, the MDS core reaches the highest values, which is accompanied by demagnetization of the inductor magnet. In the proposed design, the change 5 of the working flux DF i is 1.5 times less than the change in the working magnetic flux AF2 in the existing structures, which occurs under the action of a longitudinal demagnetizing field (Fig. 4). The impact of the Q-QAA-cross MDS core in the proposed design has been drastically reduced due to a significant increase in the magnetic resistance on the path through which the magnetic flux closes. As a result, compared with the existing machine, the working magnetic

in fig. 4 - hapakteptika demagneti-5 flow in the proposed design of the fitting, where curve 6 is characterized by 30% higher while maintaining the bari of the magnetic inductor, curve 7 is the magnets

Segment shape and curve 8 - the result of demagnetization of f (p) magnetic

Systems in general.

I The motor contains internal

inductor in the form of a diametrically magnetized permanent magnet 1, hollow measles 2

With winding, collector 3, composite magnetic conductor of segments 4 and 5 (segments 4

From a magnetically hard supercritical material, a diametrically magnetized constant LL with a high value of the coercive force, a nano magnet, characterized in that, from the chain, segments 5 are made of a magnet of mild steel). How to increase the power of an electric motor In the proposed device, the protection is preserved while maintaining its dimensions by means of a low-magnet inductor made of an alloy or a demagnetizing effect of the floor

The UNDC, from the influence of MDS core on a permanent magnet inductor, magN as by obtaining a flatter 30 nitropowder made of segments, one of

) the characteristics of the demagnetization of F (F) which are located in the zone of the poles and

(1FIG. 3) The magnetic systems of an electric motor are magnets from a supercritical maf, and due to a significant increase in

Magnetic resistance to flow from

transverse MDS core (magnets with linear

x degaussing characteristics have a mag- 5

nitrate permeability approximately equal to

20

products, which indicates an increase in the power of the machine.

Claims (1)

Invention Formula A direct current motor containing a cylindrical magnetic core, hollow non-magnetic measles with a winding, and an internal inductor, representing comM (magnetic permeability of vacuum). At the same time, the dimensions of the machine do not increase, since the steel of the magnetic core is better used in this construction. The material, while others are located in the neutral zone of the magnet inductor and consists of a soft steel magnet, with the segments in the pole zone having an ellipsoidal shape of the outer surface and cylindrical - inner, and the segments in the neutral zone of the magnet inductor have a cylindrical shape of the outer surface and ellipsoid - internal. but 30% higher while maintaining r bariba g diametrically magnetized constant products, which indicates an increase in the power of the machine. Invention Formula A direct current motor containing a cylindrical magnetic core, a hollow non-magnetic bore with a winding, and an internal inductor representing the material, while others are located in the neutral zone of the magnetic inductor and consist of a soft steel magnet, the segments in the pole zone have an ellipsoidal outer surface and cylindrical - internal, and the segments in the neutral zone of the magnet inductor have a cylindrical outer surface and ellipsoid - internal.  / fig , f but zoo