RU1809503C - Direct current electric motor - Google Patents

Abstract

Usage: electrical engineering. SUMMARY OF THE INVENTION: A DC motor comprises a stator, measles, bearing assemblies, a collector, a conductive device. On the stator are main poles with field windings. The core winding is made of U-shaped sections. Sections are placed in the grooves of the core symmetrically to the poles. The current-carrying device is located on the collector. The main pole can be made of two displaced cores and the variable resistor is placed on the stator. 2 s.p., f-ly, 5 ill.

Description

ate with

The invention relates to electrical engineering and can be used in direct current electric motors, in particular in locomotive traction electric motors.

The purpose of the invention is to increase power and reliability.

In FIG. 1 shows a cross section of a stator and core; in FIG. 2 - isometric view of the core; in FIG. 3 - cross section of an electric motor with 32 conductors core; in FIG. 4 is a diagram of the laying of U-shaped cores of the core winding; in FIG. 5 is a diagram of the conductors of the coils of the main pole.

The direct current electric motor contains a stator 1, with the cores of the north (N) and south (S) poles fixed with coils 2,3 and 4,5. On the cortex 6, in the grooves 7 of the iron package, conductors 8 and 9 are placed (Fig. 3 with two-layer laying) or one conductor with active sections

1c or 5c and the 1l section of the frontal parts connecting them (Fig. 1). In both cases, each section is a different rod, the ends of which are sunk into the collector plates 1k, 2k, ... 16k (Fig. 1,2 with the number of conductors N, n 16) or 1k, 2k, ..., , 32k (Fig. 3 with NS years 32). The middle parts of each U-shaped rod are placed symmetrically relative to the magnetic fields of the north (5c of Fig. 2) and south (1c of Fig. 2) fields. Current-carrying devices 10-23 allow current to flow through the electric motor. The variable resistance resistor from the current-conducting rods 24 and 25 is fixed in the insulating sleeve 26. The sliding contact 27 is connected by a rod to a piston 28 located in the power cylinder 29. The field winding is provided with terminals 32, 33.

Current core through conductive devices - cable 10, bus 11, collector00

oh yo oh

with

1k, 2k, 16k plates are distributed along the conductors in the area of one main pole (Fig. 1, 2), and in the form of components of Jn flows through the active part of the conductor (16s, 1s, 2s), along the frontal parts 16l , 1l, 2l and their second active part 4s, 5s, 6s in the zone of the second main pole. Further, the current passes to the collector plates 4k, 5k, 6k, bus 12, cable B and bus 14 to the collector plates 8k, 9k, 10k, with U-shaped conductors with sections 8s-8l-12s. 9s-9l-13s, 10s-10l-14s, from them to the collector plates 12k, 13k, 14k and cable 16. In this embodiment, the core current flows sequentially in 12 sections of the winding in the form of G-shaped rods. At the same time, the current in each section is 1Jn 1/3. In the embodiment of the circuit of FIG. 3 the current of the 1st core through the current-carrying bus 6 by 14 flows will pass under the poles of Sn, Si2, and then through the frontal sections of the sections through the sections of the conductors of these sections in the zone of operation of the coils Nn, N22 of the north poles and bus 12, 12: to the power circuit electric transmission of a locomotive.

The execution of each of the main poles from the cores and the two coils 2, 3 displaced relative to each other makes it possible to obtain a concentrated magnetic flux by the relatively short magnetic lines Mi2 - M21, M21 - Mi2 between the coils of the south and north poles and to refuse to use additional poles. With such cores and magnetic systems, conductors laid in slots 29p, 5p, 13p, 21p (Fig. 3) or Zn, 7p, 11l, 15p (Fig. Prove to be de-energized and they are not affected by the magnetic field of the poles, so there is no need for suppression of switching phenomena in these conductors.

In the absence of compressed air or oil in the fitting 30, the piston 28 under the action of the spring 31 moves to position 28, while the sliding contact

occupies position 27 of the disconnection of the electrical circuit between the conductive rods 24 and 25. In this case, the excitation current passes without attenuation along

coils 2, 3 of the main poles. TED realizes maximum power at reduced rotational speeds of the core shaft, controlled by the voltage at the field winding terminals 32, 33. Shunting the current in the field winding with increasing locomotive speed is realized by the automatic transmission system of the locomotive, which supplies compressed air or controlled pressure oil through the nozzle 30.

Claims (3)

5, Depending on the position of the piston 28 and the contact 27, the total resistance RUI of the rods 24 and 25 changes and a decrease in the field current is achieved. The claims 0 |. A DC motor containing a stator with an alternating-pole magnetic system, consisting of main poles with field windings, the core, in the slots of which the winding is placed, under rosehip nodes, a collector, characterized in that, in order to increase power and reliability, the core winding is made in the form of U-shaped sections, the linear active parts of which 0 are arranged in groups in the grooves of the core symmetrically with respect to the stator poles, with one end of the section connected via a collector to a conductive device under the north pole, the other under the south5 pole, and the conductive device itself is placed on the collector. 2. The electric motor according to claim 1, with a tout and the fact that each main pole is made of two cores displaced relative to each other. . 3. An electric motor according to claim 1, characterized in that it is equipped with a variable resistance resistor placed on the stator.