RU2663207C1 - Device for connecting electrical elements of electric rotary machine - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, primarily to the manufacture of electrical machines. Device for electrically connecting the elements of the circuit of the machine is multilayered and comprises plate-like conductors separated by insulating layers in the form of a sandwich structure, and has a cylindrical shape in the form of a shell, when coaxially mounted on the body of the machine or the shape of a flat ring when mounted at the end of the housing, and correspondingly to the phases of the supply circuit consists of at least three conductive layers. For the first installation variant, the planar scanning of the insulating layers has the form of a rectangle, for the second variant, each of these layers looks like a washer, and the conductive layers have bends connected to the winding and other electrical elements of the machine and protruding beyond one of the outer edges of the insulating layers against the corresponding phase terminals of the sections and coils of the winding, and also in the vicinity of other elements of the machine such that each conductive layer of said first three is a common circuit of each phase and connected via a corresponding lobe to one of the phase inputs of the supply circuit. Number of other conducting layers is determined by the number of signal and other elements of the machine.

EFFECT: increased performance characteristics of the machine.

1 cl, 3 dwg

Description

The invention relates to electrical engineering, mainly to the manufacture of electrical machines. It can be used, for example, in a traction electric drive motor and a motor wheel with a combined Slavyanka winding.

A known method of connecting the terminals of the sections or coils of the windings of electrical machines, which consists in parallel or serial connection of the terminals with each other by welding or soldering them, followed by isolation by manually wrapping the tape or putting on insulating tubes.

This method is time-consuming, characterized by low quality joints and high consumption of electrical insulation materials.

The known method and device of connection (AS USSR No. 249456, publ. 15.11.75, bull. No. 42 - analogue and prototype), reducing the amount of manual labor and material consumption while improving the quality and reliability of the connection of leads, while there is no need in the harness due to the strength of the connection and the absence of isolated connections and coils on the frontal parts.

In this method, washers are placed coaxially from the electric cardboard with holes at the end of the stator, copper jumpers are installed in the form of wire staples, the backs of which are clamped by the ring parts of the washers, and the ends are brought out and connected by welding to the leads of the coils and the power network.

The disadvantage of this method is that in the case of combined windings (a star in a triangle) and a large number of pole pairs, for example, 2p = 16 or more, the use of this method is technically difficult, and a large number of necessary brackets increases the thickness of the frontal part to unacceptable level.

The technical result of the invention is to increase the operational characteristics of a synchronous machine by aligning the values of the electrical resistance of the sections and coils of the winding. In addition, the complexity of the assembly of the stator winding is reduced by welding or soldering the conclusions of the sections or coils, possible mechanization and automation, the reliability of the connections and the heat sink of the winding are increased.

The specified technical result is achieved in that the device for connecting electrical elements of an electric rotating machine includes insulating layers, conductors between them and contact connections (taps) of the contacts. The multilayer device, in contrast to the prototype, contains plate conductors separated by insulating layers in the form of a sandwich structure. The device has a cylindrical shape in the form of a shell when it is coaxially mounted on the machine body or in the form of a flat ring when mounted on the end of the body and, accordingly, the phases of the supply circuit, consists of at least three conductive layers. Installation of the device is desirable to ensure thermal contact with the housing. For the first installation option, the planar scan of the insulating layers has the form of a rectangle (Fig. 1), for the second embodiment, each of these layers has the form of a washer. The conductive layers have contact petals (taps) connected to the winding and other electrical elements of the machine and protruding beyond one of the outer edges of the insulating layers (Fig. 2, 3) opposite the corresponding phase leads of the sections and coils of the winding, as well as near other elements of the machine so that each conductive layer of the first three is a common circuit of each phase and through a corresponding lobe is connected to one of the phase inputs of the supply circuit. The number of other conductive layers is determined by the number of signal and other elements of the machine.

The device may differ in that if there is a “star” circuit in the winding, it contains a conductive layer for connecting the “star” zero point.

The application of the alleged invention

An example of the application of the alleged invention is the connection of the electrical parts of the traction motor with the combined windings of the motor-wheel drive of size 318 to equip a small vehicle (electric bike) in the process of assembling the engine.

Captions to figures

FIG. 1. The shape of the first three conductive layers for the first installation option.

FIG. 2, 3. The location of the contact petals (taps) of the conductive layers of the device on the motor wheel.

Claims (2)

1. A device for electrical connection of circuit elements of an electric rotating machine, including insulating layers, conductors between them and contact connections (taps) of contacts, characterized in that the device is multilayer, contains plate conductors separated by insulating layers in the form of a sandwich structure, and has a cylindrical shape in the form of a shell when it is coaxially mounted on the machine body or in the form of a flat ring when mounted on the end of the body and, accordingly, the phases of the supply circuit consists of at least three conductive layers, while for the first installation option, a planar scan of each of the insulating layers has the form a rectangle, for the second embodiment, each of these layers has the form of a washer, and the conductive layers have contact petals (taps) connected to the winding and other electrical elements of the machine and protruding beyond at one of the outer edges of the insulating layers opposite the corresponding phase outputs of the sections and coils of the winding, as well as near other elements of the machine so that each conductive layer of the first three is a common circuit of each phase and is connected to one of the phase inputs of the supply circuit through a corresponding lobe, the number of other conductive layers and, accordingly, the petals is determined by the number of signal and other elements of the machine connected to the conductive layers. 2. The device according to claim 1, characterized in that if there is a "star" circuit in the winding, it further comprises a conductive layer for connecting the zero point of the "star".

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