BG230Y1 - Electric motor - Google Patents

Abstract

The electric motor is designed for driving of machines andmechanisms. It has light-weight structure and reduced rotorintertia moment. The electromotor consists of a stator (1) with athree-phase winding (2) and magnetic circuit (3) in which a rotor(6) is resting having a short-circuited winding (7) andferromagnetic core (8). The magnetic circuit (3) of stator (1) andthe ferromegnetic core (8) of rotor (6) are made of axiallypositioned longitudinal ferromagnetic plates (11 & 13),respectively, interconnected in a fixed manner by washers (12 &14), respectively.1 claim, 5 figures

Description

An asynchronous electric motor is known, consisting of a stator with a three-phase winding and a ferromagnetic magnetic circuit with a housing in which a double-coil rotor and a ferromagnetic core are supported by side covers. The stator core and the rotor core are composed of electrically-steel transverse washers (1).

The disadvantages of the known electric motor are the large mass of the motor magnetic circuit and the large inertia moment of the rotor.

The task of the utility model is to create a lightweight electric motor.

The technical nature of the utility model

The problem is solved by an electric motor comprising a stator with a three-phase coil and a magnetic core, in which is mounted a rotor with a double-coil coil and a ferromagnetic core. According to a useful model, the stator core and the rotor ferromagnetic core are composed of axially oriented stator and rotor plates of electrical steel, with a windward cross alignment, which form the motor core of the motor. The rotor windings are axially arranged.

An advantage of the utility model is the reduced mass of the motor and the reduced inertia torque of the rotor.

Description of the attached figures

Figure 1 is a longitudinal sectional view of the motor;

2 is a cross-sectional view along AA of FIG. 1;

FIG. 3 is an exploration of the rotor in C of FIG. 1;

FIG. 3 shows a view of the rotor of C in FIG. 1 in another embodiment; FIG.

Figure 4 is a cross-sectional view of the stator at parallel plates at its poles.

Exemplary embodiments of the utility model

The motor consists of a stator 1 with a three-phase winding 2 and a magnetic circuit 3 with a housing 4, in which through the side covers 5 is mounted a rotor 6 with a double-coil winding 7 and a ferromagnetic core 8. The magnetic circuit 3 of the stator 1 and the ferromagnetic core 8 of the rotor 6 of axially oriented stator 11 and rotor 13 plates of electro-technical steel, with a fan-shaped transverse alignment of the plates 11 and 13, which form the magnetic core of the motor. The windings 7 and 10 of the rotor 6 are axially along its length. The stator plates 11 have at least one coil 2 and, in another embodiment, a second coil 9 at the other end of the plates 11. Alternatively, the stator coil 2 may be located in the middle region 20 of the plate 11.

The stator plates 11 are connected to the washers 12 and the rotor plates 13 to the washers 14. The second winding 10 of the rotor 6 has axial conductors 18 connected at its ends with electrically conductive washers 16 and 17. Adjacent to the washer 16 is the electrically conductive washer 15 of the first rotor winding 7 6. Alternatively, the washers 15 and 16 are formed as one unit. In one embodiment, Fig. 3, the wires 18 of the second rotor winding 10 are staggered relative to the respective axial wires 19 of the first winding 7 of the rotor 6, and in another exemplary embodiment, Fig. 3a, the axial wires 19 and 18 of the rotor windings 7 and 10 are coaxially arranged.

The stator 11 and rotor 13 plates are radially arranged and have parallel side walls, with the small diameters of the rotors 6 allowing the side walls of their plates 13 to be radially directed.

In another embodiment shown in FIG. 4, the plates 11 are arranged in parallel in packages, which is also optionally used for the rotor plates 13.

Using the utility model

When the windings 7 and 10 of the rotor 6 are crossed, a current is induced from the rotating electromagnetic field of the stator 1. From the interaction between the rotating field and the current in the windings 7 and 10 of the rotor 6, a torque is created. The magnetic flux 21 of the motor is closed through the stator 11 and rotor 3 plates. The use of light, non-ferromagnetic materials for the housing 4 and for the rotor shaft 6 significantly reduces the mass of the motor and the inertia torque of the rotor 6.

Claims

Claims (1)

An electric motor comprising a stator (1) with a three-phase coil (2) and a magnetic circuit (3), 5 in which a double rotor coil (6) is mounted and a ferromagnetic core (8), characterized in that the magnetic circuit (3) the stator (1) and the ferromagnetic core (8) of the rotor (6) consist of axially oriented stator (11) and rotor (13) plates of electro-technical steel, with a wind / radial / transverse alignment of the plates (11) and 13). 15 Attachment: 4 figures