Asynchronous electric motor with high efficiency factor

FIELD: electricity.

SUBSTANCE: invention pertains to the field of electric engineering, and namely to salient-pole asynchronous motors, and may be used in electric drive used for different engineering and household applications. The asynchronous electric motor comprises the stator core including polar tips and yoke assembled of electric steel sheets, a cage rotor mounted in the stator bore, the stator winding consisting of coils installed at the poles; the body is made of non-magnet material with the rigidly fixed stator core consisting of one pair of poles and yoke where resonant winding is mounted with a tuning capacitor, at that the polar tips and yoke are made as one piece.

EFFECT: improvement of the motor efficiency factor and significant reduction of consumed power.

2 dwg

 

The invention relates to the field of electrical engineering, namely the salient-pole asynchronous motors, and can be applied to the actuator used in various fields of technology and life.

The technical result of the invention is to increase the efficiency of the motor and a significant reduction of the power consumption.

The technical result is achieved by the fact that in an asynchronous electric motor contains a stator core comprising pole pieces and the yoke, which is made of electrical steel sheets having a squirrel-cage rotor mounted in the bore of the stator, a stator winding consisting of coils mounted on the pole, the body is made of a nonmagnetic material, which is fixedly mounted a stator core consisting of a single pair of poles and a yoke that has a resonant winding with a capacitor, with the pole pieces and the yoke are made constructively narashimha.

The invention relates to a salient-pole asynchronous motors and can be used in the actuator used in various fields of technology and life.

Known induction motor, containing the main stator winding comprising two coils, a wire wound on a plastic frame, split stator core, consisting of for kotoha package yoke and bundle of two poles with a longitudinal groove in each of them to install auxiliary winding in the form of a weld of the copper tape short-circuited coils, squirrel-cage rotor.

Assembled from steel plates package of two diametrically spaced poles with pole pieces interconnected by two pairs of jumpers variable cross-section, together with the coils pressed into assembled from steel plates package of the yoke.

The ratio of rotor diameter to the width of each sheet of the yoke of the stator is in the range from 1:2,36 to 1:4,4 (U.S. patent No. 5568000, IPC H02K 1/00).

The disadvantages of the known motor are low efficiency and a significant quantity of electricity consumption.

The closest in technical essence to the invention is asynchronous motor with shielded poles, containing the main stator winding, cast aluminum squirrel cage coils, covering part of the salient poles, pressed steel detachable magnetic shunts, squirrel-cage rotor (patent Czechoslovakia No. 109966, IPC H02K 17/10).

The disadvantages of the known motor are low efficiency and a significant quantity of electricity consumption.

The technical result of the invention is to increase the efficiency of the motor and a significant reduction of the power consumption.

The technical result is achieved by the fact that in an asynchronous electric motor contains a stator core comprising pole pieces and yokes is, assembled from sheets of electrical steel, squirrel-cage rotor mounted in the bore of the stator, a stator winding consisting of coils mounted on the pole, the body is made of a nonmagnetic material, which is fixedly mounted a stator core consisting of a single pair of poles and a yoke that has a resonant winding with a capacitor, with the pole pieces and the yoke are made constructively narashimha.

In Fig.1 schematically shows the design of asynchronous motor with high efficiency.

In Fig.2 shows the connection diagram of the asynchronous motor with high efficiency to the AC source.

The proposed motor is:

of the stator core, comprising pole pieces 1, 2 and the yoke 3, which are collected from electrical steel, squirrel-cage rotor 4 mounted in the bore 5 of the core, the resonance of the stator winding consisting of coils 6, 7, installed on the poles 1, 2, and capacitor 8, a non-magnetic body 9.

Asynchronous motor with high efficiency works as follows: when connected to AC coils 6 and 7, the resonance of the stator winding with a capacitor 8 on them of current flow creates a magnetic flux, pulsing along the axis 10 of the poles of a hundred the ora.

The pulsating magnetic field of the stator induces in the winding squirrel-cage rotor 4 AC.

This interaction results in the current squirrel-cage rotor with the magnetic field of the stator is generated electromagnetic torque, torque squirrel-cage rotor, and the initial starting rotation is performed by any known in the technical field method.

The basic requirements to the invention:

stable current frequency power source, the non-magnetic case.

Asynchronous motor contains a stator core comprising pole pieces and the yoke, which is made of electrical steel sheets having a squirrel-cage rotor mounted in the bore of the stator, a stator winding consisting of coils that are installed on the poles, characterized in that in the case of non-magnetic material fixedly mounted stator core consisting of a single pair of poles and a yoke that has a resonant winding with a capacitor, with the pole pieces and the yoke are made constructively narashimha.



 

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