CN2146807Y - Double-winding stator electric motor - Google Patents

Abstract

The utility model relates to a double-winding stator motor of which the stator is wound with a main and a secondary windings. The utility model is additionally wound with a parallel secondary winding coil besides the main winding coil of the stator. The head end of the secondary winding coil is connected with the tail end of the main winding coil. A capacitor is connected between the tail end of the secondary winding coil and the head end of the main winding coil in series. The utility model inducts the reversal electromotive force generated by the winding coils of the stator to the secondary winding coil, stores the reversal electromotive force by the capacitor, and releases the reversal electromotive force in following half period by phase shift. The utility model has the advantages of high work efficiency and simple structure, and prolongs work time and service life.

Description

Double-winding stator electric motor

The utility model is a kind of double winding stator motor that is wound with main and auxiliary two windings on stator.

Existing motor is made up of stator and rotor, all is wound with one group of stator coil on each stator.In the course of the work, the magnetic field that each stator produces replaces the cutting rotor coil, drives rotor rotation.

Existing this motor, when the sine wave AC electric current by the stator winding coil by positive half wave to negative half-wave transition or by negative half-wave during to the positive half wave transition, in stator winding, produce a reverse electromotive force, this electromotive force has not only slackened the magnetic field that stator coil produced and has reduced the operating efficiency of motor, but also causes the stator coil heating easily.Existing the most effective of motor can reach 61%.

The purpose of this utility model is to design a kind of double winding stator motor that is wound with main and auxiliary two winding coils on stator, main winding is sensed the auxilliary winding to negative half-wave transition or from the inverse electromotive force that negative half-wave is produced during to the positive half wave transition from positive half wave at electric current, and this part energy reserve is got up with electric capacity, in following half current cycle, discharge and make positive work, be used to improve the operating efficiency of motor.

The utility model increases outside the main winding of stator around an equidirectional auxilliary winding coil, and the initiating terminal of auxilliary winding coil links to each other with the tail end of main winding, is connected in series an electric capacity between the tail end of assisting winding coil and the initiating terminal of main winding.

Compared with prior art, the utlity model has following advantage:

1. main winding is got up phase shift to down half period discharge to negative half-wave transition with after the inverse electromotive force that negative half-wave is produced during to the positive half wave transition is sensed auxilliary winding coil with the electric capacity deposit from positive half wave at electric current, then do positive work, not only improved the operating efficiency of motor, and overcome the shortcoming of existing electric motor overheating, prolonged the operating time and the useful life of motor greatly; Efficient of the present utility model is higher than 80% through actual measurement;

2. simple in structure being easy to of the utility model realizes manufacturing.

Accompanying drawing is an embodiment of the present utility model.

Accompanying drawing 1 is the general structure schematic diagram.

Accompanying drawing 2 is main and auxiliary winding coil wiring schematic diagrams.

The utility model will be further described below in conjunction with accompanying drawing, and in this embodiment, the utility model is made up of casing (1), stator (2), rotor (3),

(1). increase outside the stator winding coil (4) of each stator and be wound with stator auxiliary winding coil (5), the initiating terminal of stator auxiliary winding coil (5) links to each other with the tail end of stator winding coil (4), be serially connected with electric capacity (C) between the initiating terminal of tail end and stator winding coil (4);

(2). stator auxiliary winding coil (5) is 35:65 with the turn ratio of stator winding coil (4).

Claims (1)

1, the double winding stator motor is made up of casing (1), stator (2), rotor (3), it is characterized in that:

(1). increase outside the stator winding coil (4) of each stator and be wound with stator auxiliary winding coil (5), the initiating terminal of stator auxiliary winding coil (5) links to each other with the tail end of stator winding coil (4), be serially connected with electric capacity (C) between the initiating terminal of tail end and stator winding coil (4);

(2). stator auxiliary winding coil (5) is 35: 65 with the turn ratio of stator winding coil (4).

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