SU323076A1 - INDUCTOR MACHINE - Google Patents

Description

A known inductor machine contains a multi-phase field winding on a stator connected to a variable frequency source.

In order to expand the field of application of inductor machines of the specified type, the stator of the machine is performed with two independently excited phase zones, with the coils of each phase of the multiphase core winding covering one tooth and combined in successive branches, placed on magnetically independent poles.

FIG. 1 Dan cross-section of the machine; in fig. 2 shows a winding connection diagram.

According to FIG. 1 and 2, half of the stator teeth are shifted relative to the other half by 90 electrical degrees, and the excitation is carried out by a two-phase alternating current, so that the non-shifted teeth are excited by one phase, and shifted by 90 electrical degrees by another phase.

The power supply to the excitation winding 1 by a two-phase alternating current with an angular frequency of 01 and a rotor with an angular velocity converges the flow in the stator teeth of individual parts of the core of the winding 2 when idling, will vary according to the expressions

 sin (w -f 90 °) sin ((Uj + 90 °) :: AT COS cujf COS (Bjj /

 Y A: cos (ф, - cuj) g (-f cos (u) i + (Uj.) T.

Accordingly, the expressions for ed with. will have the following form:

     T c .-.) Sin (O).

,} (- (cOj -f coj) sin (w, u) j) f

, -. i / ciK-o),) sin K - W,) +:

-f (a), + w,) sin (Mi-f cu,) ;.

With a consistent connection of both parts of the winding, the resultant e. d. will be equal to:

I l ± 2 / C (MI ± Wjj) sin ("1 ± COj),

It can be seen that the frequency can be regulated by varying the frequency of the excitation current regardless of the speed of rotation of the generator rotor.

Similar expressions can be written when the generator is loaded.

Subject invention

characterized in that, in order to expand the area of application, the stator is made with two n & 31 Yed1 mo excited phase zone: yy | 1 # KeM to-aTush. each phase of the multi-phase root winding covers one tooth and is combined into consecutive branches placed on magnetically independent poles.