SU641599A1 - Induction generator - Google Patents

Description

The invention relates to electric machines and can be used to produce electricity in systems whose operating conditions do not allow the use of brush electrical contacts. It is especially rational to use the invention in the presence of linear high-current lines of direct current, which are widely used in industrial and special installations. A single-phase, one-pole induction oscillator is known; the excitation winding and core ferromagnetic cores on the stator are known; on the rotor there are pole modules made of magnetically soft material I. The excitation winding of such a generator has an annular shape; also magnetically connected by a central ferromagnetic sleeve, the number of rotor modules, as a rule, differs from the number of magnetically bonded core cores (protrusions) covered by the core bubbled coils. The disadvantages of the generator are manifested in a lower EMF value due to the relatively low degree of utilization of the magnetic flux. An inductor generator is also known, which contains an excitation unit on the stator and core ferromagnetic cores covered by the core coils, and magnetically unrelated magnetically conducting segments 2J are on the rotor. This generator has a complex structure. The aim of the invention is to simplify the design. This goal is achieved by the fact that the excitation unit is made in the inner axial conductor, the core ferromagnetic cores are bipolar and are not magnetically connected to each other, and the circumference of the magnetically conducting segment exceeds the minimum circumferential distance between adjacent core cores. The drawing shows the proposed generator, a cross-section. The stator of the generator contains autonomous core ferromagnetic cores 1 n 2, covered by core coils 3 n 4, and on the rotor there are magnetic conductive segments 5 and 6 of magnetically fixed steel fixed on a non-magnetic element 7. The number is equal to the number of core cores exceeds the minimum

distance between adjacent cores in azimuth. A central axial conductor 8, which is the active part of the excitation circuit, is located in the center of the generator. The conductor 8 may be stationary or rotating. In the first case, the generator has a fallen shaft 9, inside of which a conductor is placed. In the second case, the conductor can be a shaft or a sleeve, to which a longitudinal current is supplied using a contact device (not shown).

As the rotor rotates, the magnetic resistance periodically changes in the flow path created by the central conductor, thereby changing the flux linkage of the core coils and the emf induced in them.

In the generator, due to the shunting effect of the modules at the moment they overlap the core cores, as well as due to the absence of magnetic coupling between the cores of the core and the rotor modules, the minimum flow in the core can be almost zero, which ensures a flow utilization rate of 0.5 in While in known inductor generators, this value is usually 0.35.

A feature of the generator is the ability to reduce the minimum flux in the cores of the core to almost zero and increase the degree of flow utilization.

The central conductor can be cryogenically cooled and the OVS is over-conducting or superconducting.

Perhaps the mechanical performance of the machine, in which the rotor modules are separated from the stator core cores by axial clearances.

Claims (2)

1.Bertikov A.I. Aviation electric generators. M., Ш59, Oborongiz, p. 378. 2. Certificate of author No. 119587, cl. H 02 K 19/24, 1958. 3