SU2706A1 - Electric generator - Google Patents

Description

The action of a modern current generator is based, as is well known, on the induction of electric current in a system of closed conductors by intersecting them with magnetic fluxes created by electromagnets or core poles, and this intersection is achieved in practice by rotation or reinforcement with a fixed crust, or vice versa.

To create a magnetic flux, a core of arbitrary shape is needed, with a wire wrapped around it, through which current flows. If the core is represented as a low but strongly stretched parallelepiped and two such cores are placed adjacent to each other, and together with their windings rolled by their lower bases, onto an iron (or steel) cylinder along a helical line in one turn, This winding will create a magnetic flux, the field of action of which, corresponding to the helical form of the cores of the poles, will also be located along a helical line: the flow will come from one ridge of the screw thread (pole L) and enter the other (pole S).

If, then, placing one wire of a closed conductor above each ridge of the above-mentioned cutting and, leaving the latter stationary, begin to rotate the screw, then all the data will appear to show induction currents in this conductor.

It is obvious that the phenomena occurring in the conductors of fixed reinforcement during one revolution of the core are completely identical with those that would result in moving the non-rotating core along its axis by the length of one cutting step. During one revolution of the core, when it is a two-way screw, the direction of the current in each closed armature conductor changes twice; consequently: two-way measles corresponds to the core of a conventional bipolar machine; four-way - corresponds to the koryu four-pole machine, etc.

Based on these considerations, the author proposes an electric generator, shown in a longitudinal sectional view in FIG. 1 and in cross section in FIG. 2. A rotating hollow cylindrical inductor A of a multiphase current generator consists of two identical BB screw spiral spiral steel spirals of a coryt profile, screwed into each other, forming helical protrusions protrusions and canals L1 between them. Into the grooves of the reverse grooves formed by the projections BBj, the magnetizing winding HG- is placed so that on the protrusions BB-i, when passing through the DC winding, the poles of the north and south polarity are formed. The inductor is vented by screw cuttings that separate the projections BB-i along their entire length into two equal parts, which, for the rigidity of the system, are only & some places have strong bonds between themselves. The stationary measles of the generator is a hollow cylinder, which, like in conventional generators, consists, in order to attenuate Foucault currents and to achieve proper ventilation, from iron sheets D separated between themselves by air vents and air products and lying, in contrast to the conventional arrangement of them, but in relation to this case, the direction of movement of the tight currents along the core axis, in the planes passing through the axis of the latter, and not perpendicular to it.

On the inner surface of this cylinder there are helical grooves with a BU, of the same pitch and direction as on the rotating inductor, in which the conductors forming the generator winding are placed, although the number of thread cuts depends on: 1) the type required from the alternator current and 2) on the number of threads of the inductor, and for each individual case is determined by simple considerations.

Having the screw poles and the corresponding measles in the reverse order of the above, and supplying the rotating measles with an ordinary collector, a screw generator for direct current is obtained.

By the use of screw poles to current generators, in the author's opinion, the following is achieved: a) better utilization of copper windings, due to the fact that almost the entire length of conductors is valid, b) greater uniformity in the distribution of the magnetic field, due to the continuity of the line of action of the poles, c) reversibility depending on the angle of the screw thread, d) a decrease in the total number of core conductors, due to the greater length of each of them and, as a consequence, a decrease in the core response and the number of plates to the collector and, consequently, the simplification of the collector and the possibility of obtaining voltage limits unattainable for direct current, e) increasing the efficiency, due to the reduction of magnetic leakage and self-induction and e) reducing the weight, size and, consequently, the cost of generators, as a result of the indicated arrangement of the rotating parts, their currently admissible rotational speeds can be significantly increased.

P R E d M E t P l t E N t L.

1. Electric generator of multiphase current, characterized by the fact that a) a rotating hollow inductor A consists of two identical screw steel spirals B, B of a trough profile, screwed into each other, forming two screw projections B, BI and two identical screw projections on the cylindrical surface of the inductor with respect to each other, the directions of the groove in which the magnetizing winding F, fj is laid, so that when DC is passed through it, on the projections B, B of the inductor, screw poles of the northern and southern fields are formed STI and b) a stationary armature of the generator is made of sheet metal A in the form of a hollow cylinder arranged on its inner surface or in the

a different number, depending on the desired number of current phases, BINT grooves E, EI of the same pitch and direction as on the rotating inductor, in which the conductors forming the generator winding are laid.

2. Modification of the generator described in paragraph 1, characterized in that the screw poles are arranged stationary, and the corresponding chip is rotating and provided with a collector for obtaining direct current.

Photo-lithograph Red Pechatnik, Yaentsngrad, International, 75.