SU1453542A1 - Thyratron motor - Google Patents

Abstract

The invention relates to electrical and machine-building, in particular to high-power, non-pole-pole engines (turbo engines). The aim of the invention is to increase the power density and increase the reliability of the motor. Damper comb damper winding 5, placed in large grooves 9, are located on a radius greater than the radius of the damper combs 6 grooves of the excitation winding 10 of the valve motor .1 zp. f-ly, 3 ill. (L

Description

The invention relates to electrical engineering, in particular, to powerful high-speed non-polarized motors (turd engines) operating from TiriS: TORN frequency converter (TFC) in the mode of a valve electric motor (HP), the rotor of which is made of a solid ferromagnetic POKOV1SI according to the turbo motor type.

The purpose of the invention is to increase the power density and increase the electric motor's remoteness.

FIG. 1 shows the rotor of the engine, cross section; in fig. 2 and 3 - damper comb small grooves.

The rotor 1 of the engine contains a wedge 2 of the small groove 3 in the large tooth 4. The damper winding 5 is made of two parts in the form of segments of the damping comb 6, the small groove 3 with the frontal part 7 and the segment of the damper comb 8 of the large groove 9 of the winding 10 of the winding 10 with the frontal part 11 The damper combs 6 and 8 are arranged concentrically and interconnected electrically and mechanically in the zone of the frontal parts 7 and 11. A wedge 12 is placed in the large groove 9. Between the segments of the damper combs 6 and 8 there may be located a ring 13 of electrically conductive material to k This priligeshrt frontal parts 7 and 11.

The motor works as follows.

When the stator winding is turned on to the thyristor converter, and the excitation winding 10 to the DC source, due to the interaction of the fields of the rotor 1 and the stator, a moment occurs which causes it to rotate. The damper winding provides both acceleration of the engine and damping of the fields of higher harmonic fields in the grooves of a large tooth.

In the large tooth 4 of the rotor 1, the height of the grooves 3 is made from taking into account only the height of the placed damping comb 6 and the height of the wedge (Fig. 1). Since the wedge 2 in the grooves 3 of the large tooth 4 only holds damping comb 6, its height will be several times less than the height of the wedge 12 fixing the large groove 9, winding 10 of exciter and damping comb 6 are located in the mutator.

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It should be noted that the total copper volume of the damper winding of a known electric motor and the one proposed is the same, i.e. The height in the grooves of the excitation winding and the grooves of the large tooth is the same.

Thus, the damper comb 6 substantially approaches the | g surface of the rotor 1, the surface layer of which turns out to be heavily shielded by it and almost completely penetrates the field of higher time harmonics, the currents of which close to 5 seconds along this damper comb 6 with a small active resistance. In the case where the radius of placement of the damper comb 6 grooves 3 of the large tooth 4 is substantially larger than the radius of placement of the damper comb 8 of the large grooves 9, between these parts of the damper winding 5 in the area of the frontal parts 7 and 11 is placed a ring 13 of well-conducting material to create contact between both damping combs and efficient operation of the entire damping winding 5 as a whole.

The proposed engine has an increased specific power compared to the known one, since when the damper winding is placed closer to the rotor surface, it is better that I dampen the upper harmonic field and thereby reduce the power loss in the rotor.

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Claims (2)

1. A valve motor containing a stator with a T-phase winding connected to a frequency converter, a non-pole massive rotor with an excitation winding placed in the slots, a damper winding on the rotor made in the form of comb segments, the crests of which are placed in the slots of the rotor above the excitation winding under the wedge and in the grooves made on the large tooth, characterized in that, with The purpose of increasing the specific power and increasing the reliability of an electric motor is that the damper winding is made of two parts, one of which is located in the grooves of the excitation winding, and the other in the grooves of the large tooth concentric with respect to the first part of the damper winding and above, Both parts of the damping winding are interconnected electrically and mechanically in the area of the frontal parts. 2. An electric motor according to claim 1, characterized in that between the segments of different parts of the damper winding there is a ring of electrically conductive material adjacent to the frontal parts of the segments. V Editor N.Lazarenko Compiled by V.Tregubov Tehred M. Khodanich Proofreader N. Korol fi9.2 fie.Z