SU1443087A1 - Synchronous generator rotor - Google Patents

Abstract

The invention relates to electrical engineering, in particular to the field of electrical engineering, and can be used in electric valve generators used as sources of electrical power in automobiles. The aim of the invention is to simplify manufacturing technology and increase reliability. The rotor comprises a shaft 1, a pole system with an excitation winding 2, the terminals of which are connected to slip rings 4.3 connected to the brushes of a generator of negative and positive polarity 8.9, respectively. Shunt diodes connected to the field winding and made in the form of washers with central holes for shaft 1 are clamped between the contact rings 3.4 and the anode of the shunt diode is clamped to the contact ring 3 connected to the positive polarity generator 9 ring 4 connected to the brush of the negative polarity generator 8. The proposed constructive implementation of the rotor allows to increase the reliability of mounting and contact of the shunt diodes and contact rings, simplify the technology made and increase the reliability of the rotor as a whole. Zil. (L with

Description

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The invention relates to electrical engineering, in particular to electrical engineering, and can be used in electric valve generators used as sources of electrical power in automobiles.

The aim of the invention is to simplify the manufacturing technology and increase the reliability of the rotor.

, FIG. 1-3 shows embodiments of the proposed rotor, a slit.

The rotor contains a shaft 1, a pole system with a winding 2 of excitation, the outlets of which are connected by slip rings 3 and 4 placed on an insulating sleeve 5 pressed onto shaft 1. The shunt diode 6 (figure 1) is made in the form of a metal washer with a central hole on which a layer of semiconductor material 7 is deposited on one side. A diode is clamped between Contact Rings 3 and 4 so that its anode is pressed against a contact ring 4 connected to a brush of a negative polyrn generator 8 and the cathode is pressed to a contact ring 3 connected to brush generator 9 positive polarity.

The generator rotor (FNG. 2) can be made with several diodes b, connected in series (Fig. 2), as well as with a diode made in the form of a layer of semiconductor material 7 deposited on the contact ring 4 (Fig. 3).

The rotor operates as follows.

When the rotor rotates and feeds the winding 2 of the excitation with direct current in the winding of the core eroded on the stator of the synchronous generator (not shown), an alternating current is induced.

To regulate the voltage of autotractor synchronous generators, the KOTdpbix principle of operation is based on the right-handed discrete-action controllers, based on an abrupt change in the parameters and control structure in the excitation circuit. When switching the excitation winding 2, overvoltages arise which can lead to a failure in the operation of the voltage regulator and the generating set as a whole.

A shunt diode is used to reduce the overvoltage on the excitation winding 2 when it is turned off.

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(diodes) 6, connected in parallel to the excitation winding 2 so that when it is turned on due to the large amount of reverse resistance, the current passing through the shunt diode is very small.

When the excitation winding 2 is opened, the current generated by the self-induction EMF of the excitation winding 2 closes through the shunt diode 6 in the conductive direction, the resistance of which is small (along the circuit: excitation winding 2 - contact ring 4 - diode 6 - contact ring 3 - winding 2 excitement). Therefore, the overvoltage on the winding 2 at the time of shutdown is significantly reduced due to the fact that the magnetic energy stored in the magnetic circuit, when the circuit is opened, is spent not on the voltage, but on the heating of the excitation winding. In the rotor of a synchronous generator, the diodes are placed between contact rings, the inner end surfaces of the contact rings are machined and have a flat surface, and the insulating sleeve is pressed onto the shaft. The diodes are placed on an insulating sleeve without tension, the contact rings are pressed onto the insulating sleeve so as to ensure good contact between the electrodes of the shunt diodes and the contact rings.

Claims (1)

In the proposed rotor of the synchronous generator, the elements included in it, in particular the shunt diodes and contact rings, are securely fastened and contact, along with the simplicity of their implementation, which results in simplified manufacturing technology and increased reliability. Invention Formula A rotor of a synchronous generator containing a pole system and an excitation winding, the leads of which are connected to contact rings, connected to brushes of a generator of positive and negative polarity, and shunt diodes, one electrode of which — the cathode — is connected to a contact ring connected to a brush of a positive polarity generator and the other, the anode, with a slip ring connected to a brush of a negative polarity generator, slip rings and shunt diodes are placed on 31443087-1 shielding diodes on the generator shaft, characterized in that, in order to simplify the manufacturing technology, they are made in the form of washers with central holes for the insulating sleeve and are clamped between the contact rings. Shann reliability shunt diodes made in the form of washers with central apertures under the insulating sleeve and clamped between the contact rings. uz.2 Editor Oh, Golovach Compiled by T. Kalashnikova Tehred L. Serdyukova Proofreader N. Korol Order 6391/50 Circulation 666 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Subscription