Slip ring structure for double-fed motor coiling type rotor

Abstract

The invention specifically discloses a slip ring structure for a double-fed motor coiling type rotor, for solving the problems of increased fault points, difficult control of assembling precision and enhanced operation difficulties by use of a conventional motor slip ring installation cooler and an encoder. The right end surface of a slip ring main body is connected with a cooling fan, an annular wheel hub is internally provided with a plurality of pairs of conductive poles which are fixed to the right end surface of the slip ring main body and are uniformly arranged by taking the axle center of the slip ring main body as a circle center, each pair of conductive poles are sleeved by a T-shaped conducting block, the inner sides of the T-shaped conducting blocks are provided with wiring holes, the inner sides of the conductive poles are provided with an encoder support connected with the right end surface of the slip ring main body, the encoder support comprises two discs arranged in parallel and an insulation spacer disposed between the two discs for separating the T-shaped conducting blocks, and the center of the disc at the right side of the encoder support is provided with an encoder connection shaft. By using the slip ring structure for the double-fed motor coiling type rotor, the heat dissipation problem of a slip ring is solved, the axial dimension is reduced, and the connection reliability and the operation manufacturability are guaranteed.

Description

technical field [0001] The invention relates to a slip ring structure for a motor, in particular to a slip ring structure for a wound rotor of a doubly-fed motor. Background technique [0002] In recent years, with the rapid development of wind power generation, the application of doubly-fed asynchronous wind generator as the main type of wind power generation is increasing day by day. Among them, the slip ring is the key component connecting the rotating part and the fixed part of the motor between the rotor winding and the frequency converter, and has an irreplaceable role. [0003] As a key component of the motor, the slip ring, due to the different models, needs to consider the commonality of the connection between the rotor winding cable and the slip ring, the installation of the encoder, and the arrangement of the cooling fan in the slip ring chamber. This requires the slip ring design process. In the case of ensuring insulation and conductivity, it has a reasonable s...

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a slip ring structure for a double-fed motor winding rotor in order to solve the problems that existing motor slip rings are equipped with coolers and encoders with more fault points, difficult control of assembly accuracy, and increased operational difficulty.

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