Turn-to-turn insulation single-turn coil and rotor winding

Abstract

The invention provides a turn-to-turn insulation single-turn coil and a rotor winding, and belongs to the technical field of motor manufacturing. The turn-to-turn insulation single-turn coil includesa copper bus, an insulating plate and an adhesive tape. The insulating plate is laminated on the wide surface of the copper bus, the adhesive tape is wrapped around the outer periphery of the laminated structure composed of the insulating plate and the copper bus, and the insulating plate is provided with a first sliding layer, wherein the first sliding layer is coated on the insulating plate forreducing the friction between the insulating plate and the copper bus. The objective of the invention to provide the turn-to-turn insulation single-turn coil and the rotor winding, which are capable of generating an insulating effect through the insulating plate. Meanwhile, the first sliding layer on the surface of the insulating plate is used for reducing the friction between the insulating plateand the copper bus. Meanwhile, the adhesive tape is used for fixing the insulating plate and the copper bus, so as to reduce the damage of the insulation structure caused by the friction caused by the friction between the insulating plate and the copper bus during normal use, thereby reducing the coil short circuit phenomena of the rotor winding due to damage of the insulation structure.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a rotor coil inter-turn insulation structure and the rotor coil. Background technique [0002] Our country has a large population and a vast territory. With the sustained and stable growth of the national economy, our country's demand for electricity is also increasing. At present, the large generators used in power plants mainly include turbo generators and hydro generators. Among them, the generator rotor coil turns should be insulated, and the insulation of the generator rotor coil has a great influence on the reliability of the generator operation. Inter-turn insulation damage will lead to inter-turn short-circuit faults, which will further reduce the reactive power of the generator and increase the vibration of the bearing, which poses a great threat to the stable operation of the power generation and the unit. [0003] At present, the inter-turn insulation str...

AI Technical Summary

Problems solved by technology

To a certain extent, this structure overcomes the shortcoming of the exposed narrow surface of the copper mother wire in the pad-type structure. During the operation of the rotor, there will still be a large shear stress. Compared with the previous inter-turn insulation structure, this inter-turn structure increases the relative friction between the copper busbar and the inter-turn insulation, and it is easier to wear the inter-turn pad of the rotor coil. strip

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