Electromagnetic wire for high-power wind driven generator

Abstract

The invention relates to an electromagnetic wire for a high-power wind driven generator. The electromagnetic wire comprises conductors and insulation layers attached at the outer portions of the conductors, the plurality of conductors are arranged and close to each other, the sections of the conductors arranged close to each other are rectangular, and the insulation layers comprise first insulation layers attached to the conductors and second insulation layers binding the conductors and attached to the outer sides of the first insulation layers. The electromagnetic wire for the high-power winddriven generator replaces a large-specification conductor with the plurality of small-specification conductors in the prior art, so that the overall strength and hardness of the electromagnetic wireare reduced, the electromagnetic wire is easy to machine and form, the drawn electromagnetic coil is regular and attractive in shape, the electromagnetic wire is not easy to damage in the forming process, the phenomenon that an insulating layer is lost due to deformation of the electromagnetic wire during processing is avoided, and a foundation is provided for thinning design of the insulating layers.

Description

technical field [0001] The invention belongs to the technical field of special winding wires, and in particular relates to an electromagnetic wire product suitable for high-power wind power generators. Background technique [0002] Electromagnetic wire products are mainly used in the stator coils of high-power 7MW and above direct-drive wind turbines. The size specifications of the electromagnetic wires used in the prior art are usually 4mm×16mm and above. When winding into shuttle coils, the size is usually 11 to 12 Turns of a single electromagnetic wire are stacked together. Since the larger the specification of a single electromagnetic wire, the higher its strength and hardness, it takes a lot of force to draw it into a frame-shaped coil. The requirements for drawing equipment are very high. At the same time, the shape of the drawn coil is not regular and perfect. It is difficult to correct the shape in the subsequent baking process, and the electromagnetic wire is easily...

AI Technical Summary

Problems solved by technology

[0002] Electromagnetic wire products are mainly used in the stator coils of high-power 7MW and above direct-drive wind turbines. The size specifications of the electromagnetic wires used in the prior art are usually 4mm×16mm and above. When winding into shuttle coils, the size is usually 11 to 12 Turns of a single electromagnetic wire are stacked together. Since the larger the specification of a single electromagnetic wire, the higher its strength and hardness, it takes a lot of force to draw it into a frame-shaped coil. The requirements for drawing equipment are very high. At the same time, the shape of the drawn coil is not regular and perfect. It is difficult to correct the shape in the subsequent baking process, and the electromagnetic wire is easily damaged during the forming process; The width is wider, and the copper wire is easily deformed at the R bend, which affects the insulation effect.

In addition, in the existing technology, in order to avoid the occurrence of insulation damage during processing, the insulation thickness is generally set at 0.70mm~0.75mm, and the insulation thickness is thicker, so that the motor slot fill rate is low and the efficiency is relatively low.

Images