Turn-to-turn insulation structure of ultra-thin 10kV high-voltage motor and manufacturing method thereof

Abstract

The invention relates to a turn-to-turn insulation structure of an ultra-thin 10kV high-voltage motor and a manufacturing method thereof. The turn-to-turn insulation structure comprises a wire insulating layer. The wire insulating layer comprises three layers of polyester film dry mica tapes arranged in a lapped mode. All the three layers of polyester film dry mica tapes are lapped in a gap wrapped mode. The size of each gap of the first layer, the size of each gap of the second layer and the size of each gap of the third layer are X1, X2 and X3 respectively, the X1 is larger than 0 mm and smaller than or equal to 0.1mm, the X2 is larger than 0 mm and smaller than or equal to 0.2mm, and the X3 is larger than 0mm and smaller than or equal to 0.3mm. The gaps of every two adjacent layers are arranged in an evenly-staggered mode, the distance between the gaps of every two adjacent layers is 1 / 3 of the width of the polyester film dry mica tapes, and the insulation thickness of double edges of the turn-to-turn insulation structure is 0.40-0.46mm. According to the turn-to-turn insulation structure, under the premise that insulation performance is guaranteed, the insulation thickness of the double edges of the turn-to-turn insulation structure is reduced to a value below 0.46mm, and ultra thin of the turn-to-turn insulation structure is achieved.

Description

technical field [0001] The invention belongs to the technical field of motor insulation, and in particular relates to a turn-to-turn insulation structure of a 10kV class motor and a manufacturing method thereof. Background technique [0002] High power and small size are the development direction in the field of high voltage motors. Reducing the size of the motor under the same power can not only save manufacturing costs, improve the thermal performance of the motor, and reduce the temperature rise of the motor; it can also reduce the weight of the motor, which is convenient for transportation, use and installation. [0003] Under the same power, reducing the size of the motor, reducing the insulation size (including inter-turn insulation and main insulation) and increasing the slot fullness are the key. The reduction of insulation size is a pair of contradictions with insulation quality and insulation reliability. Only a scientific and reasonable insulation structure can ...

AI Technical Summary

Problems solved by technology

And as mentioned above, the ordinary flat-wrap method is not conducive to the thinning of the inter-turn insulation because of the small overlap in practice. Therefore, the structure of the reference file cannot really realize the ultra-thin inter-turn insulation

[0005] To sum up, the existing inter-turn insulation structure of 10kV high-voltage motors cannot truly achieve thickness reduction under the premise of ensuring insulation performance.

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