Random winding of high voltage motor

Abstract

The invention relates to the field of motor manufacturing, and discloses a random winding of a high voltage motor. A high voltage design with requirements on small motor volume and high power is realized. A stator slot is pear-shaped. A rotor adopts a single-squirrel cage slot. Rotor conducting bars adopt single-squirrel cage rectangular and convex drawn copper conducting bars. A stator random winding insulating process for the motors of 20kW and the stator random winding insulating process for the motors of 20kW and above are adopted. The random winding of the high voltage motor has the advantages of: 1, relatively more remarkably reducing the volume of the motor and achieving good effects by improving an insulating structure of the high voltage motor with the small volume and relativelyhigher power; 2, making the electromagnetic scheme design and structure of the motor more rational and simpler and functioning in optimizing the design; and 3, reducing a plurality of steps of molding the winding and saving raw materials. Therefore, the random winding of the high voltage motor has relatively higher economy.

Description

technical field [0001] The invention relates to the field of motor manufacturing, and discloses a high-voltage motor loosely embedded winding. Background technique [0002] Motors with a rated voltage exceeding 3kV are called high-voltage motors. Recently, many coal mining equipment have gradually increased from 660V and 1140V to 3.3kV. The increase in rated voltage will inevitably increase the insulation thickness of the stator winding to meet the insulation between turns and ground. The requirements of the test, so that the size of the motor increases, so that it cannot meet the size requirements of the user. Therefore, it is necessary to optimize the design of the electromagnetic calculation and insulation structure of the motor. [0003] For motors used in coal mines, the overall size of the unit is determined according to the thickness of the underground coal seam. The outer size of the motor is limited by the assembly space of the unit; on the other hand, the rated po...

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Problems solved by technology

[0003] For motors used in coal mines, the overall size of the unit is determined according to the thickness of the underground coal seam. The outer size of the motor is limited by the assembly space of the unit; on the other hand, the rated power of the motor continues to increase, and the rated voltage also increases to 3300 volts. Check the relevant countries And the motor stator winding insulation structure stipulated in the industry standard, 3300 volts must use the formed winding embedded wire, the bevel at the end of the formed winding is longer, so that the shape of the motor is enlarged

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