Random winding of high voltage motor
A high-voltage and winding technology, which is applied in the direction of electric components, manufacturing motor generators, and the shape/style/structure of winding conductors, can solve the problems of increasing the shape of the motor, and achieve volume reduction, good effect, and reasonable structure. Effect
Inactive Publication Date: 2012-12-05
FUSHUN COAL MINE MOTOR MFG
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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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[0015] The present invention will be described in detail below with reference to the drawings;
[0016] In terms of electromagnetic scheme design: On the one hand, we changed the embedded wire winding to the scattered embedded wire winding, such as figure 1 As shown in the structure, the original rectangular slot 1 is changed to pear-shaped slot 2 to increase the cross-sectional area of the stator teeth and reduce the magnetic flux density of the stator teeth; image 3 The double squirrel cage rotor structure shown is changed to Figure 5 The single squirrel cage rotor structure shown, the rotor punching slot shape is also determined by Figure 4 The slot shape of the double squirrel cage rotor punching piece shown is changed to Image 6 The shown single squirrel cage rotor punching slot structure, or other single squirrel cage structures, such as convex shape, etc., thereby greatly reducing the magnetic flux density of the rotor teeth and yoke, in addition, the convex slot can e...
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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 with scattered windings. Background technique [0002] Motors with a rated voltage exceeding 3kV are called high-voltage motors. Recently, many coal mine equipment has gradually increased from 660V and 1140V to 3.3kV. As the rated voltage rises, it is necessary to increase the insulation thickness of the stator windings to satisfy the insulation between winding turns and ground. The requirements of the test have increased the size of the motor, which cannot meet the user's size requirements. Therefore, it is necessary to optimize the design of the electromagnetic calculation and insulation structure of the motor. [0003] For the motors used in coal mines, the overall dimensions of the unit are determined according to the thickness of the underground coal seam. The overall dimensions of the motor are limited by the assembly space of the unit; on the other hand, the ...
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IPC IPC(8): H02K3/12H02K3/34H02K15/12H02K15/085C08L79/08
Inventor 肖红伞庆相李卫东
Owner FUSHUN COAL MINE MOTOR MFG