| Motor designing and manufacturing technology has become more mature from the earlynineteenth century as an important component of the power conversion or transmission. In therecent years, AC variable-frequency motor has been started to be widely used in variousindustrial fields with promote of national high efficiency and energy saving policy.Firstly, this paper focuses on the present study of mine variable–frequency motor researchdomestic and aboard. And then the designing methods of traditional asynchronous motor areanalyzed. A new method of mine variable-frequency motor designing is deduced. In the meantime, mine variable-frequency harmonic, torque characteristics, mechanical properties and lossare analyzed, and the harmonic analysis model of mine variable frequency motor is got.Secondly, the specific analysis and design for15kW flameproof frequency conversion isgiven, and then the specific analysis and design of frequency conversion motor’s insulationstructure is got. The specific analysis design of insulation structure, cooling structure and thestructure of the blasting is also got. Finally, the designing result of15kW flameproofvariable-frequency traction motor is got.Finally, this paper gives the analysis on magnetic field for15kW flameproofvariable-frequency conversion traction motor, showing the torque performance ofvariable-frequency motor, winding current change with the change of time and distribution ofmagnetic field. |
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