Research on nonuniform voltage distribution in winding turns of motor driven by high frequency pulse

This paper analyzes the electromagnetism in the stator slots of the motor using the software ANSYS for finite element analysis (FKA). A model of single slot is established and the value of the distributed inductance and the distributed capacitance of each turn in the slot can be calculated. After analyzing how the distributed parameters of the windings change with the different location of each turn, the paper probes into the voltage distribution regularity in the winding turns of motor driven by high frequency pulse. The result indicates that the chief reason of voltage nonuniform distribution in the winding turns of motor is high dv/dt; Also, the voltage stress on the first several turns of terminal coil is the most in the entire turns of winding when overvoltage occurs.