The Rotor Speed-Adjusted Performance Study Of The Wound Rotor Asynchronous Motor

The wound rotor asynchronous motor is widely used in the places overloaded starting and speed, whose power supplied by the stator side, and the reliability and economy of whose frequency conversion is worse, In view of this situation, the program that the power of the winding type asynchronous motor supplied by the rotor side is Proposed in the paper, Application of existing low voltage general-purpose vector control frequency conversion technology to realize high pressure of step less speed of the motor.The present application in motor frequency control part of the inverter type and main solution are analyzed in this paper; The electromagnetic torque of the wound rotor asynchronous motor rotor is analyzed, calculation formula and the mechanical characteristic curve is drawn when the power is supplied by the rotor, and makes a comparative analysis with the power is supplied by the stator; The operation of the wound rotor asynchronous motor rotor is analyzed when the power is supplied by the rotor side, and the operation equation of under three-phase reference frame, two-phase stationary frame and two phase rotation coordinate is built up;Vector frequency conversion control is deduced based on the equations, the structure of the vector frequency conversion control system is set up, the vector control system analyzed and designed according to asynchronous motor stator field-oriented, the simulation research of the rotor frequency control base on matlab/simulink, the necessary simulation waveform is given, the effectiveness of the normal work of the system is verified through the analysis.The temperature of the motor and the effect of the motor parameters is further analyzed and researched when the power is supplied by the rotor side on the basis of this paper. This scheme can be used in practice, and to verify the effect.