Abstract

Based on the analysis of the mathematical model of the three-phase asynchronous motor and sine pulse width modulation principle, According to the theory of asynchronous motors vector control , software is building simulation model of asynchronous motors vector control system according to the rotor flux in Matlab/Simulink, analysis dynamic characteristics of rotational speed, torque and stator current ,provided the simulation results of the control system, verify the vector control is effective and feasible.

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