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Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China
Nowadays motor vector control is applied widely, but in fact motor parameter which has much effect on vector will change at any moment, which affects precision of vector control. A new method is proposed, rotor time constant can be estimated by using torque and flux current and the change of stator and rotor flux angle. Simulation show the method can compute instantaneous parameters and improve precision of vector control.
Keywords:rotor time constant;vector control;stator and rotor flux angle