Abstract
This paper presents a method for estimating the equivalent circuit parameters of three-phase induction motors by employing the extended Kalman filter. In this method, the stator currents and voltages, and rotor speed of the motor under an unspecified load and in unsaturated condition are considered. The rotor resistance, mutual inductance, and stator leakage inductance are estimated using the synchronous reference frame in the steady-state mode. Also, the rotor leakage inductance is estimated using the rotor reference frame in the transient mode. Experimental data are used to validate the analytical technique.
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