ADAPTIVE STATOR CURRENT REGULATION FOR IDENTIFICATION OF INDUCTION MOTOR PARAMETER

This paper develops and experimentally substantiates a new algorithm to identify unknown parameters of induction motors during self commissioning procedure. To guarantee asymptotic identification, we design adaptive stator current controller based on stator flux observer. Allowed current references guarantee local exponential identification of three induction motor parameters as well as estimation of the stator fluxes in both motionless and rotating rotor operation. Performed experiments demonstrate that the proposed scheme provides identification and estimation accuracy with fast asymptotic convergence of errors to zero. Our procedure compliments the existing industrial control schemes, and, consistent with vector controls including sensorless algorithms.