Simultaneous rotor and stator resistance estimation of squirrel cage induction machine with a single extended kalman filter

Authors : Eşref Emre ÖZSOY, Metin GÖKAŞAN, Seta BOGOSYAN

Pages : 853-863

View : 18 | Download : 7

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Accurate knowledge of rotor and stator resistance variations in a squirrel-cage induction motor insert ignore into journalissuearticles values(SCIM); is crucial for the performance of sensorless control of SCIM over a wide range of speeds. This study seeks to address this issue with a single Extended Kalman Filter insert ignore into journalissuearticles values(EKF); based solution, which is also known to have accuracy limitations when a high number of parameters/states are estimated with a limited number of inputs. To this aim, different from the author`s previous approach in operating several EKFs in an alternating manner insert ignore into journalissuearticles values(the so-called braided EKF);, an 8th-order EKF is implemented in this study to test its performance for the simultaneous estimation of rotor and stator resistances with a single algorithm. Beyond the resistances, the EKF observer also estimates the load torque, rotor and stator fluxes and speed in the wide speed range insert ignore into journalissuearticles values(-nmax
Keywords : Extended Kalman filter EKF, , induction machine, sensorless control, rotor and stator resistance estimation