- Turkish Journal of Electrical Engineering and Computer Science
- Vol: 18 Issue: 5
- Simultaneous rotor and stator resistance estimation of squirrel cage induction machine with a single...
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 : 7 | Download : 4
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :Accurate knowledge of rotor and stator resistance variations in a squirrel-cage induction motor (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 (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 (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 (-nmaxKeywords : Extended Kalman filter (EKF), induction machine, sensorless control, rotor and stator resistance estimation