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

Authors

EŞREF EMRE ÖZSOY
METİN GÖKAŞAN
OVSANNA SETA ESTRADA

DOI

10.3906/elk-0906-50

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 8^{th}-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 (-n_{max}

Keywords

Extended Kalman filter (EKF), induction machine, sensorless control, rotor and stator resistance estimation

First Page

853

Last Page

864

Recommended Citation

ÖZSOY, EŞREF EMRE; GÖKAŞAN, METİN; and ESTRADA, OVSANNA SETA (2010) "Simultaneous rotor and stator resistance estimation of squirrel cage induction machine with a single extended kalman filter," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 18: No. 5, Article 9. https://doi.org/10.3906/elk-0906-50
Available at: https://journals.tubitak.gov.tr/elektrik/vol18/iss5/9