TY - GEN
T1 - Comparative study of an adaptive sliding observer and an EKF for speed sensor-less DTC IPM synchronous motor drives
AU - Xu, Z.
AU - Rahman, F.
AU - Xu, Dianguo
PY - 2007
Y1 - 2007
N2 - The accuracy of the open-loop estimation of the stator flux and speed for Direct Torque Controlled (DTC) IPM synchronous motor drives drops as the mechanical speed reduces. At lower speed, inaccurately estimated stator flux and stator resistance mismatch have significant influence on the steady state and transient performance of the drive system. The robustness against parameter detuning and signal noises can be improved by deploying closed-observers to estimate the stator flux and rotor speed. This paper presents a comparative analysis of two stator flux+speed observers for DTC IPM motor drives: the adaptive sliding observer and the Extended Kaiman Filter (EKF). The experimental comparison evaluation of the adaptive sliding observer and the EKF regards steady state and dynamic performance, robustness against parameter uncertainties, stability and computational complexity. Recommendations for observer selection and the effectiveness of the various schemes are concluded.
AB - The accuracy of the open-loop estimation of the stator flux and speed for Direct Torque Controlled (DTC) IPM synchronous motor drives drops as the mechanical speed reduces. At lower speed, inaccurately estimated stator flux and stator resistance mismatch have significant influence on the steady state and transient performance of the drive system. The robustness against parameter detuning and signal noises can be improved by deploying closed-observers to estimate the stator flux and rotor speed. This paper presents a comparative analysis of two stator flux+speed observers for DTC IPM motor drives: the adaptive sliding observer and the Extended Kaiman Filter (EKF). The experimental comparison evaluation of the adaptive sliding observer and the EKF regards steady state and dynamic performance, robustness against parameter uncertainties, stability and computational complexity. Recommendations for observer selection and the effectiveness of the various schemes are concluded.
UR - http://www.scopus.com/inward/record.url?scp=48349140163&partnerID=8YFLogxK
U2 - 10.1109/PESC.2007.4342423
DO - 10.1109/PESC.2007.4342423
M3 - Conference contribution
AN - SCOPUS:48349140163
SN - 1424406552
SN - 9781424406555
T3 - PESC Record - IEEE Annual Power Electronics Specialists Conference
SP - 2586
EP - 2592
BT - PESC 07 - IEEE 38th Annual Power Electronics Specialists Conference
T2 - PESC 07 - IEEE 38th Annual Power Electronics Specialists Conference
Y2 - 17 June 2007 through 21 June 2007
ER -