TY - GEN

T1 - Design of a MRAS-type sliding mode observer for estimation of the rotor time constant of the induction motor

AU - Comanescu, Mihai

N1 - Publisher Copyright:
© 2016 IEEE.

PY - 2016/12/21

Y1 - 2016/12/21

N2 - The paper discusses the problem of estimating the rotor time constant of the induction motor. Estimation is done considering that the stationary frame fluxes are available. The fluxes are obtained using a voltage model observer - the paper assumes that the stator resistance and the magnetizing inductance of the motor are known, therefore, the fluxes are accurate. The inverse of the rotor time constant is estimated with a MRAS-type sliding mode observer that uses the incoming fluxes to construct the feedback terms; it also uses a speed signal at the input. Since the speed may be inaccurate, this affects the estimation process. The paper shows that the error in the estimated rotor time constant can be reduced by operating the induction motor with a low ratio of id to iq. The estimation method involves only simple mathematics and is not computationally intensive. The theoretical claims of the paper are supported with simulations and experiments.

AB - The paper discusses the problem of estimating the rotor time constant of the induction motor. Estimation is done considering that the stationary frame fluxes are available. The fluxes are obtained using a voltage model observer - the paper assumes that the stator resistance and the magnetizing inductance of the motor are known, therefore, the fluxes are accurate. The inverse of the rotor time constant is estimated with a MRAS-type sliding mode observer that uses the incoming fluxes to construct the feedback terms; it also uses a speed signal at the input. Since the speed may be inaccurate, this affects the estimation process. The paper shows that the error in the estimated rotor time constant can be reduced by operating the induction motor with a low ratio of id to iq. The estimation method involves only simple mathematics and is not computationally intensive. The theoretical claims of the paper are supported with simulations and experiments.

UR - http://www.scopus.com/inward/record.url?scp=85010028203&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85010028203&partnerID=8YFLogxK

U2 - 10.1109/IECON.2016.7793350

DO - 10.1109/IECON.2016.7793350

M3 - Conference contribution

AN - SCOPUS:85010028203

T3 - IECON Proceedings (Industrial Electronics Conference)

SP - 2748

EP - 2753

BT - Proceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society

PB - IEEE Computer Society

T2 - 42nd Conference of the Industrial Electronics Society, IECON 2016

Y2 - 24 October 2016 through 27 October 2016

ER -