TY - GEN
T1 - A robust sensorless sliding mode observer with speed estimate for the flux magnitude of the induction motor drive
AU - Comanescu, Mihai
PY - 2015/8/31
Y1 - 2015/8/31
N2 - The paper presents a sensorless sliding mode observer for the flux magnitude of the induction motor (IM) drive. In order to implement a vector control scheme for the IM, the angle of the rotor flux and the flux magnitude are needed. To obtain them, it is typical to use a stationary frame flux observer - once the α, β flux components have been estimated, they are used to compute the flux angle and the flux magnitude. However, in Indirect Field Orientation methods, such an observer is not used; then, a separate flux magnitude estimator is needed. The paper presents a flux observer that is based on a modified IM model in the rotating reference frame. This is constructed on the skeleton of a sensored observer - in order to make it sensorless, the observer is fed with a speed estimate. The paper shows that, with a certain gain design, the resulting sensorless observer is insensitive to the potential input speed inaccuracy. The observer yields an accurate flux magnitude without measuring the speed.
AB - The paper presents a sensorless sliding mode observer for the flux magnitude of the induction motor (IM) drive. In order to implement a vector control scheme for the IM, the angle of the rotor flux and the flux magnitude are needed. To obtain them, it is typical to use a stationary frame flux observer - once the α, β flux components have been estimated, they are used to compute the flux angle and the flux magnitude. However, in Indirect Field Orientation methods, such an observer is not used; then, a separate flux magnitude estimator is needed. The paper presents a flux observer that is based on a modified IM model in the rotating reference frame. This is constructed on the skeleton of a sensored observer - in order to make it sensorless, the observer is fed with a speed estimate. The paper shows that, with a certain gain design, the resulting sensorless observer is insensitive to the potential input speed inaccuracy. The observer yields an accurate flux magnitude without measuring the speed.
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U2 - 10.1109/CPE.2015.7231077
DO - 10.1109/CPE.2015.7231077
M3 - Conference contribution
AN - SCOPUS:84959057214
T3 - Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015
SP - 224
EP - 229
BT - Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th International Conference on Compatibility and Power Electronics, CPE 2015
Y2 - 24 June 2015 through 26 June 2015
ER -