Sensorless Control of Induction Motor: Design and Stability Analysis

Adaptive observers used in sensorless control of induction motors suffer from instability especally in regenerating mode. In this paper, an optimal feed back gain design is proposed, it can reduce the instability region in the torque speed plane .





References:
[1] C. Chaigne, E. Etien, S. Cauet, L. Rambault,Commande vectorielle
sans capteur des machines asynchrones. ,Hermes science,
Lavoisier, 2005.
[2] M. Hinkkanen, Stabilisation of Regenerating-Mode Operation in
Sensorless Induction Motor Drives by Full-Order Flux Observer
Design,IEEE Transactions on Industrial Electronics,vol. 51, no 6
2004.
[3] H. Kubota and K. Matsuse, DSP-Based Speed Adaptive Flux
Observer of Induction Motor, IEEE Transactions on industry
Applications,vol. 29, no 2,1993.
[4] H. Kubota and I. Sato, Regeneratin-Mode Low-Speed Operation
of Sensorless Induction Motor Drive With Adaptive Observer,
IEEE Transactions on industry Applications,vol. 38, no 4,2002.
[5] F. Morand, Technique s d-Obsrvation sans capteur de Vitesse
en vue de la Commande des Machines Asynchrone, Phd Thesis
'Institut National des Sciences appliqu'ees de Lyon, , 2005.
[6] M. Rashed and F. Stronach and P. Vas, A stable MRAS-based
sensorless vector control induction motor drive at low speeds, in
Conf. Rec. IEEE IEMDC, 2003.
[7] S. Suwankawin and S. Sangwongwanich, A Speed-Sensorless IM
Drive With Decoupling Control and Stability Analysis of Speed
Estimation, IEEE Transactions on industrial electronics,vol. 49,
no 2, 2002.