Title :
Resonant converter, DC power supply, Soft switching, ZVS converters novel adaptive flux observer for wide speed range sensorless control of induction motor
Author :
Adamowicz, Marek ; Rrzeminski, Z.
Author_Institution :
Gdynia Marine Univ., Gdynia
Abstract :
A new adaptive flux observer of induction motor is presented in the paper. The Lyapunov theory is utilized for derivation of the adaptation law of rotor flux angular speed, which acts as unknown parameter in an augmented induction motor model. In the field weakening region, where stray fluxes are comparable with rotor flux magnitude, the air-gap flux stabilization is proposed. An air-gap flux multiscalar model is derived for stator current and air-gap flux vectors and the multiscalar model based nonlinear control of induction motor taking advantages of air-gap flux model is applied. The performance of the proposed sensorless control algorithm is verified experimentally on a DSP-based drive system.
Keywords :
Lyapunov methods; drives; induction motors; machine control; nonlinear control systems; rotors; stators; DSP-based drive system; Lyapunov theory; adaptive flux observer; air-gap flux stabilization; induction motor; nonlinear control; rotor flux angular speed; rotor flux magnitude; stator current; wide speed range sensorless control; Adaptive control; Air gaps; Induction motors; Power supplies; Programmable control; Resonance; Rotors; Sensorless control; Switching converters; Zero voltage switching; Estimation technique; High speed drive; Induction motor; Non-linear control; Sensorless control;
Conference_Titel :
Power Electronics and Applications, 2007 European Conference on
Conference_Location :
Aalborg
Print_ISBN :
978-92-75815-10-8
Electronic_ISBN :
978-92-75815-10-8
DOI :
10.1109/EPE.2007.4417322
