SENSORLESS INDUCTION MOTOR DRIVE WITH INDEPENDENT SPEED AND ROTORMAGNETIC FLUX CONTROL PART II - Simulation and Real Time Implementation

Stephen J. Dodds - Ján Vittek - Viktor A. Utkin

   A new control system for induction motor drives without shaft sensors was presented in Part I, see this Journal 49 (1998), NO. 7-8, 186-193. The simulations, which were done for ideal high gain and bang-bang control law for alpha_beta model of induction machine are presented in this (second) part of the paper. The simulations predict the system to be robust with respect to external load torques and realistic uncertainties in the motor parameters, including the rotor resistance. They show good correspondence with the realistic simulations of three-phase system, where achieved sampling frequency and final word-lengths were taken into account.

Keywords: induction motor, non-linear systems, feedback linearisation, sliding-mode control, variable-structure systems, hierarchical structures, observers

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