Abstract
This paper presents a novel control approach of a current source inverter drive system using an induction motor. A variant of hysteresis-band current control adapted to the current source inverter circuit topology is proposed. The current control strategy is based on the correction of the two out of three larger errors of the instantaneous real currents of motor with respect to their references. The well known GTO current source inverter in which an auxiliary branch of inverter is added in order to ensure the continuity of dc link current in special conditions The indirect rotor flux-orientated vector control of induction motor gives the reference motor's currents. In order to suppress the inherent instability of current fed induction motor, a coefficient of derivative of real motor's currents is added to the reference ones. The simulation results of steady state and dynamic operations of the novel control asynchronous drive are shown and the advantages of this technique are discussed.
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