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Automatika : journal for control, measurement, electronics, computing and communications, Vol.51 No.1 March 2010. -

Induction motor speed sensorless torque control, which allows operation at low and zero speed, optimizing both torque response and efficiency, is proposed. The control is quite different than the conventional field-oriented or direct torque controls. A new discontinuous stator current FPGA based controller and rotor flux observer based on sliding mode and Lyapunov theory are developed, analyzed and experimentally verified. A smooth transition into the field weakening region and the full utilization of the inverter current and voltage capability are possible. The reference tracking performance of speed and rotor flux is demonstrated in terms of transient characteristics by experimental results.

Discrete-event driven system; FPGA; Induction motors; Sliding mode control; Torque control



Autor: Karel Jezernik - ; Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia Asif Šabanov

Fuente: http://hrcak.srce.hr/



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