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Latin American applied research

versión impresa ISSN 0327-0793


ROMERO, M.; BRASLAVSKY, J. H.  y  VALLA, M. I.. Ripple reduction in direct torque and flux control of induction motors via sliding modes. Lat. Am. appl. res. [online]. 2007, vol.37, n.4, pp.289-297. ISSN 0327-0793.

This paper presents a torque ripple reduction approach to direct torque and flux control (DTFC) of an induction motor using a sliding-mode control (SMC) technique. A distinctive feature of the approach is that, by appropriately parametrizing and implementing the sliding-mode controller, the discontinuous nature of the actuator may be directly incorporated to the design process. The present paper shows how to design the DC-bus value of the inverter to guarantee reachability of rated values, and proposes two strategies for reduction of steady-state torque ripple in the implementation of the SMC. Experimental results confirm the characteristics of the proposed control strategies and indicate that they are specially effective at low speed of operation.

Palabras clave : Torque Control; Sliding-Mode Control; Induction Motors; Electrical Machines.

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