Three-level inverter drive with sliding mode control

The aim of this paper to spread the sliding mode control design technique on the new class of the AC drives: an induction motor(1M) fed by three-level voltage-source inverter (3LVSI). A comprehensive investigation of possible drive "variable structures" was carried out. Based on this analysis an original two-step design procedure allows using the "classical" result of sliding-mode theory for the real variable structure system with more then 2m variable structures (m is the control space order). The based on this design procedure original control algorithm that includes a choice condition for 3LVSI input DC voltage and a switch table for the 3LVSI semiconductor switches is designed. The performance of the considered control structure has been examined by simulation.

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