Digital field-oriented control for dual three-phase induction motor drives |
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Authors: | Bojoi R Lazzari M Profumo F Tenconi A |
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Affiliation: | Dipt. de Ingegneria Elettrica Industriale, Politeenico di Torino, Turin, Italy; |
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Abstract: | A direct rotor-field-oriented control of a dual-three phase induction motor drive is described in this paper. The induction machine has two sets of stator three-phase windings spatially shifted by 30 electrical degrees. The stator windings are fed by a current-controlled pulsewidth-modulation (PWM) six-phase voltage-source inverter. Three key issues are discussed: (1) the machine dynamic model is based on the vector space decomposition theory; (2) the PWM strategy uses the double zero-sequence injection modulation technique which gives good results with low computational and hardware requirements; and (3) to eliminate the inherent asymmetries of the drive power section, a new current control scheme is proposed. Experimental results are presented for a 10-kW dual three-phase induction motor drive prototype. |
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