Closed-loop control of an integrated dual-inverter to drive two permanent magnet motors independently is presented and evaluated experimentally. By utilizing the neutral point of the three-phase main motor, only two inverter legs are needed for the two-phase auxiliary motor. A modified field oriented control scheme for this integrated inverter was introduced and employed in real-time control. Experimental results show that the inverter is able to control two drives independently. An integrated, component-count-reduced drive is achieved.
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Tang et al. (2008) studied this question.
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