Power balancing of a multilevel converter with two insulated supplies for three-phase six-wire loads

A multilevel converter topology feeding three-phase open-end winding loads is considered in this paper. The scheme is based on two insulated DC supplies, each one feeding a standard two-level, three-phase inverter. A three-phase, six wires load is connected across the output terminals. A new modulation technique able to regulate the sharing of the output power between the two DC sources within each switching cycle is presented. The performance of the whole system has been verified by numerical simulations

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