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Z-Source inverters, consisting of both inductors and capacitors as DC link components, provide unique boost capability in contrast to conventional inverters. The simple structure needs no additional switching elements and only small step-up chokes. Due to the oscillatory arrangement of both inductors and capacitors in the DC link, voltages and currents exhibit characteristical dynamic behavior especially...
This paper proposes a single-phase to three-phase converter. Such configuration is composed of two parallel single-phase rectifiers and a three-phase inverter operating at same frequency of the grid voltage. The proposed topology has advantages over the standard one due to: a) reduced power rating of the rectifier switches, which means switches operating at equivalent power rating; b) reduced costs...
This paper describes a novel hybrid modulation scheme for the operation of an isolated high-frequency and high-power direct-power-conversion (DPC) inverter. It enables: (a) removal of the dc-link filter evident in conventional inverters where the diode rectifier stage is followed by low-pass filter and a voltage-source inverter (VSI); (b) significant reduction in switching loss of the inverter by...
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