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Recently, the medium frequency power electronic traction transformer (PETT) has received increased attention in the rail transit applications due to its small size, light weight, more space availability for passengers, multiple interfaces and other additional functionalities. However, the switching frequency is limited by the thermal tolerance of semiconductors which deteriorate as the switching frequency...
Since its conception, the quasi-Z-source inverter (qZSI) has been extensively studied, especially in renewable energy applications fields due to its ability to withstand shoot-through and provide continuous current. However, research thus far has only explored symmetric qZSI/ZSI impedance network with large inductances and capacitances. By utilizing next-gen wideband-gap devices at high-switching...
Distributed-logic-control is an independent parallel inverter control technique. The strategy to restrain circulating currents based on distributed-logical-control is researched in the paper. The conventional method by power regulation to restrain the circulating current is affected by the parallel impedance and has such disadvantages in the response speed and harmonic component of circulating current...
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