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AssigneeRheinisch-Westfälische Technische Hochschule (RWTH) Aachen
InventorRik W. De Doncker
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An electrical circuit comprising an n-port m-phase active bridge converter with n≥2 and m≥3, where each port can be operated as an input or an output port, wherein each of the n ports has m phase legs with multiple active switches with parallel connected snubber or resonant capacitors, whereby the ports can convert a DC-voltage into an AC voltage and vice versa, whereby the ports are connected via a m-phase transformer or over m separate transformers each connected to each of the m phase legs of each of the m ports to transfer power between the ports, wherein an auxiliary circuit is connected to a star point of the transformers to feedback a fraction of a transformer input voltage and energy into a DC mid-point capacitor of a DC-link of at least one of the n-port m-phase active bridge converters to charge the DC mid-point capacitor.
An electrical circuit for zero-voltage switching of a DC-DC converter under all load conditions, comprising:
A method of operating an electrical circuit comprising an n-port m-phase active bridge converter with n≥2 and m≥3, where each of n ports can be operated as an input or an output port, wherein each of the n ports has m phase legs with multiple active switches with parallel connected snubber capacitors, whereby the n ports can convert a DC-voltage into an AC voltage and vice versa, whereby the n ports are connected via an m-phase transformer and are each connected to each of the m phase legs of each of the n ports to transfer power between the n ports, the method comprising:
Dependencies are inferred from the claim text.