Electrical circuit with auxiliary voltage source for zero-voltage switching in DC-DC converter under all load conditions
Abstract
An electrical circuit comprising an n-port m-phase active bridge converter with n≥2 and m≥1, 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 n ports can convert a DC-voltage into an AC voltage, the n ports connected via an m-phase transformer or over m separate transformers each connected to each of the m phase legs of each of the n ports to transfer power between the ports, wherein an auxiliary circuit is connected to the transformers to convert a part of a transformer input voltage and energy via an auxiliary voltage source into a DC mid-point capacitor of a DC-link of at least one of the n-port m-phase active bridge converters to recharge the DC mid-point capacitor.
Inventors 2
- Rik W. De Doncker Aachen author as filed: De Doncker, Rik W.
- Johannes Voss Aachen author as filed: Voss, Johannes
Inventors are linked to an Aachen author when surname and first name match exactly one author.
Applicants
- Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen RWTH Aachen University
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