A Model-Free Capacitor Voltage Balancing Method for Multilevel DAB Converters
نویسندگان
چکیده
Capacitor voltage balancing is of importance in the neutral-point-clamped based dual-active-bridge converters. Most traditional methods adopt transformer current models process, as direction neutral-point affected by polarity. However, this approach requires heavy and repetitive offline precalculation for polarity under various operating modes, thus, leading to complicated implementation. To overcome this, a model-free scheme on fixed-switching-state method proposed letter. Two switching states are employed during process method, where independent Hence, implementation can be simplified without Furthermore, feature more robust against parameter variations or mode changes. Experimental tests performed, which verify that achieve terms easy fast dynamics.
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ژورنال
عنوان ژورنال: IEEE Transactions on Power Electronics
سال: 2023
ISSN: ['1941-0107', '0885-8993']
DOI: https://doi.org/10.1109/tpel.2022.3203746