Operation of Modular Multilevel Converters Under Grid Asymmetries

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In two-stage solid-state transformers (SSTs) equipped with LLC DC/DC converters for galvanic isolation, fixed-frequency open-loop operation of LLC stages has been a straightforward and prevailing design choice. Meanwhile, with a closed-loop-operated LLC co ...

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Operation of Modular Multilevel Converters Under Grid Asymmetries

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