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A DC autotransformer design for medium and high voltage DC transmission systems
(
Institute of Electrical and Electronics Engineers Inc.
, 2018 , Conference Paper)
This paper studies a dc-dc converter topology dual to the ac autotransformer for medium and high voltage dc-dc conversion. Operation with trapezoidal modulation is analyzed where the dc autotransformer is built of ...
Hybrid and modular multilevel converter designs for isolated HVDC-DC converters
(
Institute of Electrical and Electronics Engineers Inc.
, 2018 , Article)
Efficient medium and high-voltage dc-dc conversion is critical for future dc grids. This paper proposes a hybrid multilevel dc-ac converter structure that is used as the kernel of dc-dc conversion systems. Operation of the ...