MMC Based Hybrid Switched Capacitor DC-DC Converter.pdf (13.45 MB)
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posted on 2022-02-11, 17:59 authored by Yales Rômulo De NovaesYales Rômulo De Novaes, Marcus Vieira SoaresAbstract—Aiming to address the growth and the integration of renewable sources and electronic loads, different types of dc-dc topologies with specific features have been proposed, going from medium frequency isolated Modular Multilevel Converter to Switched Capacitor and Hybrid Switched Capacitor topologies. In this paper, a bidirectional Modular Multilevel Converter based Hybrid Switched Capacitor dc-dc converter is presented, featuring transformerless structure, automatic total arm voltages clamping/balancing, voltage static gain independent of the submodules quantity and efficiency with reduced duty cycle influence. The topology operates with a Quasi-Two-Level modulation, which provides passive components volume/weight reduction, a degree of freedom regarding the dv/dt applied on the magnetic windings and basis to perform the submodule capacitor voltages equalization within each arm. The topology operating principles are approached by an average value static analysis while an instant value static analysis is used to estimate the operating current spike worst case. A 1.17 kW, 350/200 V laboratory scale prototype using IGBTs is implemented to experimentally confirm the theoretical approaches.
Funding
Fapesc
CAPES PAEX
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Email Address of Submitting Author
yales.novaes@udesc.brORCID of Submitting Author
0000-0002-0958-6891Submitting Author's Institution
UDESC - Santa Catarina State UniversitySubmitting Author's Country
- Brazil