A Modular MMC Based DC-DC Converter with DC Fault Blocking Capability

Hofmann, Viktor; Hofstetter, Patrick

doi:10.1109/spec55080.2022.10058244

Cited by 1 publication

(1 citation statement)

References 15 publications

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“…3), 𝑖 𝑆𝐶 the current through the corresponding semiconductor, 𝑢 CE,sat the voltage drop over the semiconductor when turned on, and 𝜗 𝑆𝐶 the mean temperature of the semiconductor. The duty cycles 𝑑 𝑆𝐶 are calculated using the duty cycle of the full bridge Considering the different switching states of the full bridge, the duty cycles of the switches can be specified [14]:…”

Section: B M3cmentioning

confidence: 99%

Operation, Design, and Losses of the Modular Multilevel Matrix Converter in a Flywheel Energy Storage System

Kienast,

Bernet,

Sturm

2023

IEEE Open J. Ind. Applicat.

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This article presents an analysis of selected characteristics of the Modular Multilevel Matrix Converter (M3C) operating a doubly fed induction generator (DFIG) in a flywheel energy storage system (FESS). A detailed analysis of the necessary electrical input and output quantities, as well as the identification of required internal currents and voltages, leads to a newly introduced iterative design process for the converter. This process ultimately provides information on the required number of submodules and demonstrates the overload capability of the converter in reactive power operation. Also the short circuit current contribution of the system for this unique configuration of M3C and DFIG is investigated for the first time. Taking into account the unique operating characteristics of the M3C, a loss analysis of the converter and the machine is performed, and a loss-optimized distribution of reactive power between the machine and the converter is proposed. The study is conducted analytically and is validated by experimental results on a small-scale demonstrator.

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Section: B M3cmentioning

confidence: 99%