Fast compensation of DC bus voltage drops using modular multilevel converters | Zendy

Stark Christoph | Zendy; Danowski Dierk | Zendy; Marqués JoseLuis | Zendy; Hillermeier Claus | Zendy

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Fast compensation of DC bus voltage drops using modular multilevel converters

Author(s) -

Stark Christoph,

Danowski Dierk,

Marqués JoseLuis,

Hillermeier Claus

Publication year - 2019

Publication title -

the journal of engineering

Language(s) - English

Resource type - Journals

ISSN - 2051-3305

DOI - 10.1049/joe.2018.8220

Subject(s) - converters , modular design , compensation (psychology) , voltage drop , grid , voltage , computer science , control theory (sociology) , millisecond , electrical engineering , current (fluid) , direct current , electronic engineering , engineering , control (management) , physics , mathematics , psychology , geometry , artificial intelligence , psychoanalysis , operating system , astronomy

For a DC grid using modular multi‐level converters (MMCs) fast control of the DC bus is an important requirement. A control design is presented where a sudden DC voltage drop is compensated without any influence on the AC side. Using a suitable pattern in the MMC internal circular currents, the DC current can be adjusted and the MMC can be brought to a new steady state with symmetrised arm energies within few milliseconds.

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