Quasi Two-Level PWM Operation of an MMC Phase Leg With Reduced Module Capacitance | Zendy

Axel Mertens | Zendy; Jakub Kucka | Zendy

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Quasi Two-Level PWM Operation of an MMC Phase Leg With Reduced Module Capacitance

Author(s) -

Axel Mertens,

Jakub Kucka

Publication year - 2016

Publication title -

ieee transactions on power electronics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.159

H-Index - 266

eISSN - 1941-0107

pISSN - 0885-8993

DOI - 10.1109/tpel.2016.2537372

Subject(s) - power, energy and industry applications , aerospace , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , fields, waves and electromagnetics , general topics for engineers , nuclear engineering , signal processing and analysis , transportation

The modular multilevel converter offers benefits for medium and high voltage power conversion due to indirect series connection of devices. The drawback is a large amount of capacitance that has to be installed in each module, often prohibiting its use in cost sensitive applications. This letter proposes a new operation mode of modular multilevel topologies that allows reducing the capacitance by at least an order of magnitude. To achieve this, the multilevel operation is sacrificed, but many advantages of indirect series connection, such as proper voltage sharing, small voltage steps, limited voltage slopes, modularity, and scalability remain.

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