Title:	Control of AC/DC modular multilevel converter
Other Titles:	Regulace modulárního vícehladinového AC/DC měniče
Authors:	Blahník, Vojtěch Košan, Tomáš Peroutka, Zdeněk Talla, Jakub
Citation:	BLAHNÍK, V., KOŠAN, T., PEROUTKA, Z., TALLA, J. Control of AC/DC modular multilevel converter. Elektronika ir Elektrotechnika, 2018, roč. 24, č. 6, s. 11-14. ISSN 1392-1215.
Issue Date:	2018
Publisher:	Kauno Technologijos Universitetas
Document type:	článek article
URI:	2-s2.0-85058962104 http://hdl.handle.net/11025/31160
ISSN:	1392-1215
Keywords in different language:	AC/DC converter;adaptive resonant controller;modular multilevel converter
Abstract in different language:	In recent years, a special attention is paid to grid connected multilevel converters. These converters have specific use in industry in a high power, medium-voltage and high-voltage applications. This paper presents new control algorithm for single-phase AC/DC modular multilevel converter with target application as a traction converter connected directly to trolley wire. The proposed control strategy presents resonant controllers for converter current control with fundamental frequency adaptation. The fundamental frequency estimation and voltage synchronization is based on Second Order General Integrator Phase Locked Loop (SOGI-PLL). Furthermore, this paper presents robust voltage balancing technique for multilevel converter based on energy calculation of DC-link capacitances. It provides voltage balancing of multilevel converter cells with unbalanced load. The resulting control algorithm has low total harmonic distortion of converter trolley current even under unbalanced load condition. The algorithm was experimentally verified on the low voltage laboratory prototype with 3 H-bridge cells.
Rights:	Plný text je přístupný v rámci univerzity přihlášeným uživatelům. © Kauno Technologijos Universitetas
Appears in Collections:	Články / Articles (KEV) OBD

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