Capacitor voltage ripple and capacitance evaluation in a direct three-phase to single-phase ac/ac MMC

Abstract

published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User

Single-Stage MV-Connected Charger Using an Ac/Ac Modular Multilevel Converter

“…Ac/ac MMCs have been proposed for various applications . The MMC converts the MV grid to a medium-frequency sinusoidal voltage in [8,9,[11][12][13][14][15] and to a low-frequency sinusoidal voltage in [16,17]. In addition, in [18][19][20] and in [10,[21][22][23][24][25][26][27], the MMC converts a single-phase and a three-phase MV grid, respectively, into a square wave mediumfrequency voltage.…”

“…due to the ZOH. The submodule capacitor voltage ripple increases, mostly due to the increased grid and transformer current amplitudes [11].…”