A master thesis from Aalborg University
Control and modulation strategies for MMC - based HVDC
Author(s)
Term
4. term
Education
Publication year
2015
Submitted on
2015-05-27
Pages
92 pages
Abstract
MMC is a new topology that has revolutionized the VSCHVDC for electrical transmission over long distances and interconnecting asynchronous AC grids. Being a very complex and distributed plant, the modulation become more challenging. The purpose of this thesis is to analyse the existing modulation techniques and propose improved solutions that are able to: improve the capacitor voltage balancing, reduce the switching frequency and uniformly distribute the losses among power switches. A comparison of different modulation techniques has been carried out for several converter power ratings, a small scale prototype and a HVDC system, in order to compare their performance. Finally a small scale prototype has been designed and built in order to validate the simulation results.
Documents
Colophon: This page is part of the AAU Student Projects portal, which is run by Aalborg University. Here, you can find and download publicly available bachelor's theses and master's projects from across the university dating from 2008 onwards. Student projects from before 2008 are available in printed form at Aalborg University Library.
If you have any questions about AAU Student Projects or the research registration, dissemination and analysis at Aalborg University, please feel free to contact the VBN team. You can also find more information in the AAU Student Projects FAQs.