Abstract
Modular Multilevel Converters (MMC) are a common VSC topology for high power applications like HVDC. Different modulation techniques are being used with this converter topology. Low excitation of harmonics is considered an important advantage of multilevel VSCs, but the generation of a high frequency spectrum above 2 kHz due to the high number of switching devices has not yet been sufficiently investigated. This paper analyses the influence of the modulation strategy and voltage balancing algorithms on the voltage spectrum of the MMC. This is done by simulations of a MMC model using MATLAB / Simulink. Multi-Carrier Pulse Width Modulation strategies and Nearest Level Control are compared. Voltage balancing is analysed by a comparison of different variations of the sorting technique. Simulation results show that modulation affects general composition of the voltage spectrum while voltage balancing influences excitation of high frequency spectral components.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
