A master thesis from Aalborg University
Controller Interaction Assessment between a Full-scale Converter Wind Turbine and a MMC-HVDC Transmission System
Author(s)
Term
4. term
Education
Publication year
2015
Submitted on
2015-06-03
Abstract
High voltage dc (HVDC) transmission systems are an attractive solution for connecting Offshore Wind Farms. Technology based on voltage source converters (VSCs) is the most widely accepted configuration for these applications. The introduction of the modular multi-level converter (MMC) concept adds a new level of controllability but also complexity. Recent studies have reported that a VSC could negatively interact with the system resulting in a reduced electrical damping. An input admittance matrix approach is applied to study possibility of Controller Interaction between the wind farm components. The impact of basic controller parameter design on the passivity of the subsystems is analysed. Also the net-damping criterion is applied to conclude about the total system stability.
Documents
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