Candidate: Marten Pape
Title: Operational states in series-connected DC Wind Farms
Date: December 6, 2018
Time: 11:00 AM
Place: EIT 3142
Supervisor(s): Kazerani, Mehrdad
Abstract:
Large-scale offshore wind farms contain many wind turbines in a locally confined space. The mass deployment of many turbines in a farm opens up the opportunity to investigate the use of DC voltage collection systems, effectively removing the need for offshore AC collection systems and related conversion equipment. The exact configuration of the DC collection system and power electronic converters in offshore wind turbines have a significant impact on the design and overall performance of such an offshore wind farm. In this seminar, offshore wind farms featuring series-connected DC wind farms in a single-string configuration are discussed. In particular, the implications on converter- and system-level voltages and currents are highlighted when using different types of power electronic converter configurations. Furthermore, the wind conditions experienced by individual turbines at a given time contain certain similarities. The similarities in wind speed experienced by individual wind turbines represent an opportunity to potentially reduce the electrical conversion equipment required to be deployed offshore and indicate potentials for conversion efficiency improvements. A power electronic converter configuration will be introduced that is designed to only process output power differences among wind turbines in order to better capture these similarities in wind speeds.