Browsing SINTEF Open by Author "Endegnanew, Atsede Gualu"
Now showing items 1-11 of 11
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Convex Optimization-based Control Design for Parallel Grid-Connected Inverters
Kammer, Christoph; D'Arco, Salvatore; Endegnanew, Atsede Gualu; Karimi, Alireza (Journal article; Peer reviewed, 2018)This paper presents a novel frequency-domain approach towards the control design for parallel grid-connected voltage source inverters (VSIs) with LCL output filters. The proposed method allows to design the controllers of ... -
Coordinated Control between Wind and Hydro Power Systems through HVDC Links
Endegnanew, Atsede Gualu; Øyslebø, Eirik Veirød; Huertas-Hernando, Daniel; Bakken, Bjørn Harald (Peer reviewed; Journal article, 2012)The main objective of this paper is to show how the control systems on wind farm turbines, HVDC cables and power generating units can be coordinated to improve power system balance in the event of a wind farm shut down due ... -
Frequency Quality in the Nordic Power System: Wind Variability, Hydro Power Pump Storage and Usage of HVDC Links
Endegnanew, Atsede Gualu; Farahmand, Hossein; Huertas-Hernando, Daniel (Peer reviewed; Journal article, 2013)This work investigates the effect that variable power production from offshore wind farms in the North Sea will have together with the use of pumped storage facilities at hydropower stations in Norway, on the Nordic ... -
Impact on Power System Frequency Dynamics from an HVDC Transmission System With Converter Stations Controlled as Virtual Synchronous Machines
Palombi, Francesco; Piegari, Luigi; D'Arco, Salvatore; Endegnanew, Atsede Gualu; Suul, Jon Are Wold (Chapter; Peer reviewed, 2019) -
Integrated Modelling Platform for Dynamic Performance Assessment of Floating Wind Turbines
Endegnanew, Atsede Gualu; Satertro, Kristian; Gjerde, Sverre Skalleberg; Svendsen, Harald Georg; Anaya-Lara, Olimpo; Tande, John Olav Giæver; Uhlen, Kjetil; Gjolmesli, Svein (Journal article; Peer reviewed, 2015)The paper presents an integrated modelling platform that can be used to assess the dynamic performance of an offshore wind turbine mounted on a spar-buoy type floater. Sub-models of generator and converter controllers and ... -
Interoperability of Modular Multilevel Converters and 2-level Voltage Source Converters in a Laboratory-Scale Multi-Terminal DC Grid
D'Arco, Salvatore; Endegnanew, Atsede Gualu; Guidi, Giuseppe; Suul, Jon Are Wold (Chapter; Peer reviewed, 2018)The prospect of future multivendor HVDC systems has led to concerns about interoperability between converter terminals based on different technologies. This paper investigates the interoperability of converter terminals ... -
Power hardware-in-the-loop validation of post-primary voltage control scheme
Degefa, Merkebu Zenebe; D'Arco, Salvatore; Morch, Andrei Z; Endegnanew, Atsede Gualu (Chapter; Peer reviewed, 2017)The concept and experimental validation process of the Web-of-Cells (WoC) based Post-Primary Voltage Control (PPVC) developed in EU FP7 project ELECTRA IRP is presented in this paper. The main objective of PPVC is to provide ... -
Power oscillation damping with virtual capacitance support from modular multilevel converters
Taffese, Abel Assegid; Endegnanew, Atsede Gualu; D'Arco, Salvatore; Tedeschi, Elisabetta (Journal article; Peer reviewed, 2019)Power oscillation damping (POD) is one of the ancillary services expected from high-voltage direct current (HVDC) converters.When providing POD to the ac side, converters draw power from the dc side, which can cause ... -
Power-hardware-in-the-loop approach for emulating an offshore wind farm connected with a VSC-based HVDC
Torres Olguin, Raymundo E.; Endegnanew, Atsede Gualu; D'Arco, Salvatore; Morel, Adrien (Chapter, 2017)The real-world interaction of an offshore wind farm with an HVDC is complex due issues such as noise, randomness of event timings, and hardware design issues that are not well explored. Numerical simulations are widely ... -
Using Decentralized Control Techniques for Interaction Analysis in Hybrid AC/DC Grids
Endegnanew, Atsede Gualu; Kalemba, Lester; Uhlen, Kjetil (IEEE Power & Energy Society General Meeting;2018, Chapter; Peer reviewed, 2018)One of the ancillary services that can be provided by Multi-terminal Direct Current (MTDC) grid to connected ac grids is power oscillation damping (POD). However, using PODs at multiple terminals of an MTDC grid results ... -
Wind Turbine Model Validation with Measurements
Marvik, Jorun Irene; Endegnanew, Atsede Gualu (Peer reviewed; Journal article, 2012)The objective of this work is to validate wind turbine models available in commercial simulation tools with measurements. Results are shown for two turbines located in two different wind farms; wind turbine 1 is a fixed ...