| WECS 2009: Lecture Session 3: DC Technologies for Wind Power | ||
| You are here: EPE Documents > 03 - EPE Seminar Papers > 003 - EPE Wind Energy Chapter Seminar (2009) > WECS 2009: Lecture Session 3: DC Technologies for Wind Power | ||
 | [return to parent folder] | |
 | Multiterminal HVDC Link - a Corridor for Wind Power from the North to the Load Centers of Norway - Presentation
By Kamran Sharifabadi, Terje Gjengedal | |
|
Abstract: Multiterminal HVDC Link - a Corridor for Wind Power from the North to the Load Centers of Norway, the presentation
| ||
| | Multiterminal HVDC for Offshore Windfarms – Control Strategy - Paper
By Temesgen M. Haileselassie, Tore Undeland, Kjetil Uhlen | |
|
Abstract: The use of HVDC for submarine power transmission is well known to increase the transmission capacity and decrease transmission losses. But so far this technology has been limited to interconnecting only two terminals as there was little or no serious demand for multi-terminal HVDC systems. With many researches going on to develop offshore wind farms in the North Sea and trends to electrify the offshore oil/gas platforms by HVDC connection from onshore, multiterminal HVDC (MTDC) could be a competitive solution for interconnecting offshore windfarms and other offshore systems into the onshore national grid. This paper discusses proposed control strategy for such a system. Voltage source converter (VSC) was selected for its suitability for MTDC system and for its flexibility in control. An equivalent circuit of the VSC in synchronous d-q reference frame has been established and decoupled control of active and reactive power was developed. A four terminal MTDC using VSCs was modeled and simulated in EMTDC/PSCAD software. A modified mix of voltage-margin-method and DC-voltaged-droop control has been used for reliable operation of the HVDC system avoiding the need for communication. Simulation results show that the proposed MTDC control system was able to maintain the DC voltage with in desired range during load switchings, step changes in power demand and was able to secure power to passive loads during loss of a DC voltage regulating converter terminal without the use of communication between terminals.
| ||
| | Multiterminal HVDC for Offshore Windfarms – Control Strategy - Presentation
By Temesgen M. Haileselassie, Tore Undeland, Kjetil Uhlen | |
|
Abstract: Multiterminal HVDC for Offshore Windfarms – Control Strategy, the presentation
| ||
| | Comparative Study of Different HVDC Transmission Systems for Offshore Wind Farms - Presentation
By Stephan Meier, Hans-Peter Nee | |
|
Abstract: Comparative Study of Different HVDC Transmission Systems for Offshore Wind Farms, the presentation
| ||
| | Design and Control Considerations for a 5 MW Fullbridge DC/DC Converter in a Wind Turbine - Paper
By Lena Max, Torbjörn Thiringer | |
|
Abstract: In this paper, the fullbridge DC/DC converter is evaluated for the application in a DC-based wind farm. A downscaled experimental model is used to verify the theoretical loss model with measurements, showing good agreement. The converter with varying voltage ratio has 2.2 % losses for an average wind speed of 7.2 m/s, while the converters with constant voltage ration have 1.5 % losses. Further, the duty cycle control gives lower losses than the phase shift control at low duty cycles.
| ||
| | Design and Control Considerations for a 5 MW Fullbridge DC/DC Converter in a Wind Turbine - Presentation
By Lena Max, Torbjörn Thiringer | |
|
Abstract: Design and Control Considerations for a 5 MW Fullbridge DC/DC Converter in a Wind Turbine, the presentation
| ||