Sökning: "Wind power"

Visar resultat 11 - 15 av 405 avhandlingar innehållade orden Wind power.

1. 11. Ride The Wind : Symbiotic Business Model Innovation for the Chinese Wind Power Industry

   Författare :Lihua Liu; Mike Danilovic; Maya Hoveskog; Susan Lijiang Sun; Bingwen Yan; Högskolan i Halmstad; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Symbiotic Business Model; Business Model Innovation; Wind Power Innovation; China; Goldwind; 共生的商业模式，商业模式创新，中国，风电行业创新，金风科技;

   Sammanfattning : China has become one of the world’s leading countries in renewable energy, particularly in wind power. Goldwind Science and Technology has become not only the largest wind turbine manufacturer in China, but also one of the largest in the world. LÄS MER

3. 12. Wind-wave interaction effects on offshore wind energy

   Författare :Ali Al Sam; Strömningsteknik; []
   Nyckelord :wind-wave; swell; atmospheric boundary layer; marine atmospheric boundary layer; atmospheric turbulence; Large-eddy simulation; actuator line; wind sea; offshore technology; wind energy; wind turbine; aerodynamic;

   Sammanfattning : This thesis is devoted to the investigation of the impacts of fast moving ocean surface waves on the aerodynamics of offshore wind turbines. The impacts of non-locally generated waves (swell) on the Marine Atmospheric BoundaryLayer (MABL) and thereby on offshore wind turbine aerodynamics are studied numerically by using Large Eddy Simulations and the Actuator Line Method. LÄS MER

4. 13. On the Dynamics and Statics of Power System Operation : Optimal Utilization of FACTS Devicesand Management of Wind Power Uncertainty

   Författare :Amin Nasri; Mehrdad Ghandhari; Zhang Xiao-Ping; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Trajectory sensitivity analysis TSA ; transient stability; small signal stability; flexible AC transmission system FACTS devices; critical clearing time CCT ; optimal power flow OPF ; network-constrained ac unit commitment ac-UC ; wind power uncertainty; wind power spillage; stochastic programming; Benders’ decomposition; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : Nowadays, power systems are dealing with some new challenges raisedby the major changes that have been taken place since 80’s, e.g., deregu-lation in electricity markets, significant increase of electricity demands andmore recently large-scale integration of renewable energy resources such aswind power. LÄS MER

5. 14. On Distributed Balancing of Wind Power Forecast Deviations in Competitive Power Systems

   Författare :Richard Scharff; Lennart Söder; Mikael Amelin; Gerard L. Doorman; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; balancing; wind power integration; electricity market; wind power variations; wind power forecast errors;

   Sammanfattning : Wind power generation does, on the one hand, contribute to a less polluting and more sustainable electric power generation mix. On the other hand, the uncertainty and the variability of the power output do challenge the operation of the power system: hourly variations in wind power generation are hardly predictable in a precise way. LÄS MER

7. 15. Experimental studies of wind turbine wakes : power optimisation and meandering

   Författare :Davide Medici; Henrik Alfredsson; Martin O.L. Lansen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wind energy; power optimisation; active control; yaw; vortex shedding; wake meandering; Fluid mechanics; Strömningsmekanik;

   Sammanfattning : Wind tunnel studies of the wake behind model wind turbines with one, two and three blades have been made in order to get a better understanding of wake development as well as the possibility to predict the power output from downstream turbines working in the wake of an upstream one. Both two-component hot-wire anemometry and particle image velocimetry (PIV) have been used to map the flow field downstream as well as upstream the turbine. LÄS MER