1. Siemens Wind Power A/S, DK‐7330 BrandeDenmark and Center for Electric Power and EnergyDepartment of Electrical EngineeringTechnical University of DenmarkDK‐2800LyngbyDenmark
2. Siemens Wind Power A/SDK‐7330BrandeDenmark
3. National Grid Electricity Transmission plc (National Grid)WarwickCV34 6DAUK
4. Center for Electric Power and EnergyDepartment of Electrical EngineeringTechnical University of DenmarkDK‐2800LyngbyDenmark