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DolWin Alpha

Wind energy from the North Sea to land

The DolWin Alpha Platform is located about 60 kilometres off the German coast in the North Sea. An offshore 800 MW HVDC Converter Platform that converts alternating current to direct current to connect offshore wind farms. DolWin Alpha receives electrical energy from nearby wind turbine collection stations via 155kV 3-phase alternating current cables. This alternating current is converted at the HVDC station to 320 kV direct current so that it can be transported to the onshore converter station in Dörpen. Iv-Offshore & Energy was responsible for the design of the platform and the associated facilities on behalf of the main contractors, Siemens and Heerema Fabrication Group.

Technical data

Dimensions:
Topside 62 x 43,3 x 40m (excluding Helicopter Deck)                           
Jacket 45 x 42 x 44m

Weight:
Topside 11,000 T
Jacket  4,000 T    

Water Depth: 27m
Accommodation: 24 persons
Input: 8 cables of 155 kV AC
Output: 2 x 320 kV DC
Throughput: 800 MW
Power Generation: 2 x 3050 kV A/ 10 kV Diesel
Would you like to know more about the possibilities for your project? Mark will be pleased to share ideas about your engineering issues. Contact him by email or call​ 088 943 3300.
We are always on the lookout for new talent. How can you strengthen our team? Working at Iv means working on challenging and varied projects every day. At the office or on location. Check now to see if you can find an exciting challenge within your specialism!
D2605D5B-18C7-4314-ACCB-29BA3C99A8E4Created with sketchtool.
D2605D5B-18C7-4314-ACCB-29BA3C99A8E4Created with sketchtool.