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"The complete hub, including spinner and all electrical parts; a segmented generator; and a rear section incorporating the main carrier.
As part of the technology roadmap study, a core team of experts reviewed the strengths and weaknesses of Enercon's current turbine technology, and established potential opportunities aimed at increasing competitiveness and lowering the levelised cost of energy (LCOE).
Our current transport logistics, site assembly and installation processes are lengthy, too." All future Enercon turbines will be based on the new design approach and will meet IEC wind class demands exactly, rather than exceed them.
They will be further developed in a basic "naked" configuration with multiple dedicated options made available depending on environmental and operating circumstances.
We carried out initial generator tests with copper from coils, but for the commercial products we switched to aluminium because it is far less sensitive to world market price fluctuations." As Hildebrand explained, aluminium is much cheaper than copper and only 30% of its weight.
In addition, the enlarged generator diameter reduces demand for active materials, especially aluminium and magnetic steel, and it boosts generator efficiency through a higher pole speed with unchanged rotor revolutions.