09-02-2016, 04:37 PM
Onshore V/s Floating
In the region above rated wind speed closed-loop bandwidth < lowest relevant structural frequency onshore: first tower bending mode floating: first tower pitching mode
bandwidth significantly lower
Consequently, increased variation of the rotor speed in (Larsen and Hanson, 2007):
±10% onshore ±30% floating
Many DFIG-designs
max. rotation speed variation = ±30%