Blade angles
Special rotor blade positions (blade angles) of the E-82 E4 :
A: 2.5° Regular position during partial load operation: Maximum exploitation of available
wind energy.
B: 60° Idle mode (wind energy converter does not feed any power into the grid because the
wind speed is too low): Depending on the wind speed, the rotor spins at low speed or
stands still (if there is no wind at all).
C: 92° Feathered position (rotor has been stopped manually or automatically): The rotor
blades do not generate any lift even in the presence of wind; the rotor stands still or
moves very slowly.
Fig. 4: Special blade positions
6.3
WEC start
6.3.1 Start lead-up
As long as the main status is > 0, the wind energy converter remains stopped. As soon as the main
status changes to 0, the WEC is ready and the start-up procedure is initiated. If certain boundary
conditions for start-up, e.g. charging of the emergency pitching capacitors, have not been fulfilled
yet, status 0:3 - Start lead-up is displayed.
During the start lead-up, a wind measurement and alignment phase of 150 seconds begins.
Control system
D0376616-2 / DA 13 of 21
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