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Wednesday, July 10, 2013

Parameters of wind turbines which affect annual energy output (AEO)

Rated Output Power (ROP):-

rotor diameter changes the ROP.

RPM :- larger dia reduces rotor RPM. 

Capacity Factor ( CF):- higher capacity factor means higher AEO, but practically CF never goes beyond 40

Q) Does wind speed affect AEO?

Surprisingly the answer is NO !
This is because AEO is calculated upon average wind speed, which is already accounted for in CF.

Maximum Tip Speed that can be obtained is 70-80 m/s.

Cut in wind speed for most of the turbines is 5 m/s and cut out is 25 m/s 

O & M costs can be taken as 8 % of annual gross revenue.