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.

CDM bubble is bursting?

                                               
                                          Where the techonology comes from ? mostly EU.
CDM was buzzword till 5 years back, but where are the projects now?

Whats up for Indian Wind Energy Sector?

The era of exponential growth is over in India.

Same we see in the table below, 

Well, the fact is after withdrawal of AD ( Accelerated Depriciation) and GBI( Generation Based Incentive), wind energy scene in India is dull.

• Even though revised estimated wind energy potential in India is 102 GWe ( @80m hub height), govt's emphasis on solar energy will not let this potential be utilised.
• There are 46 types of tubines manufactured in India. ( annual capacity is 12000 MWe)
• Induction Genearators, Optislip Induction Generators , Doubly Fed Induction Generators, and hybrid generators ( single stage gear box + synchronous generator) and squirrel cage Induction Generators ( with stall turbines for low wind conditions) have been used in India.
• Hardly any Class I sites are left for development.

  

Largest Offshore Turbine

Features:

• Carbon fire blades.
• 300 feet range blade dia.
• 10 MW machine.
• ETI has given contract to Blade Dynamics for setting up.

India having such a long coastline can expect 100000 such turbines, That becomes 1000 MW of wind power for India. !