The approach of assessing the nominal score of a wind turbine has no globally accepted  
standard. The issue arises due to the fact the energy output of the turbine relies upon at the  
rectangular of the rotor diameter and the dice of the wind pace.  What  
score need to then be assigned to this turbine? Should we additionally specify the rated pace?  
Early wind turbine designers created a score machine that designated the energy output at  
a few arbitrary wind pace. This approach did now no longer paintings nicely due to the fact anybody should now no longer  
agree on one pace for specifying the energy score. The “rated” wind speeds numerous from  
 to fifteen m/sec below this practice. Manufacturers quoted at the better facet to say a  
more output from the identical design.  
Such confusion in quoting the score changed into averted with the aid of using a few European producers who  
quoted simplest the rotor diameter. But the confusion persevered as to the most energy the  
gadget can generate below the very best wind pace wherein the turbine can continuously  
and properly operate. Many producers have, therefore, followed the blended score  
designations the generator`s height electric potential observed with the aid of using the wind turbine  
diameter. For example, a three hundredwind machine approach a three hundred-kW electric generator  
and a diameter turbine. The unique rated potential (SRC) is regularly used as a Comparative index of the wind turbine designs. It measures the strength era potential  
in step with rectangular meter of the blade-swept area, and is described as follows in gadgets 
. The better-SRC rotor blades have better running stresses, which  
bring about a shorter fatigue life. All pressure attention areas are cautiously recognized and  
removed in excessive-SRC designs. Modern layout tools, inclusive of the finite detail pressure  
evaluation and the modal vibration evaluation, may be of wonderful price in rotor layout.  
Turbine score is critical because it shows to the device fashion dressmaker a way to length the electrical  
generator, the plant transformer, and the connecting cables to the substation and the  
transmission hyperlink interfacing the grid. The strength device ought to be sized at the peak  
potential of the generator. Because turbine strength relies upon at the dice of the wind velocity,  
the device-layout engineer fits the turbine and the generator performance  
characteristics. This manner deciding on the rated velocity of the turbine to suit with the  
generator. As the gearbox and generator are synthetic most effective in discrete sizes, deciding on  
the turbine`s rated velocity may be complex.