Wind Turbine Power Generator Equation Formulas Design Calculator
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Solving for generator efficiency.
Scroll to the bottom to see typical input values for the variables.
Inputs:
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Conversions:
wind power (P)
= 0
= 0
watt
air density (ρ)
= 0
= 0
kilogram/meter^3
rotor swept area (A)
= 0
= 0
meter^2
coefficient of performance (Cp)
= 0
= 0
wind velocity (V)
= 0
= 0
meter/second
gear box bearing efficiency (Nb)
= 0
= 0
Solution:
generator efficiency (Ng) = NOT CALCULATED
Other Units:
Change Equation
Select to solve for a different unknown
Select to solve for a different unknown
 | Solve for wind power. |
 | Solve for air density. |
 | Solve for swept area of the rotor, propeller or blades. |
 | Solve for coefficient of performance. |
 | Solve for wind speed. |
 | Solve for generator or alternator efficiency. |
 | Solve for gear box bearing efficiency. |
| Symbol | Description | Typical values |
| ρ | air density | 1.2 kg/m3 (sea level) |
| Cp | performance coefficient | 0.35 is typical 0.56 is the theoretical maximum known as the Betz limit. |
| Ng | generator efficiency | 50 percent to 80 percent. |
| Nb | gearbox | 95 percent |
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