Wind Power Charging: Determining Power Output from Wind Speed

[jkr9251]

I am trying to charge a battery using wind power! but i can't seem to find anything telling me how i can determine the power output coming from the generator, when all i know is the wind speed.. i know that the blades on the fan will have to be small but using the right gears with the high speed winds that I will be having, i should be able to get the shaft to the motor to turn at any desired RPM. Does anyone know how where i can find a chart that will show me what the power output is, compared to the RPM's.

 

[Andrew Mason]

I am trying to charge a battery using wind power! but i can't seem to find anything telling me how i can determine the power output coming from the generator, when all i know is the wind speed.. i know that the blades on the fan will have to be small but using the right gears with the high speed winds that I will be having, i should be able to get the shaft to the motor to turn at any desired RPM. Does anyone know how where i can find a chart that will show me what the power output is, compared to the RPM's.

The power coming from the generator depends on the power you are able to extract from the wind. To determine that you need to know the energy that the moving air transfers to the windmill. This is some small percentage of the kinetic energy of the air that passes through the windmill each second and depends upon the design of the windmill.

So, you need to know the wind speed and dimensions of your windmill (that will allow us to figure out the kinetic energy of the wind), and the efficiency of your windmill in converting that energy into electrical energy.

AM

 

[astrokreng]

There are several factors that can affect the power output from a wind turbine, including the size and design of the blades, the efficiency of the generator, and the wind speed. In order to accurately determine the power output from your wind turbine, you will need to know the specific characteristics and specifications of your equipment.

One way to estimate the power output is by using the power curve for your specific wind turbine model. This curve plots the relationship between wind speed and power output and can be found in the manufacturer's specifications or documentation. By inputting the wind speed and corresponding power output into the curve, you can estimate the power output of your turbine at a given wind speed.

Another method is to use an anemometer to measure the wind speed and then use a formula to calculate the power output. The formula for calculating the power output from a wind turbine is P = 0.5ρAV^3, where P is the power (in watts), ρ is the air density, A is the swept area of the blades, and V is the wind speed. By plugging in the values for these variables, you can calculate an estimated power output for your wind turbine.

It is important to note that the power output from a wind turbine will vary depending on the wind speed, and it is not a constant value. Additionally, the power output may also be affected by other environmental factors such as temperature and air density. It is recommended to consult with a wind energy expert or refer to the manufacturer's specifications for a more accurate estimation of the power output from your wind turbine.