Suppose wind speed v air density ρ generator fan blade radius R air mass hitting the fan blade within t time m = ρπR^2Vt, energy obtained by the fan blade E = 1/2mv^2 = 1/2ρπR^2V ^3t
P0=E/t=1/2ρπR^2V^3
Suppose the generator efficiency η
The generated power of the wind turbine P=1 /2ηρπR^2V^3
Please adopt if you are satisfied.
This is a 2.0 MW wind turbine. How much electricity can it generate on average every day?
The formula of the power curve is 0.5*A*p*Cp*V^3 A is the area swept by the fan blades, P is the air density, V is the wind speed, and Cp is the wind energy utilization rate. Cp is related to wind speed, wind wheel speed, and pitch angle. Generally, for fixed pitch and fixed wind speed conditions, Cp will first increase and then decrease with the speed
For a 2MW wind turbine, which is a 2000KW wind turbine, When fully charged, it can generate 2,000 kilowatt-hours of electricity in one hour. Depending on the wind farm, the annual full power generation hours of the wind farm are different. Taking a wind farm with 3000h annual power generation hours as an example: 3000/365*2000=16384 kWh.
It depends on the capacity of the single machine (the electric energy generated by 850KW, 1MW, 1.5MW, 2MW, 3MW, etc. is definitely different), and it also depends on the wind operation. 1 kilowatt hour of electricity = 1KW·h. According to this calculation, an 850KW wind turbine can generate 850*24=20400KW·h every day. This is the theoretical value. It also depends on wind conditions, power transmission and transformation losses, etc.
Extended information:
Due to the unstable air volume, the wind turbine output It is alternating current of 13~25V, which must be rectified by the charger and then charge the battery, so that the electrical energy generated by the wind turbine can be converted into chemical energy. Then use an inverter power supply with a protection circuit to convert the chemical energy in the battery into AC 220V mains power to ensure stable use.
Mechanical connection and power transmission: The horizontal axis fan blades are connected to the universal elastic coupling through the gearbox and its high-speed shaft, and transmit the torque to the drive shaft of the generator. This coupling should be It has good damping and vibration absorption characteristics, which is reflected in absorbing an appropriate amount of radial, axial and certain angular deflections, and the coupling can prevent the overload of the mechanical device.
Baidu Encyclopedia-Wind Turbine