1. Calculate the force on each blade of the wind turbine: It is known that the length of each blade of the Vista wind turbine is 44 meters, the air density is 1.225kg/m3, and the wind speed is 11.4m/s. According to Bates' formula, the thrust on each blade is F=(1/2)ρV2S power, where ρ is the air density, V is the wind speed, and S is the blade area.
2. Calculate the total force on the wind turbine: The wind turbine has three blades, so the total force is three times the force on a single blade. Fenjiu 3. Calculate the output power of the wind turbine: Knowing the total force of the wind turbine and the transmission ratio of the wind turbine gearbox, the output power of the wind turbine can be calculated.
Among all wind energy generators, the amount of electrical energy generated by each rotation of the wind energy generator varies depending on the power of the wind energy generator.
For example, the most common 2MW direct-drive wind energy generator, when the wind energy is sufficient and stable, can generate 2,000 degrees of electricity every 60 minutes, and each rotation of the fan blades requires 3.5 seconds, 60 minutes, is 3600 seconds, so the electricity generated by the generator per second is 0.56 kilowatt-hours. Then the electricity generated by the fan of the wind energy generator for each rotation is 0.56 × 3.5 seconds, which is 1.94 kilowatt-hours.
Extended information
Generator principle
The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then through the The speed machine increases the speed of rotation to prompt the generator to generate electricity. According to current wind turbine technology, power generation can start at a breeze speed of about three meters per second (the level of breeze).
Due to the unstable air volume, the wind turbine outputs alternating current of 13 to 25V, which must be rectified by the charger, and then the battery is charged, so that the electrical energy generated by the wind turbine is 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.