Why don't wind turbine blades look like electric fans?

Introduction Why don't wind turbine blades look like electric fans? Due to factors such as the height and strength of wind towers, the shape of the blades must be such that they can rotate as efficiently as possible downwind while also requiring

Why don't wind turbine blades look like electric fans?

Due to factors such as the height and strength of wind towers, the shape of the blades must be such that they can rotate as efficiently as possible under the force of the wind while minimizing side thrust. Because it has to drive the generator, there is a lot of resistance to the rotation of the fan blades. If blades like those of an electric fan are used, the lateral thrust on the tower will be very significant. That is to say, to produce electricity from the wind, the wind cannot make the tower blow, that's why we use fan blades with the same lift principle as the wings of the tower. plane. The principle of the sail is found in Vanook's law.

A wind turbine of three to four kilowatts. Can it drive a three kilowatt motor?

First of all, the voltage of 220 V is sufficient to power most household appliances. However, if youIf you find that your permanent magnet DC motor wind turbine cannot power your home appliances, it may be due to the following reasons: Insufficient Current: Your generator may not produce enough current to power the home appliances. You need to check that your generator produces enough current at all wind speeds.

Excessive cable resistance: The cables connecting the generator to the appliance may have excessive resistance, restricting the flow of electricity. You need to check if the cable is intact and if it is damaged or has poor contact.

Capacitance matching problem: Some household appliances require specific capacitors to function properly. You need to check if your appliances require a particular capacity and if your generator creates that capacity.

Insufficient motor power: it is possible that the current motorntinu permanent magnet that you are using may be too small to operate some larger appliances. You may consider upgrading to a more powerful motor.

What should be added to the output depends on the specific cause of the problem. If this is due to insufficient current, you may need to add a booster device to the generator to increase the output voltage. If the cable resistance is too high, you must replace the cable. If it is a capacitor matching issue, you may need to add appropriate capacitors to the circuit. If the motor power is insufficient, you should replace it with a more powerful motor.

It cannot be driven, because the power of a wind turbine of three to four kilowatts refers to the rated power, which means the power at the rated wind speed. Under normal circumstances, the rated wind power. The speed ise 10 m/s, so generally speaking, it is impossible to reach the nominal power. In addition, the motor is an inductive load, so the starting current is very large under normal circumstances. starting is usually 3 times the engine power more times!

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