Wind power certainly has the advantage of being clean, but the main differences between wind power and coal power are: 1. The investment in wind power units is much larger, but the annual effective power generation hours are much less (coal power can generate more than 6,000 hours, while wind power can generate more than 3,000 hours) difficulty). 2. Wind power will suddenly lose power when there is no wind, while coal power is quite stable and safe. 3. The cost of wind power is high, and ordinary people are not convinced by the high price of clean electricity. The government needs subsidies, but the cost of coal power is low, and ordinary people at the bottom of society can accept it. 4. In terms of the operational safety of large power grids, if the proportion of wind power is too large, it will easily cause the power grid system to oscillate or even collapse, while coal power is very safe for the power grid. Therefore, wind power is one of the future development directions, but there are still obvious technical (grid-connected) shortcomings and high costs.
Why do some power-generating windmills not spin?
First of all, are you sure the wind is strong enough for the fan to spin? Then there is no problem with a larger inverter, but there is no problem with a larger inverter. Then what is your load? It's definitely not a battery. The power of the battery has nothing to do with the operation of the fan. Try connecting it with a large load. Also, if it still doesn't turn, it means the brake is locked inside, so read the manual. Check if there is any internal structure or anything like that. This problem also occurs if there are brakes and protection. A 1000W fan is generally a system with a simple structure. As long as there is no problem with the inverter, it should be fine. Be careful not to short circuit.
This reason is a bit broad. Shutdown is a possibility. It may be that the variable pitch system makes the angle of the blade reach 90 degrees, which refers to the minimum windward surface of the blade, so that the blade cannot fully face the wind. , causing the wind speed to fail to rotate after reaching the rated wind speed; it is also possible that the yaw system causes the blades to not face the wind; and the wind speed in winter is the same as the wind speed in summer, but the blades can rotate in winter, but they may not rotate in summer. It will rotate because the temperature is low in winter and the air density is high. In summer, the temperature is high and the air density is low. This is what we Northeasterners often say: the wind in winter is strong, but the wind in summer is not strong.