The details are as follows:
1. Cause the turbine blades to break. During operation, the turbine blades vibrate due to the impact of uneven airflow. When operating at normal frequency, the turbine blades do not resonate. When operating at low frequency, the final blades may resonate or be close to resonance, which will significantly increase the vibration stress of the blades. If it takes a long time, the blades may be damaged or even broken.
2. Reduce generator output. The frequency decreases, the rotation speed decreases, the volume of air blown by the fans at both ends of the generator decreases, and the cooling conditions deteriorate. If the power remains unchanged, the generator temperature increases and may exceed the permissible temperature. insulating material. In order to increase the temperature. If the admissible value is not exceeded, lGenerator power will inevitably be reduced.
3. Reduce the voltage at the generator terminal. Because as the frequency decreases, the internal potential decreases, resulting in a decrease in voltage. At the same time, due to the decrease in frequency, the speed of the generator decreases and the coaxial excitation current decreases, resulting in voltage across the generator. another decrease.
4. Reduce the production of auxiliary equipment for thermal power plants. When operating at low frequency, the speed of all AC motors in the power plant will decrease accordingly, so that the output of auxiliary equipment such as water pumps, fans and coal crushers in the power plant Thermal energy will also decrease, affecting the production of the power plant. Among them, the greatest impact is on high-pressure water supply pumps and heat grinders.rbon. Due to the drop in production, active power supply to the grid is even more scarce, leading to a further drop in frequency, creating a vicious cycle.
5. Harm users. Decreasing the frequency will cause the user's motor speed to decrease and the output to decrease, affecting the output and quality of the user's products. In addition, decreasing the frequency will lead to inaccurate electrical clocks, increased errors in electrical measuring instruments and malfunctions of automatic devices and relay protections.
Why does the engine vibrate when the generator belt is loose?
It will work forever. Under ideal conditions, the motor drives the generator to cycle and generate electricity, which can run indefinitely. A generator refers to a devicewhich generates electricity when operated by mechanical power. In this conversion process, mechanical power comes from various other forms of energy, such as wind energy, water energy, thermal energy, solar energy, etc.
Why can wind turbines generate large amounts of electricity if they rotate slowly?
If the generator belt is loose, it will usually make a "chirping" sound and will not cause the car to shake.
Only a large mass vibration can cause the entire vehicle to vibrate. For example, if an individual cylinder is not working, the force on the crankshaft will disappear at a certain angle within a range of 360 degrees. destroying the dynamic balance and causing the entire engine to vibrate.
The belt is loose. Due to the relative movement between the pulley and the belt, there will be friction noise, but the motor is running nnormally. This affects the generator and the water tank fan, which lose their rotation speed. The inertia of these two components is low and will not cause the entire vehicle to shake.
Wind turbines do not generate more electricity the faster they spin. Note that the power output of a generator can be roughly thought of as proportional to the product of speed and torque. The torque here is the electromagnetic force obtained by excitation of the torque generator. The torque is so great that the wind cannot move the turbine. At this time, the rotation speed is 0, the torque is very large, and the power output is 0. When the torque is zero, the speed accelerates to a very high level. It's actually a flying car, which is extremely dangerous. Since the electromagnetic torque is 0, the output power is 0. The power is 0 at both extremes, there exists donc an optimal speed that maximizes power output.
The ideal value of this optimal speed can be calculated from Baez's theory, which is the ratio between the linear speed of the blade tip and the wind speed in front of the wheel. At a certain wind speed, there is a non-linear relationship between fan power and blade tip speed ratio. Through the theoretical derivation, the optimal peak speed ratio for each wind speed can be calculated. A wind turbine is a device that converts wind energy into mechanical energy, then allows machines to operate and finally generates alternating current. In fact, wind energy can also be considered solar energy because it is also used to generate electricity and is not harmful to our environment.
It is capable of producing a large amount of energy due to its internal structuree, rather than depending on the external rotation speed of the blade. It's better to spin your own windmill faster. gear inside that turns silently. The windmill rotates at a speed of 20 to 30 times per minute, and the wind is not enough. That doesn't mean it can't spin faster. This is due to the weight and length of the blades. you see it from a distance, don't think it's big, in fact it is. The blade is more than 20 meters long, and the weight can be imagined. If you turn too fast it will put a lot of pressure on the. base. If a generator collapses or its blades break, it could cause an accident and injure nearby residents. If it spins slowly, there will be no such thing. This will ensure that the windmill blades will not be injured, prone to accidents, and will not affect their power generation efficiency. After all, there is a small enginehidden inside! it, even if the strong wind outside turns very slowly. There are reduction gears and gears inside, and its speed will also increase by about fifty times, basically maintaining a speed of about fifteen hundred revolutions per minute.