Fourth, the application of the fan.
1. Small wind turbine independent power supply system.
Includes five major parts:
Wind turbine: power generation
Charge controller: protects the battery state. When it is full, it enters the stall state and protects the fan.
Battery: Realize system energy storage
Inverter: According to the change of the electric load, the reverse electric appliance protects the system when the user uses the overload and short circuit. When the battery is under voltage, the power supply is automatically stopped to protect the battery.
user:
If using 400W, 600W fans, it is recommended that users should not use washing machines or refrigerators (small capacity is acceptable), one is because the starting current is too large, the other is relatively speaking, the configuration of the inverter
To increase the cost by more than 1000W, the cost increases.
2. Why is there no direct relationship between fan capacity and power capacity? How to measure the amount of power generated by the fan?
The ability of wind turbines to generate electricity is directly related to the load capacity of users. The key depends on electricity consumption and resource conditions.
Electricity consumption = power * usage time
Wind utilization coefficient rate: 0.12~0.26
Wind turbine coefficient rate: 0.8 (combined utilization of wind turbines)
For example, if the 400W wind and solar hybrid street lamp is used in Guangzhou, the power generation per day should be: 400W fan * 24 hours * 0.12 * 0.8 = 0.92 kWh
The amount of electricity generated is 1.3-1.5 times that of electricity.
3. Why use wind and solar hybrid power generation? .
(1) Considering the defects of resources
The randomness of wind power generation is large, and it is within the control range of non-humans. Therefore, the degree of customer demand can be met anytime and anywhere. If wind-solar hybrid power generation is used, resources can be effectively improved.
Rate, to meet customer requirements to a greater extent under the same geographical and material conditions.
Complementary scenery: resources are complemented, energy is stored every day, the sun can be used during the day, the wind is used at night, the summer sun is large, and the winter wind is large, which can effectively utilize resources more.
(2) Technical
Solar power generation is 17V, and the battery is 12V. Therefore, solar charging is relatively slow and stable, because the state of the battery is dependent on the flow of positive and negative ions.
In the large case, the plate is easy to vulcanize, which is not conducive to the service life of the battery, but the wind power generation is different. The energy of the wind belongs to the high current charging, which can activate the plate frequently and prolong the service life of the battery.
(3) Economics
Compared with solar generators, the wind-solar hybrid generator only needs 1/3-1/4 of the solar generator. According to the power generation, the street lamp uses 300W solar panels, and it can not guarantee the user to use electricity all day. Complementing relatively effectively in the same geographical location and environment can effectively improve the use of street lamps, utilization and reliability, making the application of wind-solar complementary street lamps in the city become possible.
4. Use objects
When Hu Yaobang inspected remote areas in 1981, he asked relevant state departments to solve the problem of electricity use in remote areas. After the investigation of relevant personnel, it was most feasible to decide to use small-scale wind power generation. Therefore, wind turbines have been positioned for nearly 20 years. Use in remote areas. Remote area
The former shortcoming is that there is a group that needs no purchasing power. Nowadays, under the advocacy of creating an energy-saving society, various new energy sources are actively utilized throughout the country and the world. After the two sessions in China, we must take a road of sustainable development, and energy conservation has become an indicator of the performance of government officials. (municipal project)
Current positioning: 1. Developed countries require new energy sources,
2. The two Chinese associations marked the path of conservation and sustainable development, and the assessment of political achievements CDP was linked to energy conservation. The focus of conservation was on municipal projects.
3. As a new selling point in real estate, such as Park Island in Hong Kong, the use of wind-solar hybrid generators can calculate its cost into the construction cost. fiscal. According to the above, the current complementary scenery can be gradually applied to urban municipal projects and small household power supply projects.
