The principle of wind-solar hybrid
solar street light The wind-solar hybrid power generation system is a device that converts wind energy and light energy into electrical energy. The working principle of the wind-solar hybrid street light is to use the natural wind as power, and the wind wheel absorbs the wind energy, drives the wind turbine to rotate, and converts the wind energy. For electrical energy, through the rectification and voltage stabilization of the controller, the alternating current is converted into direct current, and the battery is charged and stored. Using the photovoltaic effect, the solar energy is directly converted into direct current, which is used by the load or stored in the battery for backup. Wind-solar hybrid solar street light accessories Solar cell modules, fans, solar high-power LEDs, LPS lamps, photovoltaic control systems, fan control systems, solar maintenance-free batteries and other components, solar cell module brackets, fan accessories, light poles, embedded parts, battery buried boxes and other accessories. The following is a detailed introduction: 1. Wind turbine Wind turbine is a facility that converts natural wind into electrical energy, and sends the electrical energy to the battery for storage. It cooperates with solar panels to provide energy for street lights. According to the power of the light source, the power of the wind turbine used is also different, generally 200W, 300W, 400W, 600W and so on. The output voltage also has 12V, 24V, 36V and so on. 2. Solar panels Solar panels are the core part of solar street light and the most valuable part of solar street light. Its function is to convert the radiation power of the sun into electrical energy, or send it to the storage battery for storage. Among the many solar cells, the most common and practical ones are monocrystalline silicon solar cells, polycrystalline silicon solar cells and amorphous silicon solar cells. In the eastern and western regions with sufficient sunlight, it is better to use polycrystalline silicon solar cells, because the production process of polycrystalline silicon solar cells is relatively simple and the price is lower than that of single crystal. In the southern region where there are many rainy days and relatively insufficient sunshine, it is better to use monocrystalline silicon solar cells because the performance parameters of monocrystalline silicon solar cells are relatively stable. Amorphous silicon solar cells are better in the case of insufficient outdoor sunlight, because amorphous silicon solar cells have lower requirements for solar lighting conditions. 3. Solar controller Regardless of the size of solar lamps, a charge and discharge controller with good performance is essential. In order to prolong the service life of the battery, its charging and discharging conditions must be limited to prevent overcharging and deep charging of the battery. In places with large temperature difference, a qualified controller should also have temperature compensation function. At the same time, the solar controller should have both street lamp control functions, light control and time control functions, and should have automatic load control at night, which is convenient for extending the working time of street lamps in cloudy and rainy days. 4. Battery Since the input energy of the solar photovoltaic power generation system is extremely unstable, it is generally necessary to configure the battery system to work. Generally, there are lead-acid batteries, Ni-Cd batteries, and Ni-H batteries. The selection of battery capacity generally follows the following principles: first of all, on the premise that it can meet the night lighting, the energy of the solar cell components during the day should be stored as much as possible, and at the same time, the electric energy should be able to be stored to meet the continuous cloudy and rainy night lighting needs. The battery capacity is too small to meet the needs of night lighting, and the battery is too large. The battery should be matched with solar cells and electricity load (street lights). The relationship between them can be determined in a simple way. The solar cell power must be 4 times higher than the load power for the system to work properly. The voltage of the solar cell must exceed the working voltage of the battery by 20 to 30% to ensure that the battery is normally negatively charged. The battery capacity must be more than 6 times the daily consumption of the load. For the selection of batteries, we recommend the use of colloidal (Gel) batteries, which have a long service life and are more environmentally friendly. 5. Light source The light source used by solar street light is an important indicator of whether solar lamps can be used normally. Generally, solar lamps use low-voltage energy-saving lamps, low-voltage nano lamps, electrodeless lamps, and LED light sources. (1) Low-voltage energy-saving lamps: low power and high luminous efficiency, but the service life is 2000 hours, and the low-voltage lamp tube turns black. It is generally suitable for solar lawn lamps and garden lamps. (2) Low-pressure sodium lamps: low-pressure sodium lamps have high efficiency (up to 200Lm/w), and are used less. (3) Electrodeless lamp: low power and high light efficiency. The lamp can be used under the condition of 22V (pure sine wave, frequency 50 Hz) ordinary commercial power, and its lifespan can reach 50,000 hours. The lifespan of solar lamps is greatly reduced and similar to that of ordinary energy-saving lamps (because solar lamps are all square wave inverse counts) Inverter, solar power 220V output frequency, item position, voltage can not be compared with ordinary mains. (4) LED: LED solar street light light source, long life, up to 1,000,000 hours, low operating voltage, no need for inversion Inverter, high luminous efficiency, domestic 50Lm/w, imported 80Lm/w, with the advancement of technology, the performance of LED will be further improved. LED as the light source of solar street light will be a trend. 6. Lamp pole and lamp housing The height of the light pole should be determined according to the width of the road, the spacing of the lamps, and the illuminance standard of the road. The lamp shell has collected many foreign solar lamp materials according to our tungsten. Between the beautiful shell and energy saving, most of them choose energy saving, and the appearance of lamps and lanterns is required. Not high, relatively practical on the line.
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