The principle of wind and solar hybrid solar street lights
The principle of wind and solar hybrid solar street lights
The wind-solar hybrid power generation system is a device that converts wind and light energy into electric energy. The working principle of wind-solar hybrid street lamps is to use natural wind as power, and the wind wheel absorbs the energy of the wind to drive the wind generator to rotate and convert the wind energy into electric energy. The function of rectification and voltage stabilization is to convert alternating current to direct current, charge the battery pack and store electrical energy. The photovoltaic effect is used to directly convert solar energy into direct current for use by the load or stored in the battery for backup.
Accessories for wind-solar street lights
Solar cell components, fans, solar high-power LEDs, LPS lamps, photovoltaic control systems, fan control systems, solar dedicated maintenance-free batteries and other components, solar cell component brackets, fan accessories, light poles, embedded parts, battery buried boxes, etc. Accessories. Next, we will introduce in detail:
1, wind turbine
Wind power generator is a facility that converts natural wind into electrical energy. The electrical energy is sent to storage batteries for storage. It cooperates with solar panels to provide energy for street lights. Depending on the power of the light source, the power of the wind turbine used is also different, generally 200W, 300W, 400W, 600W, etc. There are several kinds of output voltage, such as 12V, 24V, 36V.
2, solar panels
Solar panels are the core part of solar street lights and the most valuable part of solar street lights. Its function is to convert the sun's radiant power into electric energy, or send it to the storage battery for storage. Among many solar cells, there are three common and practical ones: 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 southern regions where there are more rainy days and relatively insufficient sunlight, 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 require relatively low sunlight conditions.
3. Solar controller
Regardless of the size of solar lamps, a good performance charge and discharge controller is essential. In order to prolong the service life of the battery, its charging and discharging conditions must be restricted to prevent the battery from overcharging and deep charging. In places with large temperature differences, a qualified controller should also have temperature compensation. At the same time, the solar controller should have street lamp control functions, with light control and time control functions, and should have the ability to automatically cut and control the load at night, so that it can extend the working time of street lamps in rainy and rainy days.
4. Battery
Because the input energy of the solar photovoltaic power generation system is extremely unstable, it is generally necessary to configure a 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, on the premise that it can meet the lighting at night, store the energy of solar cell components during the day as much as possible, and at the same time, it must be able to store the electrical energy that can meet the lighting needs of continuous rainy days at night. The battery capacity is too small to meet the needs of night lighting. The battery is too large. On the one hand, the battery is always in a state of power loss, which affects the battery life and causes waste. The storage battery should match the solar battery and the electric load (street lamp). A simple method can be used to determine the relationship between them. The solar cell power must be more than 4 times higher than the load power for the system to work normally. The voltage of the solar cell must exceed the working voltage of the storage battery by 20-30% to ensure the normal negative charge to the storage battery. The battery capacity must be more than 6 times the daily consumption of the load. We recommend the use of gel batteries for the choice of batteries, which have a long service life and are more environmentally friendly.
5, light source
The light source used by the solar street lamp is an important indicator of whether the solar lamp can be used normally. Generally, the solar lamp uses low-voltage energy-saving lamps, low-voltage nano lamps, electrodeless lamps, and LED light sources.
(1) Low-voltage energy-saving lamps: low power, high luminous efficiency, but 2000 hours of service life, low-voltage lamps are black, generally suitable for solar lawn lamps and garden lamps.
(2) Low-pressure sodium lamp: Low-pressure sodium lamp has high lighting efficiency (up to 200Lm/w) and is less used.
(3) Induction lamp: low power and high luminous efficiency. The lamp is used under normal commercial power conditions of 22V (pure sine wave, frequency 50 Hz), and the service life can reach 50,000 hours. The service life on solar lamps is greatly reduced as that of ordinary energy-saving lamps (because solar lamps are square wave inverse meters The inverter, solar power 220V output frequency, item position, and voltage are not comparable to ordinary commercial power.
(4) LED: LED light source, long life, up to 1,000,000 hours, low working voltage, no inverter, high luminous efficiency, domestic 50Lm/w, imported 80Lm/w, with technological progress, the performance of LED Will be further improved. LED as the light source of solar street lights will be a trend.
6. Light pole and lamp housing
The height of the light pole should be determined according to the width of the road, the distance between the lamps and the illuminance standard of the road. Lamp shell according to our tungsten collection of many foreign solar lamp information, between the beautiful shell and energy saving, most of them choose energy saving, the appearance of the lamp is not demanding, and it is relatively practical.
