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  • How to choose solar panel specifications for solar street project 2017-11-16
    How to choose solar panel specifications for solar street project

    In a solar street lamp system, the solar panel specifications determines the quality of the street light directly. Some of the common street lamp failure, such as lack of lighting time, charging abnormalities, and even solar street lamp system damage are related with the specifications of solar panels. Here's how to choose the solar panel specifications for analysis: 1. Solar panels must choose the correct open circuit voltage and operating voltage If you choose the PWM solar charge controller, to 12 V storage charge, the open circuit voltage is generally about 20V, the operating voltage is generally 17.5V. If the 24V battery charge, open circuit voltage and operating voltage of 12V twice. If the MPPT solar controller is selected, the open circuit voltage of the solar panel can not exceed the maximum input voltage of the controller. 2. Solar panel power selection Solar panel power selection, according to the following company calculations: P = Q * h / U * ξ1 / ξ2 / ξ3 * Vp Description: Q-- load power H - load day use time U - system voltage ξ1 - the number of integrated solar system, take 1.05 ξ2 - control circuit efficiency, take 0.85 ξ3 - battery charge and discharge efficiency, take 0.85 Vp - solar panel voltage. 3. Solar panel types, Single crystal and Polycrystalline Single crystal solar panels more efficient, light fades smaller, but the price a little more expensive Polycrystalline solar panels relatively low efficiency, but the price is cheap 4. Solar panel dimensions Dimensions has a lot of size, which size is more appropriate, this is determined by their own street lighting installation environment, in general, the same power, choose a smaller size is more appropriate. 5 other manufacturing processes Including the thickness of the aluminum frame, the transparency of glass, sealant is uniform, packaging and transportation

  • UK Solar Energy Situation 2017-11-04
    UK Solar Energy Situation

    UK solar energy situation Britain wants to reach the EU goal and gradually shut down coal-fired power plants, it is getting more and more energy from renewable sources, such as wind and solar energy. In addition to solar energy, nuclear energy accounts for 23% of the total electricity generation in the UK, 30% of natural gas, and 1.4% of thermal power.  There are also wind power, hydropower, biofuel power generation. However, environmentalists complained of cuts in government subsidies decision of the solar power industry. Hanna Martin, director of the Hannah project in the UK, pointed out: "because of the low cost of solar energy and high power generation, the global solar energy industry is constantly updating the power generation record of Greenpeace.".  In 2016, the proportion of thermal power generation in the UK dropped from 23% in 2015 to 9% in the year; the British government hopes to shut down all thermal power plants by 2025.

  • What factors need to be considered for choosing a solar street light controller 2017-11-02
    What factors need to be considered for choosing a solar street light controller

    With the development of national new energy strategy, solar street lights are more and more applications, widely used in rural areas, scenic spots and other applications. There are a wide variety of solar street light controllers in the market. What factors need to be considered for choosing a solar street light controller? 1. The output type of the controller. Currently ,the solar street light controller output voltage in the market is generally divided into three categories:Step-up constant-current controller with LED lamp driver, general output controller, step-down constant current controller with LED driver. which one to choose, according to the user to use the LED light type to determine. If the LED lights without a drive, you must select the controller with LED light drive, according to the number of LE lamp beads arranged to select the boost or buck type of solar charge and discharge controller. If the LED lights with drive, you only need the normal output of the controller. Note: The normal output of the controller that means the controller output voltage is equal to the battery voltage. 2. The voltage of the battery. The current solar street lamp battery voltage is generally divided into 12V or 24V. General low-power LED lights to choose 12V battery (<50W), the high power of the street lights to choose 24V, which can effectively reduce the line loss, of course, the battery voltage specifications also with the solar panel and load a relationship. If the solar panels and LED lights have been identified, then the battery specifications must also be suitable for their specifications. 3. If the solar street light controller load mode is able to meet customer design requirements. Now the street lamp controller operating mode are generally: pure light control, light control + time control, manual mode. Different controllers have some differences and must be carefully confirmed. 4. Maximum load output power You must confirm that the user's LED power can not exceed the maximum output power of the controller. Power is too large to cause overload protection or overheating 5. Street lamp work mode settings,. Generally set the button or infrared remote control settings, according to the user's actual requests to choose 6.Appearance requirements. Street lamp controller installed in the outdoors, and is all-weather work, must have a moisture, water, corrosion resistance, the current mainstream aluminum alloy shell, the internal perfusion treatment.

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Anhui JNGE Power Co., Ltd. is located in high tech zone, Hefei City, Anhui Province. Hefei is also called Technology City. Our company is a leading manufacturer for solar, wind and other renewable energy products. We have a complete set of R & D, production, sales and service systems. Our factory produce off grid pure sine wave inv...

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