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  • solar street lights failure and the reasons 2018-01-29
    solar street lights failure and the reasons

    Solar street lights, that is, on the basis of lighting, using a new supply of solar energy only. But want to adopt the new energy supply, solar panels, batteries, solar charge controller, these components are essential. As we all know, the more simple things, the less failure, and solar street lights are more than three key components, the failure of light than the average will be more. 1. the whole light is not bright Solar street light is used for outdoor lighting, so it will often encounter high temperature and rainy, cold weather and other environments, and solar street light controller is usually installed in the light pole, easily lead to water short to the controller. First of all, observe if there is rust on the controller's terminal. If so, the controller may be damaged, no need to measure the battery voltage. If the voltage of the battery is less than 10.8V, the battery will not be charged. Need to change new one. Re-check solar panel under this working conditions whether the voltage and current has output. If not, that means the solar panel is damaged, need to replace. 2, lamp flashing        This failure may be due to poor line contact, battery power loss, a serious decline in storage capacity, if the line is no problem, the need to replace the battery. 3, light a short time        If the rainy days duration is short. Storage capacity is generally decreased battery, storage battery caused by insufficient electricity. Replace the battery can be. 4, solar lights incomplete light        Now a lot of solar street lamp adopt dot-matrix LED light source, in addition to the quality of LED light source itself, there are some lamp bead Weld will cause this situation. The solution is to replace the corresponding lamp beads, welded firmly or replace the entire lamp head.        If the location of the installation of the sun's lack of light, make the overall configuration of the lamp unreasonable, can easily lead to serious shorten the life of solar street lights. Should choose the strong sunlight environment to install, reasonable allocation of solar street light system.

  • MPPT Algorithm Analysis 2018-01-26
    MPPT Algorithm Analysis

    The diagram below shows the volt ampere curve and power curve of solar panel. It can be seen that as the voltage increases, the current always decreases, and the power has the maximum value. MPPT algorithm analysis 1.MPPT overview below is the volt ampere curve and power curve of solar panel. It can be seen that as the voltage increases, the current will always decrease, and the power has the maximum value. The optimal working point for solar panels is called the maximum power point, which depends on the working temperature of the panels and the level of light at that time. Under different temperature and light intensity of different maximum power point of solar panels, to make the maximum power point of solar panels as much as possible to work in, you need to use the photovoltaic maximum power tracking, MPPT technology implementation of the most important thing is to find suitable MPPT control algorithm, can effectively in a rapidly changing weather conditions to track the maximum power point, control panels, work as much as possible on the maximum power point. MPPT has many algorithms, such as constant pressure tracking, incremental conductance and interference observation, etc. (1) Constant pressure tracking method: From the picture above you can see, when the temperature is, the maximum power point of solar panels under different light intensity almost fell on both sides of the same root vertical line nearby, it's likely to approximate maximum power line as a constant voltage V a vertical line, make the photovoltaic panels in a fixed voltage. The constant pressure tracing method is an approximate maximum power tracking method. Constant pressure tracking method has certain power loss. In particular, when the temperature changes, the open circuit voltage of the solar panel changes, while the voltage of the constant voltage tracking method is a constant value, so the tracking efficiency is not high. (2) Incremental conductance method. The conductance increment method outputs the control signal by comparing the conductance increment and the instantaneous conductivity of the solar panel. The working voltage of the solar panel should be increased to reach the maximum power point when the electric conductivity increment of the solar panel and the instantaneous conductivity are greater than 0.When the electric conductivity of the solar panel and the instantaneous conductivity are less than 0, the working voltage of the solar panel should be reduced to reach the maximum power point. The electric conduction increment method is accurate and the response speed is fast, which is suitable for the situation where atmospheric conditions change quickly. However, the requirements of hardware, especially the precision of the sensor, are relatively high, and the response speed of each part of the system is relatively fast, so the hardware cost of the whole system is also high. (3) Interference observation method: The interferometer method is to realize MPPT by c...

  • The trend of integrated solar street light 2018-01-03
    The trend of integrated solar street light

    With the national new energy-saving environmental protection social recommendation, solar street lights gradually replace the city lights, this energy-saving products are very subject to people's attention, and with the development of solar street lights, integrated solar street lights are gradually being well-known, What is the integrated solar street light? It’s relative to the split solar street light, just put the battery, batteries, solar street light controller, LED light source into one, made of a lamp, and then configure the pole or pick the arm installation. What are the advantages of integrated solar street lights? This lamp is to install more convenient, it can be said to be a fool-type installation, if you can use the screw then you can installation, eliminating the need for the traditional split solar street lights need to install the battery bracket, lamp holder installation, production of battery pit and other steps, saving labor costs and construction costs. In addition, the integrated solar street lights also has the following advantages: 1.energy-saving: solar energy to provide electricity conversion, inexhaustible; 2. environmental protection: no pollution, no noise, no radiation; 3.security: no electric shock, fire and other accidents; 4.convenient: easy to install, do not need to wire or belly dig construction, power outage no worry; 5.long life: high technology products, control systems, accessories are international brands, intelligent design, reliable quality; 6.high grade: technology products, green energy, the use of units emphasis on science and technology, improve the green image, improve the grade; 7.less investment: one-time investment and exchange equivalent (AC investment from substation, into the power, control box, cable, engineering), an investment, long-term use; 8.Widely used: Solar energy comes from nature, so it can be used in any place with sunshine, especially for green landscape lamp, residential and outdoor lighting, coastal landscape lighting and decoration of tourist attractions, industrial development zone, street lighting for industrial and mining enterprises, Major institutions outdoor lighting

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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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