2013年5月31日星期五

Solar LED Lighting Introduction


Today's world, oil, coal, natural gas and other major energy resource depletion are facing the danger, while also increasing environmental pressures, therefore, environmental protection, energy conservation has become a worldwide businesses strive for the goal.
Solar energy is a clean, green energy, semiconductor light-emitting diode (LED) is an environmentally friendly, energy efficient solid-state light source. Solar energy as on Earth truly inexhaustible supply of clean energy, will be the next best new green energy, at present its use is an effective way to use photovoltaic technology to convert solar energy into electrical energy. LED is a capable electrical energy into visible light semiconductor devices, by virtue of its non-polluting energy saving features have been used in many sectors of the lighting field, so integrated solar photovoltaic and LED solid-state lighting advantages of solar LED high bay light systems to achieve a generation of new sources of energy and the perfect combination.
1 solar photovoltaic power generation principle:
Solar power is a solar cell module, using the electronic characteristic of the semiconductor material, the sunlight when the PN junction in a semiconductor, the P-N junction barrier zone produced a strong built-in electrostatic field, resulting in a potential barrier zone or the non-equilibrium electrons and holes generated outside the barrier but the potential barrier region diffused into the non-equilibrium electrons and holes, the built-in under the action of the electrostatic field, each moving in the opposite direction, leaving the potential barrier region, Results rise in potential of the P region, N-area potential reduced, thus the external voltage and current generated in the circuit, the light energy into electrical energy.
Solar photovoltaic systems can be divided into two categories, one is the grid system, namely the utility grid and is connected through a standard interface, such as a small power plant; another is independent of the power generation system, namely in their own closed circuit is formed within the system. And power generation system through the PV array to the received solar radiation energy through conversion into a high frequency DC current, through the inverter to the grid after the inverter output frequency with the grid voltage, phase sinusoidal AC current. The stand-alone photovoltaic array power system will first receives solar radiation energy directly into electrical energy supplied to the load, and the excess energy through the charge controller to the form of chemical energy stored in the battery.
2. LED lighting technology features:
An LED is a P-N junction in the forward current is applied to emit ultraviolet light, visible light, infrared light, a semiconductor solid-state light-emitting device. Its light emission mechanism is the core of P-N junction, when the applied forward voltage, P-N junction balance is broken, P District holes into the P-N junction and in the original part of the anion, N electrons into the P-region N junction and in a part of the original positive ions, thus making the P-N junction is narrowed, since the electric field applied field was reduced P-N junction, causing the reduction of electrical potential to reduce the potential energy is converted to electromagnetic energy, photon form of release. More energy electron reduction, the higher photon energy release.
LED semiconductor lighting source in addition to a long life, high luminous efficiency, small size, light weight, environmentally safe and reliable, there is a significant advantage is the starting voltage and the LED working voltage, so without the use of ballasts. Such savings in cost and energy consumption, but also greatly reduce the response time of the pass off.
3 The combination of solar energy and LED lighting
Solar photovoltaic and LED lighting technology is the key to the perfect combination of both with direct current, low voltage and can match each other. Therefore, the combination does not require direct current generated by solar cells into alternating current, thus greatly improving the overall efficiency of lighting systems. At the same time, by means of the use of grid technology or battery charge and discharge energy to make it more obvious advantages. With the in-depth study related technologies, LED luminous efficiency is increasing, high brightness LED going to come out, is bound to replace general lighting electric light, and significant energy savings and pollution.
Solar LED lighting products is a new generation of green lighting products, its main components include solar photovoltaic (PV technology) and semiconductor lighting (LED).
At present, solar lighting products, though there have been some manufacturers to develop products, and put into practical application, but because of LED power, its use is very restricted. With the high brightness LED high bay light efficiency rapidly increasing environmental awareness as well as people continue to strengthen energy, solar lighting products will play its zero-energy, non-polluting characteristics, and its applications will continue to expand.
Green energy and sustainable development issues facing humanity this century is a major issue, as well as the development of new energy sources fully rational use of existing energy governments have been highly valued. At present, solar energy utilization technology and semiconductor lighting industry has the technology to develop new period began entering the commercialization stage, involving products include street lighting, traffic signals, landscape lighting, garden decoration. It is foreseeable that sets a new generation of solar energy and new light semiconductor lighting industry will be rapid development and sparked a new era of green lighting.

More info you can visit:www.lead-lighting.com

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