How to choose high-power LED street lamp power supply?
As the light source of street lights, LED has many advantages compared with traditional light sources, such as long life, good seismic performance, adjustable brightness, low luminous flux loss, luminous directivity, and no harm to the environment. Today, more than a dozen series of nearly one hundred two-stage drive isolated high-power LED street lamp power products have been launched. Based on the two-stage drive scheme, the entire series of single-channel, multiple-channel output constant voltage and constant current integrated isolated waterproof LEDs have been officially launched The volume of street lamp power module products has remained unchanged, and mass production has been achieved.
1. High-quality components
LED street lights are mainly used in outdoor environments. They have to withstand the harsh environment of wind, rain, thunder and lightning for many years. The highest outside temperature can reach 50°C, and the lowest temperature may reach -40°C. LED light source is a semiconductor light source, its own light-emitting characteristics determine its failure rate is quite low, and the failure rate of the connection part is also quite low, so the quality of the LED drive power directly determines the life of the entire street lamp, and it is also the core of the LED street lamp industry. part.
Good design is one of the elements of the quality of the power supply, and the power supply component is the prerequisite for high reliability. At present, the key components in the power supply are still some passive components and power components, such as capacitors, inductors, MOS, etc.
Second, the price
Although the price is not the final deciding factor in this quality-first product market, a higher cost performance with good quality can provide street lamp manufacturers with more profit margins and competitive advantages.
3. Design margin
At present, the application environment of LED street lights sold in the domestic market is very complicated. The main reason is that the power supply voltage is unstable. In the case of ordinary mains power supply, the actual input voltage often has a large deviation and various surges. Unsafe factors such as wave impact always affect the normal operation of the LED power supply, which requires a certain design margin for the power supply.
Four, lightning protection
LED street lights are installed outdoors, lightning strikes are a very big threat. Through years of research, the CLP China Star Technology R&D Laboratory has concluded that there are four main types of lightning strikes: direct lightning, conducted lightning, induced lightning, and switching overvoltage. Inductive lightning has the greatest impact on power equipment, which may produce up to 5000KV or even higher. The voltage is extremely destructive.
Five, energy saving and high efficiency
As we all know, the LED street light project is the representative project of the current national energy saving and emission reduction project. In the light-emitting components, the characteristics of the LED itself have achieved very good energy-saving effects, but the power-saving energy has been ignored by major manufacturers. Therefore, the energy-saving power supply will undoubtedly be the most important part of the street lamp power supply in the future.
Today, more than a dozen series of nearly one hundred two-stage drive isolated high-power LED street lamp power products have been launched. Based on the two-stage drive scheme, the entire series of single-channel, multiple-channel output constant voltage and constant current integrated isolated waterproof LEDs have been officially launched The volume of street lamp power module products has remained unchanged, and mass production has been achieved.
