Energy conservation has always been a global concern, and the energy consumption of lighting, which accounts for about 19-20% of the global total energy consumption, can fully achieve the advantages of both power saving and long life if LED light source can be used. Therefore, the LED lighting market has mushroomed in recent years, and has rapidly replaced various traditional lighting sources in various applications such as home, industrial, commercial space lighting, street lamps, car lights, and plant factories, and has become the government of the world to promote energy conservation. The most important direction in the carbon reduction policy. Mingwei LED drive power life Led Flat Par Can ,Battery Pack,Lithium Ion Battery Pack,Power Can Light Wuxi Shengda Yukun Energy Development co.,Ltd , https://www.xlite-solarlight.com
The role of electrolytic capacitors in LED drive power
Electrolytic capacitors in the application of isolated LED drive power, roughly distinguish between primary capacitance (Cp) and secondary capacitance (Cs), have energy storage and filtering. In addition to absorbing lightning energy and preventing flashing caused by power transients, Cp also has the effect of reducing EMI. Cs is mainly filtered on the output side, which can reduce the output low-frequency current ripple and improve the stroboscopic phenomenon. At present, the low-power LED driving power source commonly used in the market usually adopts a single-stage Flyback or PSR architecture without Cp in order to pass the regulatory requirements of the power factor and the harmonic current and the low-cost requirement, and the circuit is omitted because the Cp is omitted on the circuit. The test needs to add additional countermeasure parts; and the output of high and low frequency ripple will not meet the requirements of low flicker (low frequency luminous flux change ratio below 8%).
LED lamp life factor
The key factors affecting the life of LED lamps are nothing more than the electrolytic capacitors used in the light source and the driving power source, both of which are directly related to temperature. The current commercial lamps indicate the life of the lamps, ranging from 15,000 hours to 50,000 hours. According to the LED manufacturer, the average life of the high-power LEDs is estimated based on the test results of LM-80 or TM-21, which is about 5 Ten thousand hours, the picture shows Cree's LED life test and calculation example. The life of the LED driver depends on the grade and temperature of the electrolytic capacitor chosen for the design. It should not be lower than the lifetime of the LED. It is a reasonable design choice. 
Aluminum electrolytic capacitor design LED drive power solution, can be "long life"
The LED lighting market has mushroomed in recent years, in various applications such as home, industrial, commercial space lighting, street lamps, car lights, plant factories, etc.