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濟南圍擋:如何提高LED驅動器可靠性?

作者: 點擊數: 時間:2017-03-02 10:37:39

行業LED驅動器可靠性低下的原因主要有以下幾點:
The reasons for the low reliability of the industry LED drives are the following:
榜首、挨近熱源。
The top, near the heat source.
led盡管發光功率較高,但流過LED的能量仍只要小部分能量能夠見光的形式輻射出去,其他大多數能量以熱的形式耗費在LED中,因而LED光源本身發熱比較嚴重。LED驅動器一般放置在燈具內部,挨近LED光源,在大環境溫度只要20-30℃的常溫下,驅動器周圍的環境溫度就很簡單到達50-60℃,在如此高的環溫下要保證驅動器的可靠性,對規劃(尤其是功率指標)具有很大的挑戰性。
Led although the luminous power is higher, but the energy flowing through the LED still as long as the radiation in the form of small part of energy can see the light out, most of the other in the form of heat energy consumption in LED, so the LED light source is more serious fever. The LED drive is usually placed on the inside of the light fixture, near the LED light source, at ambient temperature as long as 20-30 DEG C under normal temperature, drive the ambient temperature is very simple at 50-60 DEG C, in such a high temperature to ensure the reliability of the driver, the planning (especially power index) is a great challenge.
第二、長期滿負荷作業。
Second, long-term full load operation.
在不調光的情況下LED驅動器即是挨近滿負荷作業,而在開關電源的絕大多數應用領域,如計算機電源(適配器)、通訊電源、家用電器等,長期作業的平均功率一般只要額定功率功率幾分之一,一切負載都敞開的滿功率狀況只在特定的少數時間內會出現。
In the case of LED dimming driver is close to full load operation, and in most applications such as switching power supply, computer power supply (adapter), communication power supply and electrical household appliances, the long-term average of the power operation in general as long as a fraction of rated power power, all loads are open full power status will appear in a few hours in particular.
第三、對于路途、廣場等室外照明場合,簡單遭受外界雷擊等自然現象損壞。這些都將會對LED半導體照明的大規模應用造成后期維護等系列弊端。
Third, for roads, squares and other outdoor lighting occasions, simply suffer from natural phenomena such as lightning damage. These will be on the LED semiconductor lighting large-scale applications caused by late maintenance and other drawbacks.
LED驅動電源的高可靠性是LED產品質量的重要條件,一起也是亟待攻破的技能難題。
LED drive power supply reliability is an important condition for the quality of LED products, is also an urgent need to break the technical problems.

 

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