Searched for: subject:"LED%5C+Lamp"
(1 - 4 of 4)
document
Sun, B (author), Fan, Xuejun (author), van Driel, W.D. (author), Cui, C (author), Zhang, G.Q. (author)
In this study, we present a general methodology that combines the reliability theory with physics of failure for reliability prediction of an LED driver. More specifically, an integrated LED lamp, which includes an LED light source with statistical distribution of luminous flux, and a driver with a few critical components, is considered. The...
journal article 2018
document
Sun, B. (author), Fan, J. (author), Fan, Xuejun (author), Zhang, G.Q. (author)
This work studies the effect of randomness of LED's lumen depreciation on reliability of the entire LED lamp. An integrated LED light bulb is selected as carrier of the proposed method. A PoF based lumen depreciation model and electronic-thermal simulations are introduced for reliability prediction. The normal distribution is used to describe...
conference paper 2018
document
Sun, B. (author)
Light-Emitting Diodes (LEDs) have become a very promising alternative lighting source with the main advantages of a longer lifetime and a higher efficiency than traditional ones. However, the LED lamp’s lifetime is compromised by its driver’s reliability. Although extensive studies have been made on the reliability of LEDs, the research on the...
doctoral thesis 2017
document
Sun, B. (author), Fan, Xuejun (author), Li, Lei (author), Ye, H. (author), van Driel, W.D. (author), Zhang, G.Q. (author)
This paper studies the interaction of catastrophic failure of the driver and LED luminous flux decay for an integrated LED lamp with an electrolytic capacitor-free LED driver. Electronic thermal simulations are utilized to obtain the lamp's dynamic history of temperature and current for two distinct operation modes: constant current mode (CCM...
journal article 2017
Searched for: subject:"LED%5C+Lamp"
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