TY - JOUR
T1 - Development of high-performance solar LED lighting system
AU - Huang, B.J.
AU - Wu, M.S.
AU - Hsu, P.C.
AU - Chen, J.W.
AU - Chen, K.Y.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUK-C1-014-12
Acknowledgements: This publication is based on the work supported in part by Award No. KUK-C1-014-12, made by King Abdullah University of Science and Technology (KAUST) and the Project No. 97-D0137-1 made by Energy Bureau, Ministry of Economic Affairs, Taiwan.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2010/8
Y1 - 2010/8
N2 - The present study developed a high-performance charge/discharge controller for stand-alone solar LED lighting system by incorporating an nMPPO system design, a PWM battery charge control, and a PWM battery discharge control to directly drive the LED. The MPPT controller can then be removed from the stand-alone solar system and the charged capacity of the battery increases 9.7%. For LED driven by PWM current directly from battery, a reliability test for the light decay of LED lamps was performed continuously for 13,200 h. It has shown that the light decay of PWM-driven LED is the same as that of constant-current driven LED. The switching energy loss of the MOSFET in the PWM battery discharge control is less than 1%. Three solar-powered LED lighting systems (18 W, 100 W and 150 W LED) were designed and built. The long-term outdoor field test results have shown that the system performance is satisfactory with the control system developed in the present study. The loss of load probability for the 18 W solar LED system is 14.1% in winter and zero in summer. For the 100 W solar LED system, the loss of load probability is 3.6% in spring. © 2009 Elsevier Ltd. All rights reserved.
AB - The present study developed a high-performance charge/discharge controller for stand-alone solar LED lighting system by incorporating an nMPPO system design, a PWM battery charge control, and a PWM battery discharge control to directly drive the LED. The MPPT controller can then be removed from the stand-alone solar system and the charged capacity of the battery increases 9.7%. For LED driven by PWM current directly from battery, a reliability test for the light decay of LED lamps was performed continuously for 13,200 h. It has shown that the light decay of PWM-driven LED is the same as that of constant-current driven LED. The switching energy loss of the MOSFET in the PWM battery discharge control is less than 1%. Three solar-powered LED lighting systems (18 W, 100 W and 150 W LED) were designed and built. The long-term outdoor field test results have shown that the system performance is satisfactory with the control system developed in the present study. The loss of load probability for the 18 W solar LED system is 14.1% in winter and zero in summer. For the 100 W solar LED system, the loss of load probability is 3.6% in spring. © 2009 Elsevier Ltd. All rights reserved.
UR - http://hdl.handle.net/10754/597962
UR - https://linkinghub.elsevier.com/retrieve/pii/S0196890409004968
UR - http://www.scopus.com/inward/record.url?scp=77951252928&partnerID=8YFLogxK
U2 - 10.1016/j.enconman.2009.11.046
DO - 10.1016/j.enconman.2009.11.046
M3 - Article
SN - 0196-8904
VL - 51
SP - 1669
EP - 1675
JO - Energy Conversion and Management
JF - Energy Conversion and Management
IS - 8
ER -