Thermal analysis of an 80 W light-emitting diode street lamp

Luo, Xiaobing; Cheng, Ting; Xiong, Wei; Gan, Zhiyin; Liu, S.

doi:10.1049/iet-opt:20070006

Cited by 50 publications

(29 citation statements)

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“…Even after about 3 hours the temperature was still increasing. 21 This fact could be the reason for the decreasing tendency in the LED active power.…”

Section: Experiments With Led Street Lampmentioning

confidence: 99%

LED street lighting: A power quality comparison among street light technologies

Gil-de-Castro

Moreno-Munoz

Larsson

et al. 2012

Lighting Research & Technology

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High-pressure sodium lamps are currently the main lamps used in public lighting. However, the possibility of using high-power light emitting diode (LEDs) for street lighting is growing continuously due to their greater energy efficiency, robustness, long life and light control. The aim of this paper is to study the power quality of high-power lighting networks based on LED and high-pressure sodium lamps. Both electromagnetic and dimmable electronic ballasts, which can dim the lamp output smoothly and uniformly, have been used connected to high-pressure sodium lamps. High-pressure sodium lamps connected to electronic equipment have been tested with different arc power levels using dimming on a 230 V power supply. The study presented in this paper is completely based on measurements, including harmonic currents in the frequency range up to 150 kHz for all the technologies. The main results show a broadband spectrum in LED lamps which confirms other research in Fuorescent lamps powered by high-frequency ballasts. Results also indicate a decrease in the harmonic value with increasing harmonic order, and a decrease in the harmonic value at half load (60%) compared with full load (100%). Although total harmonic distortion of the current is lower with highpressure sodium lamps connected to electronic rather than electromagnetic ballasts, LED lamps achieved the lowest total harmonic distortion of current.

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“…Even after about 3 hours the temperature was still increasing. 21 This fact could be the reason for the decreasing tendency in the LED active power.…”

Section: Experiments With Led Street Lampmentioning

confidence: 99%

LED street lighting: A power quality comparison among street light technologies

Gil-de-Castro

Moreno-Munoz

Larsson

et al. 2012

Lighting Research & Technology

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“…1 have been conducted in the authors' previous work [2]. The lamp is mainly composed of three parts: twenty highpower LED modules, a mechanical frame for heat dissipation and supporting LED modules.…”

Section: Temperature Calculation Of An 80w Led Street Lampmentioning

confidence: 99%

“…In the near future, the biggest area that LED will be used in is general lighting. In energy shortage condition, Chinese authorities estimate that if LEDs dominate the lighting market in 2010, one third of the present lighting power consumption will be saved, which will greatly ameliorate the energy crisis in China [2].…”

Section: Introductionmentioning

confidence: 99%

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Thermal analysis and optimization of multiple LED packaging based on a general analytical solution

Cheng

Luo

Huang

et al. 2010

International Journal of Thermal Sciences

149

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“…It can be calculated from the temperature of the LED module and the thermal resistance of the LED junction (obtained in the manufacturer's datasheet); calculated by shifting the direct voltage changes over the component; and direct measurements of the temperature of the LED via thermocouple or infrared images [24]. There are many works that present analyses of thermal dissipation of HP-LED lamps and luminaires using finite element method (FEM) software [25][26][27][28][29]. A thermal and luminous analysis of a luminaire composed of three LEDs of 1 W is presented in [30]; however, there are not many works that evaluate the thermal heat dissipation and also the illumination quality generated by an HP-LED luminaire.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of a High Power LED Matrix Luminaire

2017

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This work presents a methodology for optimizing the layout and geometry of an m × n high power (HP) light emitting diode (LED) luminaire. Two simulators are used to analyze an LED luminaire model. The first simulator uses the finite element method (FEM) to analyze the thermal dissipation, and the second simulator uses the ray tracing method for lighting analysis. The thermal and lighting analysis of the luminaire model is validated with an error of less than 10%. The goal of the optimization process is to find a solution that satisfies both thermal dissipation and light efficiency. The optimization goal is to keep the LED temperature at an acceptable level while still obtaining uniform illumination on a target plane. Even though no optical accessories or active cooling systems are used in the model, the results demonstrate that it is possible to obtain satisfactory results even with a limited number of parameters. The optimization results show that it is possible to design luminaires with 4, 6 and up to 8 HP-LEDs, keeping the LED temperature at about 100 • C. However, the best uniformity on a target plane was found by the heuristic algorithm.

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Thermal analysis of an 80 W light-emitting diode street lamp

Cited by 50 publications

References 1 publication

LED street lighting: A power quality comparison among street light technologies

LED street lighting: A power quality comparison among street light technologies

Thermal analysis and optimization of multiple LED packaging based on a general analytical solution

Design Optimization of a High Power LED Matrix Luminaire

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