Active thermal management of High Power LED Vellore Inst. of Technology

Format:

Book

Conference/Event

Author/Creator:

A, Rammohan, author.

Contributor:

Chidambaram, Ramesh

Conference Name:

Symposium on International Automotive Technology (2021-09-29 : Pune, India)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Technology improving on a daily base, the innovating structures and development of LED'S hasled to dramatic improvements of the performance in LED technology. Replacing incandescentlights and CFLs clearly concludes the character of the LED. Producing high lumen output andefficiency has been the greatest advantage. Every industry including automobile is slowly shiftingfrom halogen lamps to LED lamps. LED producing localized heat and maintaining the junctiontemperature for maximum lumen output range causing failure of LED has been the greatest hurdlefor the engineers. Researches carried out in order to minimize the disadvantages are the main focusin lighting industry. In traditional methods, Thermal management of LED's are done by passivecooling of LED using heat sinks and fluids such as coolant based heat sink model. The projectgives emphasis on active cooling of an array of LED (CREE CXB1816) considering various realtime parameters such as junction temperature, ambient temperature, heat sink temperature andavailability of electrical power from power supply or battery source. Also the project deals with theefficiency and efficacy factor of the CREE CXB1816 LED using integrating sphere which givesvaluable input for the LED arrays to maintain at the maximum lumen output. The LED experiencesactive cooling with the help of the feedback system loop controlling the junction temperature byvarying the fan speed based on the heat sink temperature sensor. The simulation analysis usingANSYS was used to validate the thermal behaviour of the LED and the heat sink theoretically. Theresult shows a maximum of 16.667% reduction in operating temperature, maximum of 5.69%increase in light output from integrating sphere

Notes:

Vendor supplied data

Publisher Number:

2021-26-0133

Access Restriction:

Restricted for use by site license