Design of Power Supply for RGB LED Based Lamp Source

Shetty, Divya and Padiyar, Harish U (2013) Design of Power Supply for RGB LED Based Lamp Source. In: National Conference on Advances in Energy Conversion Technology, 07/02/2013, Manipal Institute of Technology,Manipal..

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Abstract

LED lighting clearly offers an eco-friendly alternative to energy-wasting conventional lighting. RGB LED lighting fixtures offer endless colour changing possibilities to enhance our environment. The forward characteristics of Red, Green and Blue LED’s indicate the region of control to produce acceptable level of light intensities. As the intensity of light produced by an LED is proportional to its forward current, a suitable region is identified to obtain distinctive colors and to explore the energy saving options. The objective of the paper was to provide a suitable control for dimming in the linear region as well as in the nonlinear region of the diode graph. The RGB LEDs have been powered from three push pull converters. Different control methods have been explored and simulated in PSPICE to switch the LEDs as to produce distinctive colors .Every method seems to have its pros and cons. Eventually Voltage mode control is adopted to provide control over the entire region of the diode graph which includes both linear and nonlinear regions which will serve the purpose of dimming. Accordingly a multi-colored lamp source using RGB LEDs has been designed and the hardware has been developed.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: RGB LEDs, Dimming, PushPull Converter,Voltage Mode control
Subjects: Engineering > MIT Manipal > Electrical and Electronics
Depositing User: MIT Library
Date Deposited: 30 Jan 2017 13:28
Last Modified: 30 Jan 2017 13:28
URI: http://eprints.manipal.edu/id/eprint/148229

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