Design of Power Supply for RGB LED Based Lamp Source

 
 
 
  • Abstract
  • Keywords
  • References
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  • Abstract


    LED lighting is replacing the conventional lighting system at a very fast pace. RGB LED lighting fixtures offer convenient options of color changes 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.

     

     

     

  • Keywords


    RGB LEDs, Dimming, Push Pull Converter, Voltage Mode control.

  • References


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      [10] Ned Mohan, Tore M. Undeland and William P. Robbins, “Power Electronics- Converters, Applications, and Design”, John Wiley & Sons, Second Edition, ISBN 9971-51-177-0

      [11] Sameer Ram Pujari “Application of Push Pull Converter for RGB LED based Commercial Lighting Systems”, PESC, MIT, M.Tech Thesis 2011

      [12] Ragasudha, “Design and Development of Energy Efficient Multicoloured LED Lamp Source Using RGB LED’s”, PESC, MIT, M.Tech Thesis 2010

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      [14] Steve Winder, “Power Supplies LED for Driving”, Elsevier Newness Publications, ISBN 978-0-7506-8341-8


 

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Article ID: 24300
 
DOI: 10.14419/ijet.v7i4.41.24300




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