An extra low voltage DC (ELVDC) power distribution for LED lighting system

Abstract

With the technology roadmap of LED moving towards high efficacy low power LEDs, the current AC distribution system suffers from system inefficiency. An energy efficient ELVDC power distribution for LED lighting system is proposed. The different design considerations affecting the inherent higher voltage drop at ELVDC level are discussed in this paper. Simulations are presented in the context of a lighting system running through the stairwell of a high rise built environment and are extended to a LED lighting system of an office context environment. It has been presented that the use of an ELVDC power distributed LED lighting system is highly efficient when integrated together with DC energy sources.