A centralised DC power supply solution for LED lighting networks

Abstract

In the context of the FP7 CIP-ICT Programme, the EDISON project 1 has the ambitious goal to introduce a new way of thinking lighting networks in buildings, for both retrofitting actions and new constructions. It proposes an innovative ICT-based solution for lighting infrastructure that aims to improve power efficiency, reduce CO 2 emissions and encourage the use of small-scale renewable energy sources in public and private buildings. In particular, this paper focuses on a relevant aspect of the EDISON solution: the centralization of DC power supply in a LED lighting infrastructure. To this aim, a short analysis has been carried out in order to give evidence of the benefits arising from the application of this approach. Finally, preliminary results achieved in targeted Pilot actions, implemented in different European countries, have been reported.

A Techno-Economic Analysis to Compare Low Voltage DC with AC Grids for LED Lighting

“…As such, a choice can be made between LVAC or LVDC in the planning of the local electrical grid. Some studies have shown that a centralized rectification can be beneficial for DC loads (such as LED lighting) [5]- [7]. However, to the best knowledge of the authors, a systematic approach and tool for this choice does not exist.…”

DC Grids for Smart LED-Based Lighting: The EDISON Solution

“…The paper discusses the different solutions for integrating an intelligent control system in the lighting infrastructure to be able to automatically dim or switch on or off the lamps based on user presence (or user's preferences) and on the availability of daylight scavenging. While presenting the flexibility of DC-based lighting solutions, the paper clearly motivates the design choices taken for the EDISON project [6][7][8] and introduces the main building blocks of the EDISON smart lighting system. It also introduces the latest efforts to make the EDISON smart lighting solutions interoperate with other (building management) systems.…”

Technology and Application of Centralized DC Power Supply for LED Street Lamp

“…In this program, in the street lamp control cabinet equipped with AC/DC power supply, the AC power conversion to DC 240V, and the distribution line output to the LED lamp; in the street with high reliability DC/DC drive power instead of the original AC/DC drive power supply. DC power supply centralized layout, which will help improve the efficiency of power conversion, and simplify the LED street lamp drive power, and DC power supply voltage stability, to avoid the impact of LED lamps, LED lamps will help improve the life of the lamp drive power supply life and reliability, Maintenance cycle, reduce maintenance costs; AC and DC power conversion part of the DC installed in the road control cabinet, to avoid the maintenance of the pole, is conducive to reducing maintenance workload [3].…”