LEDs. The light of the future today. Scheme, description

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Electrician

LEDs. Light of the future today. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / LEDs

Currently application semiconductor light sources (hereinafter referred to as IP) in general coverage is not yet widespread. From open sources of information, one can get only a rough picture of the implementation of SD in coverage abroad. So, about 60% of LED lighting projects relate to retail space and restaurant lighting, 30% to private underground garages, 7% to office lighting, and only; about 3% (single projects) - street lighting.

2007 marked the beginning of serious projects on the use of semiconductor ICs in street lighting. So, in February 2007, a joint project of Cgee companies, Lighting Science Group Corporation and the government of the state of North Carolina was announced under the name "LED City" ("Light-emitting diode city" ledcity.org).

The project will convert state capital Raleigh's municipal lighting to solid-state lighting, including street lighting, underground parking garages, pedestrian crossings, parks, architectural and accent lighting.

Economic calculations commissioned by the municipality of Raleigh showed that energy savings after the implementation of this large-scale project will be about 40%, and the payback period for capital costs will be about 3 years.

The project will be carried out entirely on XR-E7090 series white LEDs (in general lighting fixtures) and XR7090 (in architectural and accent lighting fixtures). In addition to replacing traditional luminaires with LED luminaires, the ODL® (Optimized Digital Lighting) intelligent lighting control system will be used, which allows managing electricity consumption depending on changes in external conditions (illumination level, presence of people in the lighting area, etc.). Already within the next 18 months, it is planned to completely re-equip the lighting system of the business center with a population of more than 350 thousand people.

In Russia, Ukraine and other CIS countries, attempts to introduce semiconductor ICs into general lighting are undertaken only by individual enthusiasts and have not yet had a single large-scale implementation. According to many experts, this is due to the lack of interest of potential consumers (city authorities, developers, operating organizations). This lack of interest, in addition to the traditional reasons associated with lobbying the interests of manufacturers of lighting equipment, is associated with the ambiguity of proposals for the end user.

At the same time, there are no real economic calculations that can show the complex economic effect and payback periods. The above example shows that when there is a clear justification for the proposal and the initiative comes directly from the customer, there are companies that are ready to implement even the most ambitious project.

Recently, some Russian manufacturers of traditional lighting equipment for general lighting have begun to realize that LEDs are not competitors for them, but the opportunity to bring their products to a new technological level and, thereby, gain a significant competitive advantage in the market. This inspires hope that the situation will soon begin to change and that we will not be too far behind advanced foreign countries in the application of SD.

Author: Koryakin-Chernyak S.L.

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