Harmonic pollutions generated by industrial lighting systems

2019 ◽  
Author(s):  
Orlin Lyubomirov Petrov ◽  
Angel Kostadinov Musev ◽  
Ahmed Yasharov Yasharov
Keyword(s):  
Lighting Systems ◽  
Industrial Lighting

scholarly journals Peerless Electric & Gas Company

2011 ◽  
Vol 6 (2) ◽  
Author(s):  
Gerald D. Klein
Keyword(s):  
Business Students ◽  
Company Performance ◽  
Performance Expectations ◽  
Marketing Department ◽  
Sales Personnel ◽  
Timely Fashion ◽  
Lighting Systems ◽  
Upper Level ◽  
Industrial Lighting ◽  
Undergraduate Business Students

This case, based on a real situation, illustrates how interdepartmental conflict can affect company performance and is a prelude for a thorough discussion of the antecedents and management of interdepartmental conflict.  The case is appropriate for MBA and upper-level undergraduate business students.  At Peerless Electric & Gas Company, sales personnel in the Marketing department are responsible for the sale of new commercial and industrial lighting, a very profitable business.  The extent to which sales is successful depends on the work of another Peerless department - Engineering and Installation (E/I) - which is responsible for designing, pricing, and installing lighting systems.  The departments report to different managers and each operates under a different set of performance expectations.  Currently, neither the planning and pricing nor the installation of new systems is done in a customer-focused, timely fashion, which jeopardizes the sales of new systems.

Comparison of the electrical parameters of industrial lighting systems with LEDs

2021 ◽  
Author(s):  
Orlin Lyubomirov Petrov ◽  
Ahmed Yasharov Yasharov ◽  
Bogdan Boyanov Yordanov
Keyword(s):  
Electrical Parameters ◽  
Lighting Systems ◽  
Industrial Lighting

scholarly journals Dimmable LED Driver For DC Distributed Lighting System

2020 ◽  
Author(s):  
Mohammad Meraj ◽  
Syed Rahman ◽  
Atif Iqbal ◽  
Lazhar Ben Brahim
Keyword(s):  
Distribution Systems ◽  
High Efficiency ◽  
High Reliability ◽  
Low Cost ◽  
Road Transport ◽  
Maximum Efficiency ◽  
Lighting System ◽  
Led Driver ◽  
Lighting Systems ◽  
Industrial Lighting

This abstract proposes a high brightness, high efficiency, dimmable LED driver based on linear current regulator technology for DC grid distribution systems. The proposed driver has excellent characteristics like the highest lumen per watt, long lifetime, high reliability, compact, low cost, both environmental and user-friendly which makes it suitable for lighting applications. Steady state and small-signal models of the proposed driver are performed which help in minimizing ground current and accurate compensator design, respectively. These two modeling approaches result in the optimization of both the footprint and cost of the driver. The performance of the proposed experimental prototype of the 20W driver is developed to validate the performance at different dimming levels and achieves maximum efficiency of 97%. The applications of the proposed converter are: dimmable home lighting system, advertisement boards and hoardings, industrial lighting systems, road transport indication lamps, indoor and outdoor stadium lighting, automatic street lighting, decorative systems, health appliances and auditoriums and many more.

Discussion on “Industrial lighting” at the Western Section of the Institution

1937 ◽  
Vol 16 (4) ◽  
pp. 186
Author(s):  
Lord Sempill ◽  
H.C. Weston ◽  
F.L. Daniels ◽  
R.H. Coxhill ◽  
H.R. Beasant ◽  
...  
Keyword(s):  
Industrial Lighting

Organic Light Emitting Diodes - Innovative Light Sources

2019 ◽  
pp. 101-107
Author(s):  
Sergei A. Stakharny
Keyword(s):  
Light Source ◽  
Organic Light Emitting Diodes ◽  
Organic Leds ◽  
Light Sources ◽  
High Quality ◽  
Light Emitting ◽  
Organic Light ◽  
Lighting Systems ◽  
Physical Principles ◽  
Prospects Of Application

This article is a review of the new light source – organic LEDs having prospects of application in general and special lighting systems. The article describes physical principles of operation of organic LEDs, their advantages and principal differences from conventional non-organic LEDs and other light sources. Also the article devoted to contemporary achievements and prospects of development of this field in the spheres of both general and museum lighting as well as other spheres where properties of organic LEDs as high-quality light sources may be extremely useful.

Research into the Effect of Photometric Flicker Event on the Perception of Office Workers

2019 ◽  
pp. 22-27
Author(s):  
Cenk Yavuz ◽  
Ceyda Aksoy Tırmıkç ◽  
Burcu Çarklı Yavuz
Keyword(s):  
Experimental Work ◽  
Psychological Problems ◽  
Office Workers ◽  
Questionnaire Study ◽  
Fast Growing ◽  
Lighting Conditions ◽  
Lighting Systems ◽  
Enormous Number

Today the number of office workers has reached to an enormous number due to the fast-growing technology. Most of these office workers spend long hours in enclosed spaces with little/no daylight penetration. The lack of daylight causes physiological and psychological problems with the workers. At this point lighting systems become prominent as the source and the solution of the problem. Photometric flicker event which arises in the lighting systems can sometimes become visible and brings a lot of issues with it. In this paper, an experimental work has been done to investigate the effect of flicker. For this purpose, the flicker values of 3 different experiment rooms for different lighting conditions and scenarios have been measured and a questionnaire study has been carried out in the experiment rooms with 30 participants. In conclusion, the effect of the flicker event on the volunteers have been classified and some methods have been proposed not to experience flicker effects.

Luminous Environment and the Perceived Environment

2019 ◽  
pp. 15-21
Author(s):  
Banu Manav
Keyword(s):  
Experimental Studies ◽  
Light Output ◽  
Lighting Design ◽  
Lighting System ◽  
Main Concept ◽  
Healthy Environment ◽  
Perceived Environment ◽  
Efficiency Cost ◽  
Lighting Systems ◽  
User Friendly

In lighting design, the main concept is to achieve a healthy environment, which addresses energy efficiency, cost, maintenance, and quality. User-friendly lighting systems shall be adopted to architecture and interior architecture. User control over the lighting system is important, by dimming or increasing light output, by changing the colour of the light sets the inner atmosphere and affects user mood. Standards and codes on lighting shall also be evaluated by means of these topics. The paper aims to analyse how the luminous environment is affective on the perceived environment. Hence, a series of experimental studies and recent research will be evaluated in regard to understanding and designing luminous environment.

Design of Solar-Powered LED Road Lighting System

2019 ◽  
pp. 75-85
Author(s):  
Canan Perdahci ◽  
Hamdi Ozkan
Keyword(s):  
High Pressure ◽  
Renewable Energy Sources ◽  
Junction Temperature ◽  
Mercury Vapour ◽  
Light Sources ◽  
Street Lighting ◽  
Led Light ◽  
Road Lighting ◽  
Lighting Systems ◽  
High Pressure Sodium Lamp

Turkey is rich in terms of renewable energy sources and, therefore, is now encouraging the use of sustainable clean lighting systems in road applications. High pressure sodium lamp is the most widely used type in main roads, but other types of lamps such as mercury vapour lamps or metal halide lamps can be utilized for street lighting. Since it enables energy and money saving, LED light technology has replaced high pressure sodium lamps nowadays. Once solar power system (PV) is integrated with LED lamp for street lighting, the amount of saving and local impact might be enriched. LEDs used as light sources in road lighting luminaires with rising lumen values, decreasing junction temperature, higher colour rendering efficiency, longer lifetime have become more efficient than many light sources with the latest developments. Since the structure of the luminaires in which the LED light sources are used differs from that of the conventional light sources, the optical, thermal and electrical design of the LED luminaires must be considered differently. Thus, this study concentrates upon design considerations and the operating principle of solarpowered LED road lighting luminaire in details. Also, a simple solar panel system was designed and the economical values obtained at the end of 20 years were compared when using the ongrid system and the off-grid system.

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