Research Control Devices for LED Light Sources under Their Operating Conditions at Elevated Temperatures

Author:

Beliakova Iryna1,Piscio Vadim2,Maruschak Pavlo2ORCID,Shovkun Oleksandr2,Medvid Volodymyr2,Mykhailyshyn Roman234ORCID

Affiliation:

1. Department of Electrical Engineering, Ternopil Ivan Puluj National Technical University, 46001 Ternopil, Ukraine

2. Department of Automation of Technological Processes and Manufacturing, Ternopil Ivan Puluj National Technical University, 46001 Ternopil, Ukraine

3. Texas Robotics, College of Natural Sciences, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX 78712, USA

4. EPAM School of Digital Technologies, American University Kyiv, 02000 Kyiv, Ukraine

Abstract

The electrical and light characteristics of light-emitting diodes (LEDs), upon which modern lighting devices are constructed, are significantly influenced by ambient temperature. As the temperature rises, the luminous flux of LEDs diminishes, and the lifespan of LED devices also decreases. The control devices (drivers) used in LED lighting systems, built based on current stabilization schemes, do not effectively stabilize the luminous flux when the ambient temperature fluctuates between +15 to +60 °C. The luminous flux declines as the temperature increases, even if the current supplied to the LEDs remains constant. This paper presents a comparative analysis of LED lighting devices equipped with drivers featuring current stabilization and those with drivers employing voltage stabilization for operation in higher temperature conditions.

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

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