Advanced Dimming Control Algorithm for Sustainable Buildings by Daylight Responsive Dimming System

This study aims to evaluate the accuracy and energy savings of a daylight responsive dimming system (DRDS) when considering the influence of indirect illuminance. In the case of the existing DRDS, during the calibration process of each luminaire, the other luminaires were turned off to detect the il...

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Bibliographic Details
Published in:Sustainability 2018-11, Vol.10 (11), p.4087
Main Authors: Kim, In-Tae, Kim, Yu-Sin, Nam, Hyeonggon, Hwang, Taeyon
Format: Article
Language:English
Subjects:
Accuracy
Algorithms
Architecture
Calibration
Control algorithms
Control theory
Daylight
Dimming
Emissions
Energy
Energy conservation
Energy consumption
Energy management
Green buildings
Greenhouse gases
Illuminance
Light
Lighting
Luminaires
Power consumption
R&D
Research & development
Sensors
Studies
Sustainability
Teaching methods
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Summary:This study aims to evaluate the accuracy and energy savings of a daylight responsive dimming system (DRDS) when considering the influence of indirect illuminance. In the case of the existing DRDS, during the calibration process of each luminaire, the other luminaires were turned off to detect the illuminance of both the luminaire and the incoming daylight. However, the work plane illuminance under the luminaires was affected by the indirect illuminance from the other luminaires. The final work plane illuminance would thus be higher than the target illuminance during real system operation. To improve the accuracy and energy savings of the DRDS, an improved dimming control algorithm was applied to the DRDS when considering the influence of indirect illuminance. The real-time power consumption and accuracy of the target illuminance of the DRDS when considering the influence of indirect illuminance in a full-scale mock-up was measured and analyzed (for 23 days, from 22 June to 18 July 2018). As a result, the average accuracy of the target illuminance was 98.9% (SD 0.5%), and the average saving in lighting energy was 77%.
ISSN:2071-1050
2071-1050
DOI:10.3390/su10114087