Smart LED lighting system with occupants’ preference and daylight harvesting in office buildings

ABSTRACT

Artificial lighting contributes an impactful quantity of total energy consumption and needs to be reduced especially in zero energy buildings (ZEB). Daylight harvesting holds a great potential to maximize the energy-saving in buildings, whereas it may disturb the occupants’ visual preference if not regulated properly. With the advancements in sensing and communication technology, many energy-efficient lighting systems are proposed for office buildings but they lack in addressing occupants’ visual preferences. Therefore, a low voltage DC (LVDC) powered smart LED lighting system with daylight harvesting and occupants’ visual preference is proposed. The proposed system enhances energy saving by controlling the daylight harvesting and other lighting parameters in the office building, keeping users’ visual preference on priority. Experimental results show that with the proposed system, an energy saving of 26.11% has been reported when compared with the conventional setup of equal illumination over a period of 30 days. Energy-saving of 61–69% is reported by utilizing the proposed system in clear sky conditions when compared to the existing lighting setup. However, in cloudy conditions, the proposed system preserves 42–55% energy concerning the existing system in the office building. In the end, economic-analysis is explored to analyze the cost-saving along with environmental benefits.

KEYWORDS:

• LED lighting
• ZEB
• personalized lighting control
• occupants preference
• energy saving

Additional information

Notes on contributors

Ajay Shankar

Ajay Shankar received his B. Tech. in electronics engineering from Shobhit University, Meerut in the year 2012. He obtained his M. Tech. degree in Electrical (Control and Automation) Engineering from National Institute of Technology (NIT), Rourkela, Odisha, India in the year 2014. Subsequently, he joined the department of electrical engineering, Manipal University Jaipur as Assistant Professor and availed study leave to pursue higher studies in energy management in July 2018. Currently, he is working towards his Ph.D. degree with the department of electronics and communication engineering, Indian Institute of Information Technology, Design, and Manufacturing (IIITD&M), Chennai, India. His research interest includes smart lighting system and energy management in modern buildings.

Vijayakumar Krishnasamy

K. Vijayakumar obtained his Bachelor’s degree in Electrical and Electronics Engineering (EEE) in the year 2006 from Coimbatore Institute of Technology, Coimbatore. He obtained his M.Tech. degree in Power Systems from National Institute of Technology (NIT), Tiruchirappalli, Tamil Nadu, India in the year 2009. Subsequently, he was admitted as Ph.D. Research Scholar with MHRD (Govt. of India) fellowship in the Department of EEE, NIT, Tiruchirappalli, and completed his dissertation in the year 2012. He was Postdoctoral Research Fellow in Nanyang Technological University, Singapore, from November 2012 to December 2013. He is currently working as Faculty in the Department of Electronics and Communication Engineering, Indian Institute of Information Technology, Design and Manufacturing, Kancheepuram, Chennai. He also holds the Adjunct Faculty position at National Centre for Disaster Mitigation and Management, MNIT Jaipur. He received Young Scientist Award for start-up research grant which was given by SERB – DST (Govt. of India) in the year 2015. His research interest includes design and development of DSP-based power electronics controllers for renewable energy, industrial electronics and control, smart grid, power electronics and electrical machines, FACTS controllers and SMPS for telecommunication systems.

B. Chitti Babu

B. Chitti Babu received Ph.D degree in Electrical Engineering from National Institute of Technology Rourkela, India in 2012. He was an Assistant Professor in the Department of Electrical Engineering, National Institute of Technology Rourkela, India from 2007 to 2013. He had Post-Doctoral research appointments with the Wroclaw University of Science and Technology, Poland, during 2013-2014, and with the VSB-Technical University of Ostrava, Czech Republic, during 2014-2015. Both of these appointments were sponsored by the European Commission, UK. He was an Assistant Professor in faculty of engineering, University of Nottingham (U.K) Malaysia Campus, Malaysia from Sep 2016- June 2018. Since June 2018, he has been an Assistant Professor in Indian Institute of Information Technology, Design and Manufacturing, Kancheepuram, Chennai, India. B. Chitti Babu serves as an editorial board member/associate editor of many peer reviewed journals, including IET Renewable Power Generation, IET Power Electronics, IET Energy Systems Integration, International Transactions On Electrical Energy Systems, Electrical Engineering,  Energy Sources-Part A. .His current research interests include power electronics applications in smart distribution grids containing renewable energy sources, Design of Low power Photovoltaic (PV) system including MPPT Algorithm, control and grid integration of Renewable energy systems.