Energy survey and MATLAB/Simulink Simulation of 24VDC lighting systems for off-grid rural houses in Papua New Guinea

Le résumé fourni par la source

Access to reliable electricity in rural Papua New Guinea remains limited. This has led to solutions involving solar PV and energy storage system to facilitates local energy demand in households. This study simulates and evaluates a 24?V DC lighting system integrating a solar battery and a DC–DC boost converter with PI control to ensure voltage regulation under realistic demand profiles. A case study was conducted to identify the types of household energy usage and its priority. Lighting in rural household setting in PNG dominates 78% of the demand, that is evening lighting from 18:00 – 23:00 hours. The MATLAB/Simulink model is used to create and assess the behavior of generating a DC lighting system. The converter dynamics was assessed under varying input battery voltage and dynamic load changes. Key performance metrics include duty cycle behavior, transient response, load voltage stability, and power transfer efficiency. Results show stable regulation at 24?V with peak converter efficiency up to 92%, indicating that direct DC delivery can meet core needs while avoiding inverter losses inherent to AC systems. The work’s contribution is an integrated, scenario-driven assessment of converter stability, load efficiency, and sustainability to PNG’s rural context, yielding a scalable reference design for solar PV–based electrification and practical guidance on component sizing and control tuning for household deployment. Keywords: DC-DC Boost Converter, Rural Lighting Systems, MATLAB/Simulink Simulation, Solar Photovoltaic Systems, Household Energy Needs, Papua New Guinea.

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