Modelling Home Appliances of DC House Based on Rooftop Photovoltaic Power Supply

Abstract

The implementation of rooftop photovoltaic (PV) system in Indonesia mostly using inverter to convert the DC voltage supply into AC voltage supply to power the AC home appliances. This inverter is a complex and expensive electronics system. Many of the rooftop PVs are in fault condition due to the failure of their inverters. Therefore, the trends of applying everything’s DC source has been recently developed. This paper examines the modelling of several home appliances (i.e., refrigerator, television, washing machine, air conditioner, crockpot, laptop, mobile phone charger, and LED lightings) of a DC house, which is powered by the rooftop PV using the MATLAB/SIMULINK platform. This proposed model considers the PV (solar cell) module, chargecontroller, battery, and the home appliances as the end load of the system. As the results, this model then analyses and compares to the PV system that powered the AC home appliances to get better vision of DC home appliances that can be implemented in the community