Modeling of 1.6 kWp single-phase grid-connected photovoltaic system

This paper presents modeling of existing proprietary-based 1.6 kWp single-phase grid-connected photovoltaic (PV) system in Electrical Energy Conversion Research Laboratory (EECRL) of School of Electrical Engineering and Informatics (SEEI), Institute of Technology Bandung (ITB). The PV system was a grant from Indonesia State Utility Company (PT. PLN), included with the propietary inverter. Although it has supplied the energy to the laboratory, but detail study has not been conducted due to proprietary feature of the inverter unit. In this paper, an attempt to construct model to accurately represent the 1.6 kWp PV system of EECRL is presented. This modeling is useful to examine the performance of the 1.6 kWp PV system. Proposed modeling consist of PV array, DC-DC boost converter with maximum power point tracking (MPPT) feature, full-bridge DC-DC converter with galvanic isolation, and utility interactive DC-AC inverter. Simulation is conducted to verify part by part of the proposed model, comparison with actual result of the 1.6 kWp PV system is also conducted to verify the proposed model.