Smart bi-directional inverter control and PV-ESS integration for net zero energy residential buildings

Abstract

Climate change, sustainable energy goals, and declining investment costs have increased the use of solar photovoltaic generation in residential buildings. According to research, residential buildings account for around 40% of the world's overall energy use. Most of this utilised energy is derived from fossil fuels, a cause of environmental degradation. The net zero energy building (NZEB) provides a solution to this worrisome pollution. Rooftop solar panels coupled with home-scale storage units are becoming more common in residential areas, and they provide prosumer families with tremendous potential to profit from selling their excess energy to the grid or neighbours. Consequently, the primary purpose of this research paper is to integrate solar (photovoltaic) PV with a household energy storage system (ESS) and the utility grid with NZEB's electrical load. Power electronic converters are necessary to interface renewable energy sources (RESs) with the grid and the NZEB in order to accomplish this objective. This research work aims to develop an intelligent next-generation bi-directional inverter controller to meet the consumer flexibility demand under different operational constraints. A model predictive current control topology for the inverter has been proposed to achieve the bi-directional power flow. Fourth-order Newton Gregory (N-G), backward differencing polynomial has been used for prediction purposes.