The inverter is designed for three-phase grid configurations without using external transformers. It contains gallium nitride technology, a first for Enphase's microinverters. More than a simple power converter, a 3-phase PV inverter determines the efficiency, stability, and economic performance of the entire photovoltaic array. While the utility grid supplies alternating current. The main purpose of this paper is to conduct design and implementation on three-phase smart inverters of the grid-connected photovoltaic system, which contains maximum power point tracking (MPPT) and smart inverter with real power and reactive power regulation for the photovoltaic module arrays. Go bigger with 175% DC oversizing, keep costs low with modular design and provide confidence with robust built-in safety features. Ideal for a broad range of projects, including commercial and industrial rooftops, Agri-PV, carport, floating PV and small utility scale.