Hardware and control design of a novel three phase grid tie inverter system

Abstract

Renewable energy-based power generation has become the main focus in the energy field due to the growing concerns over the environmental effects of conventional energy systems. With the advancement in technology, the integration of Solar Photovoltaic (PV) systems into the utility grid has increased over the past few years. Solar PV systems typically generate DC electricity, while the conventional electricity grid is AC of constant voltage and constant frequency. This necessitates the design of low-cost, highly efficient power conversion systems to ensure maximum power capture from solar panels. This paper presents a hardware and control design of a fully controllable source to grid interconnecting system for Solar PV systems with Maximum – Power – Point - Tracking (MPPT). In the proposed system, a Four -Phase Floating Interleaved Boost Converter (4P - FIBC) which is an enhanced boost converter is utilized to have a cost-effective and efficient power conversion. A d-q transformation-based current controlled mechanism is to control the Voltage Source Inverter (VSI). The synchronization between the inverter and the grid is achieved through Phase Locked Loop (PLL) technique. The design is modeled and simulated in MATLAB Simulink. The paper presents the simulation results of the system to verify the system model.