Energy Management Strategies and Control of a Hybrid Grid-Connected Renewable Energy System with Three Modes Controlled DFIG based Wind Turbine

Abstract

This paper deals with three novel Energy Management Strategies (EMS) for a Grid-Connected Hybrid Renewable Energy System (GCHRES) that utilizes a photovoltaic solar generator (PVG) and three modes controlled Wind Turbine system based on DFIG, along with a storage system based on battery. The CCP serves as the connection point between the Utility Grid (UG) and a residential AC load, primarily powered by the Renewable Energy Sources (RES). The UG acts as a backup source, and to limit the subscription power exceeding, the battery is designed to perform the peak shaving. Given the high vulnerability of batteries, the primary goal of all proposed EMSs is to maintain a continuous power supply while also protecting the battery from overcharging and deep discharge. Additionally, these EMSs are designed to lower the monthly energy bill for UG customers. The specific features of these EMSs vary depending on the metering types. And to maintain balance within the system, All components powers are controlled. The performances of the GCHRES were evaluated using simulation in MATLAB/SIMULINK environment. Results concerning the continuous ability to meet demand, stability of the system, tracking of references, and also wind turbine system control are discussed in this article. Keywords—Control and regulation, DFIG, Energy Management Strategies, Grid-Connected, Peak shaving, Photovoltaic,Pitch control, Renewable Energy, Wind Turbine