Power Management of an off-grid hybrid PV-Wind-Battery System including electrical and hydraulic loads

Abstract

In this paper a hybrid photovoltaic (PV)/wind/battery system for off-grid applications with its Power Management System (PMS) is investigated. The Hybrid PV-wind is coupled via converters to battery stack for electrical storage and Motor-pumps for water production and hydraulic storage. The global power management strategy is defined for sharing the power flows between the battery and the hydraulic loads taking the irradiation and the wind speed into account. The hybrid system with its PMS is developed and tested using a dynamic simulator. The system performance is shown under different scenarios and operation modes. Several tests are carried out using real meteorological data of a remote area and a practical load demand profile.