Power Management Strategy for Standalone PV Applications with Hybrid Energy Storage System

Hybrid energy storage systems that combine the high density power of the supercapacitors with the high energy density of the Li-ion batteries have been substantially researched, with great interest. This manuscript proposes a new power management strategy implemented using the Rule based controller which considers the state of charge of the Li-ion batteries (SOC). The Li-ion batteries are used to provide a steady and constant power, function of the state of charge (SOC), enabling a higher efficiency and extending batteries lifespan. A typical standalone PV application is used to demonstrate and validate the performance of the proposed power management strategy.