In the paper, a new power control algorithm for hybrid energy storage system (HESS) is proposed. The algorithm is dedicated for vehicular applications. The aim is to enable connecting any number of energy storage devices or generators to the system and providing universal input for energy management strategy. Described system is based on multiple converter configuration with all devices connected to one DC link. Half-bridge DC/DC converters are used to interface between device and DC link. Theoretical analysis and simulations for the system composed of lithium-ion batteries, supercapacitors and photovoltaic panel were carried out.

hybrid energy supply system, supercapacitor, lithiu-ion battery, energy storage system