Study of Converters for Energy Storage Systems in Parallel Operation of Modules or Elements

Energy storage systems use electrical converters for charging and discharging energy storage elements. In order to obtain greater power of the converters, parallel operation of units is used. For application at high input voltages, converters connected in series along the input are used. The converters are most often resonant converters operating on a common load and with dephased controls - multiphase systems. The paper presents investigate different configurations of connecting converters or elements to obtain a certain power output by using elements or units with less power. Simulation results are shown.