Replacing centralized and dispatchable bulk power production with diverse small, medium-scale, and large-scale non-dispatchable and renewable-based resources is revolutionizing the power grid. The Energy Storage Systems (ESSs) have also been employed alongside RESs for enhancing capacity factor and smoothing generated power.
Power converter technologies This section focuses on the interfaces for the interconnection of the electrochemical energy storage systems with the electrical system. These interfaces are based on power electronic converters. They can be divided into three different categories: standard topologies, multilevel topologies and multiport topologies.
To interconnect these systems to the electrical network, it is required to usepower electronic interfaces. Various power electronic converters for the interface between the electrochemical energy storage system and the electrical network have been described. These power converters are divided into standard, multilevel and multiport technology.
The Energy Storage Systems (ESSs) have also been employed alongside RESs for enhancing capacity factor and smoothing generated power. This structural transformation has been accompanied by unceasing progress in intermediate modern power converters' manufacturing technology and control techniques.
In the energy storage systems, a bidirectional AC/DC converter with a proper charging/discharging profile istypically required to transfer energy between the energy storage and the AC grid. The non-isolated single stage topologies are the simplest and most efficient for the interfacing of energy storages with AC systems.
The structure of the power converter can be divided into single stage or double stage. In the single stage, only a unique power converter is used to control the charge and discharge of the storage system and at the same time to connect to the AC grid.