The power converter allows efficient processing of the electric power from the available energy source to the load. This power converter is usually known as atwo-port converter due to the input port that connects to the energy source and the output port that connects to the load.
Multilevel power converters can be an important interface for theelectrochemical energy storage systems, since capacitors, batteries, fuel cells or other storage equipments can be used as the multiple DC voltage sources.
A transformerless energy storage system based on a cascade multilevel PWM converter with star configuration Trintis I, Munk-Nielsen S, Teodorescu R. Cascaded H-bridge with bidirectional boost converters for energy storage. In: 14th European conference on power electron and appl; 2011. p. 1–9.
Thus, besides a review of the most important electrochemical energy storage systems, this paper also presents a description of the different types of power converter topologies, such as, thestandard, multilevel and multiport based structures.
In the scenario of high penetration level of renewable energy in the distributed generation, BESS plays a key role in the effort to combine a sustainable power supply with a reliable dispatched load. Several power converter topologies can be employed to connect BESS to the grid.
Then, an advanced design methodology of power electronic converters based on multi-objective optimization considering the cost, efficiency, and power density is presented. Finally, the control algorithms of power electronic converters for different operation modes in the microgrid are summarized. 2. Converter topologies
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