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Energy Storage for Sustainable Microgrid by David Wenzhong Gao

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Chapter 3

Interfacing Between an ESS and a Microgrid

This chapter discusses the interfacing circuits needed for an energy storage system (ESS) to connect to the microgrid. In the first part, the structures and basic principles of several power converters are discussed. They include DC-DC converters, AC-DC rectifiers, DC-AC inverters, AC-AC converters. The most important DC-DC converter for an ESS is the bidirectional buck-boost DC-DC converter, which can help the ESS to be charged and discharged. For DC-AC converters, the voltage source inverter (VSI) is the most used converter in practice. A VSI can be used to integrate an ESS or solar photovoltaic into the microgrid. The following section introduces battery management systems (BMS). The different ...

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