Grid-connected and Islanded Control of Energy Storage Converter
Abstract
The development of distributed generation systems allows for the widespread application of microgrids in electric power systems. In most cases, renewable energy sources(RES) are used to provide power generation. Use of RES reduces environmental impact over conventional generation units but can lead to power outages in microgrids. In order to alleviate this and other drawbacks of RES, battery energy storage systems (BESS) can be used in coordination with RES. Amongst other functions, BESS can provide microgrids with power during outages. The main parts of BESS are the voltage source converter (VSC) and batteries. VSC allows for both gridconnected and islanded operation of the BESS. This paper presents simple control algorithms of battery storage converter during grid-connected and islanded mode of operation as well as algorithms for transition from one mode to another and vice versa. Experimental verification of presented algorithms is performed using prototype of 100 kVA storage converter and battery string with capacity of 70 kWh.
Božo Terzić
Full Professor | Department of Electrical Drives and Industrial Control
Full professor at the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture in Split, with significant contributions in the field of industrial development projects including the design of prototypes of electronic converters used in industrial plants around the world. His research interests are focused on the application of electronic converters in electric drives and renewable energy sources.
Ozren Bego
Associate Professor | Department of Electrical Drives and Industrial Control
Marin Despalatović
Full Professor | Department of Electrical Drives and Industrial Control
Full professor at the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split, where he teaches courses Electric Machines, Electric Drive Systems, and Electromechanical System Modeling. His research focuses on power systems, energy storage, and smart grid technologies, with active participation in multiple national and international projects aimed at advancing energy infrastructure and improving system stability.
