The multi-megawatt grid connected photovoltaic (PV) system studied in the paper includes parallel arrays and power electronic units, each with their own DC-DC and DC-AC converters. In one configuration, the DC-AC converters of adjacent parallel sections are connected in cascade, in order to effectively operate as a multilevel inverter, thereby reducing the filtering requirements. Grid voltage oriented control is employed for inverters and a battery is incorporated for energy storage and performance improvement. Modeling is performed with the PSCAD/EMTDC software, such that both the power electronics components, controls and subsystem aspects, and the electric grid power system issues, can be studied during steady-state and transient operation. The system simulation is demonstrated on a modified IEEE 14-bus test case.

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Conference Proceeding

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Notes/Citation Information

Published in 2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA).

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The document available for download is the authors’ manuscript version that is accepted for publication. The final published version is copyrighted by IEEE and available as: as: V. Rallabandi, O. M. Akeyo and D. M. Ionel, “Modeling of a multi-megawatt grid connected PV system with integrated batteries,” 2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA), Birmingham, 2016, pp.1146-1151. doi: 10.1109/ICRERA.2016.7884512.

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Funding Information

The support of University of Kentucky, the L. Stanley Pigman endowment, and the Power and Energy Institute of Kentucky (PEIK) are gratefully acknowledged.