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.
Digital Object Identifier (DOI)
The support of University of Kentucky, the L. Stanley Pigman endowment, and the Power and Energy Institute of Kentucky (PEIK) are gratefully acknowledged.
Rallabandi, Vandana; Akeyo, Oluwaseun M.; and Ionel, Dan M., "Modeling of a Multi-Megawatt Grid Connected PV System with Integrated Batteries" (2016). Power and Energy Institute of Kentucky Faculty Publications. 50.