TY - GEN
T1 - Evaluation of DC-link decoupling using electrolytic or polypropylene film capacitors in three-phase grid-connected photovoltaic inverters
AU - Karanayil, Baburaj
AU - Agelidis, Vassilios G.
AU - Pou, Josep
PY - 2013
Y1 - 2013
N2 - The life expectancy and long term reliability of grid-connected three-phase photovoltaic (PV) inverters can be increased by replacing the conventional electrolytic film capacitors by metallized polypropylene film capacitors. This paper presents a detailed evaluation of a three-phase grid-connected PV inverter performance when replacing the electrolytic capacitor with a minimum value of metallized polypropylene film capacitor-one. The minimum dc bus capacitance leads to larger voltage ripples. However, such ripples were found to be within acceptable limits to run the inverter satisfactorily. Simulation results are presented for a 15-kW grid-connected inverter at nominal voltage of 700V dc and experimental results are provided for a 3.0-kW system at a nominal voltage of 400V dc, built in the laboratory.
AB - The life expectancy and long term reliability of grid-connected three-phase photovoltaic (PV) inverters can be increased by replacing the conventional electrolytic film capacitors by metallized polypropylene film capacitors. This paper presents a detailed evaluation of a three-phase grid-connected PV inverter performance when replacing the electrolytic capacitor with a minimum value of metallized polypropylene film capacitor-one. The minimum dc bus capacitance leads to larger voltage ripples. However, such ripples were found to be within acceptable limits to run the inverter satisfactorily. Simulation results are presented for a 15-kW grid-connected inverter at nominal voltage of 700V dc and experimental results are provided for a 3.0-kW system at a nominal voltage of 400V dc, built in the laboratory.
KW - electrolytic capacitor
KW - grid-connected inverters
KW - Photovoltaic systems
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U2 - 10.1109/IECON.2013.6700290
DO - 10.1109/IECON.2013.6700290
M3 - Conference contribution
AN - SCOPUS:84893531697
SN - 9781479902248
T3 - IECON Proceedings (Industrial Electronics Conference)
SP - 6980
EP - 6986
BT - Proceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society
T2 - 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013
Y2 - 10 November 2013 through 14 November 2013
ER -
