Change Effect of LCL Filter Parameter Values and Series Damping Resistor Value in Single Phase Grid Connected Inverter
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Date
2020
Authors
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Publisher
EMO Bilimsel Dergi
Abstract
In this study, LCL filter parameters of a single phase grid
connected inverter were calculated. The change of total
harmonic distortion (THD) of the grid current and power loss
values when the calculated LCL filter parameters and series
damping resistor were increased and decreased by 50% was
analyzed and the most appropriate values were determined.
Analysis studies were carried out using the PSIM simulation
program. The study had a power of 1 kW and proportional
resonant (PR) control was used in current control and T/4
delay PLL structure was used in PLL algorithm. According to
the results of the analysis, it was determined that increasing
the inductor values decreased the THD value of the current
and the amount of power loss. In addition, decreasing the
damping resistor value also decreased THD and power loss
values. In LCL filter design, it was seen that it would be
appropriate to increase the inductor values and to decrease
the series damping resistor value.
Description
Keywords
LCL filter, Single phase grid connected inverter, PR current control