Effect of passive series damping resistor on single phase grid connected inverter with LCL filter
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Date
2020
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Pamukkale University Journal of Engineering Sciences
Abstract
In this study, analysis, design, simulation and the application of a single phase grid connected inverter circuit with LCL filter were realized at 600 W power and the effect of passive series damping resistor on the circuit was examined. Proportional integral (PI) was used for the active power control, proportional resonant (PR) controller was used for the current control and T/4 delay phase locked loop (PLL) algorithm was used for frequency control of the grid. The analyses were conducted without series damping resistor and the simulation and the experimental results were obtained for different power values. Then, the series damping resistor was connected to the LCL filter in the inverter circuit and the results were obtained again. The obtained simulation and the experimental results showed that the oscillations in the grid current decreased and the power transitions became more uniform with the series damping resistor.
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Keywords
Series damping resistor, Active power control, PR current control, LCL filter, Single phase grid connected inverter