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Browsing Fakülteler by Subject "Active power control"

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    Effect of passive series damping resistor on single phase grid connected inverter with LCL filter
    (Pamukkale University Journal of Engineering Sciences, 2020) Karafil, Akif
    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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    LCL Filter Design and Active Power Control for Single Phase PWM Rectifier
    (Konya Journal of Engineering Sciences, 2020) Karafil, Akif; Özbay, Harun
    The most important advantage of pulse width modulated (PWM) rectifier circuits over traditional diode rectifier circuits are the adjustable DC voltage and power factor. However, due to the hard switching condition in the PWM rectifier circuits, high order current harmonics occur in the grid. In order to reduce these high order harmonics, a filter must be used on the grid side. Although there are many filter types, the LCL type filter is the most commonly used filter type. In this study, simulation and experimental results of active power controlled single phase PWM rectifier circuit were presented by calculating LCL filter. The simulation of the study was conducted in the PSIM program. All control software of the system was achieved by writing codes to the C block in the program, and the embedded codes were produced by the program. The system was designed to transfer 400 W active power and PI was used for power control, PR controller for current control and T/4 delay phase locking loop (PLL) algorithm for grid frequency control.