LCL Filter Design and Active Power Control for Single Phase PWM Rectifier
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Date
2020
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Publisher
Konya Journal of Engineering Sciences
Abstract
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.
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Keywords
Active power control, Single phase PWM rectifier, LCL filter