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PV Based Three-Level NPC Shunt Active Power Filter with Extended Reference Current Generation Method

M. Vijayakumar 1 and S. Vijayan 2
1. Department of Electrical and Electronics Engineering, K.S.R College of Engineering, Tiruchengode-637215, Tamilnadu, India
2. Surya Engineering College, Erode-638107, Tamilnadu, India

Abstract—This paper proposes an extended reference current calculation method for the PV based three-level neutral point clamped (NPC) shunt active power filter (SAPF). Shunt active power filter demands a source of energy for compensating the current based distortions, which utilizes the photovoltaic array with DC-DC boost converter as a source of DC power. The shunt connected inverter controls the DC link voltage as well as the active and reactive power transferred between the renewable energy sources to grid with improved power quality. The proposed controller is based on the use of high selectivity filter (HSF) for reference current generations. In addition the fuzzy logic controller is implemented for better current control accuracy of shunt active filter. The main benefits of the proposed system are that it will provide uninterrupted compensation for the whole day and compensate the voltage interruption. This system utilizes the renewable energy and accordingly saves the energy, shares the load and provides uninterruptable power supply to critical/sensitive load, through the photovoltaic (PV) array/battery bank during the day and night. A simulation of the proposed topology has been carried out in the MATLAB/Simulink environment and the results are presented. Experimental studies are carried out to confirm the effectiveness of the proposed configuration.

Index Terms—photovoltaic systems, DC-DC power converters, multi level NPC voltage source inverter, fuzzy control, total harmonic distortion

Cite: M. Vijayakumar and S. Vijayan, "PV Based Three-Level NPC Shunt Active Power Filter with Extended Reference Current Generation Method," International Journal of Electrical Energy, Vol. 2, No. 4, pp. 258-267, December 2014. doi: 10.12720/ijoee.2.4.258-267

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