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Active Power Filtering Implementation Using Photovoltaic System with Reduced Energy Storage Capacitor

Authors: Tsair-Fwu Lee, Horng-Yuan Wu, Chin-Yuan Hsu


A novel three-phase active power filter (APF) circuit with photovoltaic (PV) system to improve the quality of service and to reduce the capacity of energy storage capacitor is presented. The energy balance concept and sampling technique were used to simplify the calculation algorithm for the required utility source current and to control the voltage of the energy storage capacitor. The feasibility was verified by using the Pspice simulations and experiments. When the APF mode was used during non-operational period, not only the utilization rate, power factor and power quality could be improved, but also the capacity of energy storage capacitor could sparing. As the results, the advantages of the APF circuit are simplicity of control circuits, low cost, and good transient response.

Keywords: Sampling, Energy Balance, active power filter, energy-storagecapacitor, harmonic current

Digital Object Identifier (DOI):

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