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Capacitors are widely used for power-factor correction (PFC) in power systems. When a PFC capacitor is installed with a certain load in a microgrid, it may be in parallel with the filter capacitor of the inverter interfacing the utility grid and the local distributed-generation unit and, thus, change the effective filter capacitance. Another complication is the possibility of occurrence of resonance...
Wind energy is fluctuating. However, in wind turbine generators (WTGs), by allowing a certain amount of variations of the voltage on the bus, a dc bus capacitor is able to offer a power shaping ability, and can function as an energy storage system (ESS). This paper proposes a power fluctuation filtering algorithm, applied to the ESS to selectively and adequately attenuate the medium frequency wind...
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