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A single-phase active power filter based in a two stages grid-connected PV system

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3 Author(s)
De Souza, K.C.A. ; Electr. Eng. Dept., Fed. Univ. of Santa Catarina, Florianopolis, Brazil ; dos Santos, W.M. ; Martins, D.C.

In this work a single-phase active power filter based in a two stages grid-connected photovoltaic system is presented. The proposed system injects PV generated power into the utility, and always acts as an active power filter to compensate load harmonics and reactive power such that the input power factor is unity independently of the solar radiation. In sunny days, the system processes all the reactive and active load power and the excessive power from the PV module can be fed to the utility. On the other hand, on cloudy days for instance, if the PV power is not enough, the system processes all the reactive load power and the shortage of active load power is supplemented by the utility. Besides, just using one current sensor, the control strategy is simple and of suitable for practical implementation.

Published in:

Industrial Electronics, 2009. IECON '09. 35th Annual Conference of IEEE

Date of Conference:

3-5 Nov. 2009