Abstract. This work presents the implementation of a singlephase parallel active filter for harmonic compensation. The idea is to optimize the processed power by the active single-phase filter restricting the compensation only to harmonic currents without processing the linear reactive one. It is made a comparison study of processed power by a conventional active power filter compensating the entirely reactive power and another compensating only the harmonic contents. It is presented the control methodology employed, the power circuit design and the results obtained through a 500VA experimental prototype.
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