Abstract
This paper presents a dual three-phase topology of unified power quality conditioner (UPQC) composed of two filters, a series active filter and a parallel active filter, aimed to compensate both, the current and voltage, harmonics and unbalance. Different from conventional UPQC, the dual UPQC has the series filter controlled as a sinusoidal current source and the parallel filter controlled as a sinusoidal voltage source. Therefore, the PWM controls of the dual UPQC deal with a well known frequency spectrum, since it is controlled using voltage and current sinusoidal references, differently from the conventional UPQC which is controlled using nonsinusoidal references. In this paper it is presented the analog control project and some experimental results of the developed prototype.
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