This paper presents a simplified control technique for a dual three-phase topology of a unified power quality conditioner Buck-Boost dynamic voltage restorer  ( DVR ) . The DVR is composed of two active filters, a series active filter and a shunt active filter  ( parallel active filter ) , used to eliminate harmonics and unbalances. Different from a conventional DVR, the DVR has the series filter controlled as a sinusoidal current source and the shunt filter controlled as a sinusoidal voltage source. Therefore, the Double Carrier Pulse Width Modulation  ( DCPWM)  controls of the DVR deal with a well -known frequency spectrum; we implemented Model predictive control so control response time is very fast.