Main Article Content
Abstract
This paper presents a simplified control technique for a dual three phase topology of a unified power quality conditioner – Buck-Boost Unified Power Quality Controller (UPQC). The UPQC 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 UPQC, the UPQC has the series filter controlled as a sinusoidal current source and the shunt filter controlled as a sinusoidal voltage source. Therefore, the pulse with modulation (PWM) controls of the UPQC deal with a well-known frequency spectrum, since it is a controlled using voltage and current sinusoidal references, different from the conventional UPQC that is controlled using non sinusoidal references. In this paper, the proposed design control, power flow analysis, and experimental results of the developed prototype are presented. The UPQC which can be used at the PCC for improving Power quality is modeled and simulated using proposed control strategy and the performance are compared by applying it to a distribution system without compensation, shunt compensation, series compensation and with UPQC. The performance of this UPQC has been evaluated with a typical industrial load with realistic parameters supplied by polluted distribution network.