Unified Power Quality Conditioner Electrical Complex for Compensation Influence of Sharply Variable Loading

The article deals with the study of the compensatory properties of unified power quality conditioner in the complex voltage distortion case by external consumers on a voltage-restorer transformer. Unified power quality conditioner is constructed the topological scheme including series and shunt components. The analysis of known methods a voltage and current compensation determination is carried out. It is determined that the power theory in the structure of the unified power quality conditioner scheme can be rationally applied to a parallel filter-compensating device, and for series it is enough to use filtration methods. In the visual programming environment an electrotechnic complex model developed. Experiments to effectiveness determine of proposed design a unified power quality conditioner have been delivered. In the obtained data analysis, a decrease in voltage and current distortion was noted, but short-term voltage and current pulses remained because the series-connected transformer has a significant windings inductance, which degrades the overall quality indicators.