Track: Manufacturing

Abstract

Advanced technology is required to support the needs of metal manufacture in shaping many various products. An electrical furnace with inverter topology is one of example advanced technology application to melt and alloy metals and refractories. However, a furnace inverter is a non-linear load that creates voltage and current harmonics in the electrical network. Harmonics generate distortions and voltage variations in the electrical grid and it makes the grid is out of balance. Another effect of an electric furnace is a decrease in power factor, resulting in reduced electrical efficiency as well as transformer capacity. In this works, a model investigation and analysis are carried out to combine a active power factor correction and active hybrid filters to get the best outcomes for better furnace inverter performance to the electrical grid. The furnace inverter is modeled in equivalent power and control circuit to deliver the matched value in power factor with 1-3 percent difference to manufacturing data equipment. The results of the experiment show that the proposed model for the modified furnace has delivered the improving electrical power quality in the power factor by 13 percent to 17 percent. The other promising results are a reduction in power distortions, sag, and swell.