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Electrical arc furnace (EAF), acting as a fast varying real power and reactive power sink, not only induces the power quality pollution back to utility, but also prevent the effective production of metal industry. In this paper, a methodology of designing an energy storage system (ESS) for EAFs is presented. Based on the field data-based study of a typical EAF, the power, energy, and speed requirement of ESS are quantitatively evaluated. Based on the requirement, an ultra-capacitor energy storage system (UESS) is deemed as the suitable type of ESS for the EAF application. The design of UESS is described, and the preliminary experimental results are given.
Date of Conference: 5-9 Oct. 2008