Retrofit of a hot rolling mill plant with three-level active front end drives.

This paper analyzes the advantages of a selective retrofit of the drives in a hot rolling mill plant. More specifically, three cycloconverter-based drives of the finishing rolling mill in the plant are proposed to be replaced by back-to-back converters, thus enabling an efficient management of the active and reactive power flows, and improving the control of harmonic emissions. Three-level convert...