A new DC electric arc furnace with new technology, has been developed by Usinor-Sacilor, Nippon Steel Corp. and Daido Steel after the joint research and development since 1989.
Also, Daido has a lot of experience in control system of AC electric arc furnace.
Daido has developed an original control system for DC electric arc furnace.
This paper is described about a basic logic of the control system for DC electric arc furnace.