ABSTRACT
Electric arc furnace is a kind of electric furnace using electric arc heat to smelt metal. It can transform electric energy into the heat energy needed for heating by melting material by arc discharge. Generally speaking, the development of the electric arc furnace steelmaking technology is always related to electricity closely. So far, the characteristic of electric arc furnace has always been a research hotspot. The existing arc model includes the nonlinear resistance model, the harmonic power supply model, the nonlinear time-varying voltage source model, and the energy balance model. This paper puts forward a model of time-varying ac arc resistance based on the existing theory and the measured data and makes some analysis of the relevant features through the matlab simulation.
