Efficient Simulation Method for Current and Power distribution in Electrical Furnaces

Efficient Simulation Method for Current and Power distribution in Electrical Furnaces

Academic Coordinator |  Mª Pilar Salgado Rodríguez. Affiliated researcher of ITMATI. Associate Professor at the Department of Applied Mathematics (USC)

Business Coordinator |  Svenn Anton Halvorsen.  Senior Researcher of Applied Mathematics. Teknova AS

Description | Mathematical modelling has successfully been applied for various aspects of metallurgical processes. Nevertheless, due to all complexities in the processes, the design and operation of smelting furnaces are still to a large degree empirically based, and several process variations are not properly understood. One identified knowledge gap is an accurate understanding of the effects of 3-phase alternating current, including how the associated power distribution governs the chemical reactions and temperature distribution. An efficient method for computing 3-phase current paths and power distribution is a required step to close this knowledge gap. 

Previous simulations within metallurgy have often applied direct current (DC), to study large, 3-phase, smelting furnaces. Such DC simulations are valid for “only one instant of time” and it is not straightforward to interpret the results for real furnaces. We have shown that an approximate harmonic solution for 3-phase alternating currents (AC), can be described as a superposition of three DC solutions, taking the phase shift between the three electrodes into account. This simplified AC-model will be presented at the IFAC MMM symposium, Vienna, 31 August - 2 September 2016.

The ESGI shall focus on comparing the simplified model with full AC 3-phase simulations including electromagnetic induction. The simplified AC approximation is valid for small furnaces. We now want to clarify how well it works for large ones.

Scope | Thermoelectric problem