Analysis of temperature rise in reactors using coupled multi-physics simulations

The ventilation system design of dry-type air-core reactor is a complex task that must determine the thermal loads to achieve the maximum insulation material exploitation. In this paper, the temperature rise in reactor is due to Joule´s losses and heat dissipation by air convection, convection and radiation. The Joule´s losses calculated by coupled magnetic field-circuit analysis are used as the input for the thermal field by finite-element analysis, which is directly coupled with fluid analysis. Finally, the temperature distributions of reactor can be calculated. Therefore, the thermal performance analysis of air-core reactor could be conducted in the early design stage to guarantee the insulation material requirements.