This tutorial demonstrates an electromagnetic-thermal co-simulation of three bus bars that are within a bounding box of air and which are running at a single operating point. The bus bars are made of a copper material and are solid windings on a single parallel branch. Each one carries 7070A current at 60 Hz frequency, but each at a different phase (0, 120, and 240 degrees).

Mechanical receives Maxwell's time-averaged losses and applies them as steady losses to the bus bar components of its model. It then executes the thermal analysis and sends the calculated material temperatures back to Maxwell.

When the temperature data is sent back to Maxwell, it is mapped to the bus bars, which are made of a temperature-dependent material. The temperature-dependent material properties are updated and used in Maxwell's next computation. The co-simulation proceeds until the solution converges.