Finite-element analysis can be started after the mesh generation is completed. A series of finite-element runs with different rotor positions and/or different values of phase currents can be accomplished by using the Multirun engine. Several parameters used for the actual analysis can be controlled from the FEA properties accessed from the 'Finite Element Analysis' menu. Visual settings can also be adjusted. |
Important parameters that control the iteration are the tolerance levels, CG or BCG method of solution to the matrix equation Ax=B, the relaxation parameter, and, the type of quadrature integration for higher order meshes. After completion, several settings can be adjusted for visualization including the color maps and number of sub-colors in each color map. Several results are available for inspection using the Graph module.
The results that are of interest such as the magnetic flux density and magnet field intensity are obtained from the magnetic vector or scalar potential. The curl of the potential provides the flux density. The potential is shown below for a small 6 slot 4 pole motor with windings energized. The vector or scalar magnetic potential is not a physical quantity, it is used as a mathematical tool to arrive at the flux density and other parameters of interest.
Scalar magnetic potential which is the output of electromagnetic FEA in Samarium