1, familiar with the basic operation of ANSYS software.
2. Modeling. Electromagnetic system can be modeled by modeling in ANSYS preprocessor, which can be simplified appropriately. It is necessary to build a large air body to surround the entire electromagnetic system.
3. Select the element type. SOLID97 element in ANSYS software can couple electromagnetic field and temperature field in sequence, so this element is selected for magnetic field analysis. After selecting the unit, set the degree of freedom. In this respect, you can read the introduction of SOLID97 unit in the help file of ANSYS in detail. The coil in the electromagnetic system is a load-bearing coil, so the degrees of freedom of its SOLID97 unit should be AX, AY, AZ and CURR. For other components, choose AX, AY, AZ and VOLT to calculate the eddy current field.
4. Material props. The electromagnetic system includes silicon steel sheet, magnetic separator, coil, skeleton and air body, and each part should be set with corresponding material properties. The material properties involved in this analysis include relative permeability, resistivity, thermal conductivity and convective heat dissipation coefficient. Please refer to the relevant material manual for these parameters. For the parameters affected by temperature, it is necessary to set their relationship with temperature change.
5. Specify corresponding materials, coordinate systems and real parameters for each part of the model. For the coil unit, it is necessary to define real parameters, including coil cross section, turns, volume, current direction vector, symmetry coefficient and filling coefficient (the coil volume can be obtained directly through the established model). The unit coordinate system of the coil must be a cylindrical local coordinate system. Other parts can use the global coordinate system without real parameters.
Step 6 engage. How to divide it, you need to try it yourself. The denser the grid, the more accurate the calculation, but the calculation speed is very slow, which requires a lot of computer memory and needs constant debugging.
7. Current degree of freedom of coupling coil unit (coupling /Ceqn). Select all nodes of the coil for coupling.