Heat and resulting temperature distribution always has to be a Finite Element Solution. But if you just want to calculate power loss distribution, that can be done using BEM.
Yes, there are two ways. You can assign a constant volume current and then calculate the power loss, or you can use eddy current windings with a voltage source and obtain the resistance from the winding current.
Yes, but it depends on the thickness of the metal switchgear and how big the overall system is. Because it can take up quite a bit of computer time, you have to deal with it on a case to case basis.
For the electromagnetic portion of the solution, you can use either the Boundary Element Method (BEM) or the Finite Element Method (FEM) if you are performing a time harmonic (phasor) simulation. If you are performing an electromagnetic transient, the Finite Element Method must be used. For thermal analysis (static or transient), only the Finite Element […]
Although this might indicate a bad solution, it usually is an artifact of the nature of the contour plot which is exagerated by the plot being too coarse with respect to the geometric detail. To illustrate the nature of contour plots and artifacts such as this, consider the electrode (light yellow area bounded by black […]
Background on contour plots When we make a contour plot we set up a grid of x,y,z coordinates and calculate the field at those points. We then do interpolations to sketch out the lines that get plotted and displayed on the screen. The interpolations are simply a series of straight lines that connect points of […]
In streamlines, the test charge used has no mass, or velocity. This means it follows the path of the electric field. Effectively what you should end up with is a limited version of the E-field. To calculate the resultant curves, Coulombs law is used. Streamlines can be drawn off of a voltage potential, or from […]
For a 2D model, the total loss is given in W/m and torque in N*m per m. As the result is assumed to be continuous in the direction perpendicular to the two-dimensional model, the total loss in W or the total torque N*m is obtained by multiplying the loss in W/m or the torque in […]
INTEGRATED’s CAE tools create two temporary scratch files during analysis. Prior to performing an analysis you can check the scratch file size by using the command ProblemSize under the Element submenu. This command displays the size of each scratch files in Mega bytes. The size is related to the number of elements in your model. […]
MAGNETO has the ability to input a magnetic loss curve in the Material Table and then assign the material to the model’s geometry. The magnetic loss curve combines hysteresis loss and lamination loss (eddy current losses in the laminations) information. These loss curves are available from the material supplier. The software requires that you place […]