Definitions of Computational Electromagnetics and IEEE Standards 1597.1 and 1597.2
“The Building Block” of the Computational Electromagnetics Model
The objective of computational electromagnetics (CEM) is to create a representation of real-life problems that can be examined and analyzed by computer resources, as an alternative to building a system, exciting it, and measuring the generated fields. Once the problem has been defined, the important physical characteristics must be identified. All CEM models can be broken into three parts: the source of EM energy, the geometry of the model components, and the remaining problem space. The following elements of a physical CEM model should be taken into account during the simulation:
The Sources of EM Energy
- • Source - Sources include both intended and unintended sources that electromagnetically couple to and drive conductors (such that energy is conducted into areas that can energize and drive the electric machine to make a correct operation, or can cause problems with the correct operation of the victim devices).
- • Physical Source Modeling - Sources may be characterized by their electrical size, the distance from materials with which they interact, their geometry, and the excitation applied to them.
- • Source Excitation - Like fully specified circuit model sources, field sources must also be defined by their amplitude and impedance.