Creating PM Ducts (UPM Core)

All PM ducts of a U-type IPM Core are created by setting the value of InfoCore to 2. Subtracting a PM duct set, the software can create a poly-layer U-type IPM core.

A U-type PM duct set, together with a U-type IPM core, is shown below. The parameters of the additional ducts can be totally different from those of the original core

If you subtract the additional PM duct set from the core, you can get a core with two-layer PM ducts. Continuing to create and subtract additional PM duct sets, the software can create an IPM core with an arbitrary number of layers of PM ducts. The figure below shows an IPM core with four-layer PM ducts. Notice that when ThkDuctIn = 0, the PM ducts will have only the outer parts, and when ThkDuctOut = 0, the PM ducts will have only the inner parts.