Overview
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A choke coil is an electronic component use to prevent currents that exceed
the predetermined frequency. The heat generated by the iron losses of the
core and the copper losses of the coil inside the choke coil need to be
evaluated because of problems that can occur in the choke coil.
The loss distribution obtained with a magnetic field analysis can be used
as the heat source for a thermal analysis in JMAG-Designer.
This example presents the use of a thermal and magnetic field analysis
to obtain the temperature distribution using the iron losses and copper
losses in the choke coil as the heat source. |
Inductance of One-phase and d/q-axis Inductance
The heat generation density distribution of the core indicated in Fig.
1, the temperature distribution of the core indicated in Fig. 2, the temperature
distribution of the coil indicated in Fig. 3, and the maximum temperature
of each part indicated in Table 1.
The heat generation density is higher on the inside corners of the core
as indicated in Fig. 1. The iron losses that generate the heat are caused
by the flow of magnet flux concentrating on the shortest path through the
magnetic circuit. Furthermore, the temperature around the coil is hotter
than the temperature of the core as indicated in Fig. 2, Fig. 3, and Table
1. |
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