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157 - Analysis of Eddy Currents in an IPM Motor Using the Gap Flux Boundary
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Module:DP,FQ |
2011-01-17 |
The eddy current loss of magnets cannot be ignored with the increasing
use of highly conductive magnets as well as the need for faster and smaller
motors. One way to decrease the eddy current loss is to use divided magnets.
Ways to reduce the eddy current loss by dividing magnets can be examined
using analyses.
This example presents the use of a magnetic field analysis to obtain the
variations of eddy current loss in magnets by the number of divisions using
the gap flux boundary condition. The analysis results can be obtained more
efficiently reducing the time required for the standard transient response
analysis by using the gap flux condition.
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84 - Analysis of Electromagnetic Forming
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Module:DP |
2011-01-17 |
Electromagnetic forming is a method of forming where a powerful magnetic
field is created with a large current produced instantly in a coil to cause
deformation in the tube when the eddy currents and magnet fields interact.The
behavior of the deformation in electromagnetic forming is known for being
extremely difficult to analyze because the forming is done in a very short
amount of time, and the dynamic deformation is complicated.In JMAG, the
dynamic deformation can be estimated by evaluating the Lorentz force density
that occurs in the tube.This example analyzes the Lorentz force density
produced in a tube when a current flows in the coil.
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22 - Analysis of the Eddy Current in the Magnet of an IPM Motor
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Module:TR |
2011-02-28 |
Along with the increasing use of highly conductive magnets as well as the
increasing needs for small-sized motors that have high-speed performance,
eddy current loss in a magnet is now an important issue. One way to decrease
the eddy current loss is to divide a permanent magnet. This note presents
the use of magnetic field analysis to evaluate the change in the eddy current
loss in the divided magnet by changing the number of magnet divisions.
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