Medium-sized motors need active cooling, this can be implemented
with a fan or with a water cooling.
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The coil ends of large motors and generators are mechanically
supported in a complex manner and stiffened with one another. It is
very complex to perform a flow or thermal simulation for such some
geometry.
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The flow and thermal processes in large motors and generators are
extremely complex and therefore cannot be satisfactorily described by
flow and heat source lumped circuit.
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Air conditioning or decontamination of a room is important enough to be dimensioned with CFD right from the start of the project. These enable
to calculate and to visualize the flow conditions in the entire room and the dissemination of the contaminants.
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Mr. Segond has been working as a freelance consulting engineer since 2011.
Back then he benchmarked the different CFD tools and
he decided to go with FloEFD.
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The consulting engineer Mr. Segond from our engineering office gave a
presentation at the Siemens Simcenter Conference Europe 2019 in Amsterdam
about the cooling of an Electronics Control Unit
Mr. Karim Segond,
our freelance expert for 3D CFD flow and thermal calculations,
was interviewed during the Simcenter
Conference.
Mr. Guenter Zwarg
is our expert for the ventlation and cooling of
large motors and generators.
Compliance with the maximum allowed temperatures of the IGBT, diodes and
MOSFET Chips is necessary, otherwise the chips are exposed to thermo-mechanical loads; this would have a drastic impact on the life
expectancy of the materials. An effective cooling circuit is essential in
order to achieve the highest power densities in small spaces. Here, the 3D
Computational Fluid Dynamics is an ideal tool. Possible hotspots can be localized with CFD calculations and thus avoided.
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At switching frequencies below 10 Hz, the ON and OFF switching is so
slow that it causes a time-dependent temperature behavior of the
transistors.
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