Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Combination of Thermal Subsystems Modelled by Rapid Circuit
  Transformation   This paper will deal with the modeling-problem of combining thermal
subsystems (e.g. a semiconductor module or package with a cooling radiator)
making use of reduced models. The subsystem models consist of a set of
Foster-type thermal equivalent circuits, which are only behavioral models. A
fast al-gorithm is presented for transforming the Foster-type circuits in
Cauer-circuits which have physical behavior and therefore allow for the
construction of the thermal model of the complete system. Then the set of
Cauer-circuits for the complete system is transformed back into Foster-circuits
to give a simple mathematical representation and applicability. The
transfor-mation algorithms are derived in concise form by use of recur-sive
relations. The method is exemplified by modeling and measurements on a single
chip IGBT package mounted on a closed water cooled radiator. The thermal
impedance of the complete system is constructed from the impedances of the
sub-systems, IGBT-package and radiator, and also the impedance of the package
can be inferred from the measured impedance of the complete system.

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The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
18
The categories of this paper are: econ