Volume 46, Number 4, 2005
Electrical Machines Computer Simulation
by Using Circuit-Field Models
Ioan-Adrian VIOREL, Loránd SZABÓ and Ilinca TOMESCU
Abstract: The high performance personal computers (PCs) made possible an impressive development
in the domain of the electric machines mathematical models. The circuit-field models become more
sophisticated and are used more frequently in computing the electric machines characteristics. In the
paper a personal point of view concerning the state of the art and the trends in this domain is presented.
Key words: electric machines, circuit-field models
The personal computers (PCs) had a
impact on the humanity and
particularly on the engineering domain. All
R&D engineers, and not only, are fully
dependent on PCs and the way of doing their
work was totally changed compared with
what happened only 20 or 30 years ago. By
using PCs and the more and more advanced
existing computer packages, everybody from
the R&D put a very high stress on computer
simulation avoiding in this way expensive
prototyping and testing.
Nowadays, the models become more
sophisticated taking fully into account some
specific aspects which thirty years ago one
could only dream about. Today, everybody
can develop his own programs or can use
commercially available packages. In the
following paper a personal point of view will
be presented concerning the way one should
use and/or develop complex coupled models
in the domain of electric machines.
Electrical machines models can be of
circuit or circuit-field type, both of them fully
considering the change of the rotor position,
if necessary, due to the rotor movement.
eventually of functions that describe the
inductance variation versus of magnetizing
current and/or rotor position, if necessary.
The machine parameters, mainly the
inductances, are obtained usually by testing
the machine. No dimensions are