Affiliations: [a] Institute of Electrical Machines, RWTH Aachen
University, Aachen, Germany | University of Pavia, Pavia, Italy | Łódź University of Technology, Łódź, Poland
Correspondence:
[*]
Corresponding author: Michael Schröder, Institute of
Electrical Machines, RWTH Aachen University, Schinkelstrasse 4, D-52056
Aachen, Germany. Tel.: +49 241 80 97667; Fax: +49 241 80 92270; E-mail:
michael.schroeder@iem.rwth-aachen.de
Abstract: The structural dynamic simulation of electrical machines is an
appropriate tool to improve electrical machines in an early design stage, in
consideration of their acoustic and vibration properties. In order to reduce
the calculation effort, a time efficient method is desirable. Unit-force
transfer functions describe the linear behavior of the structure when it is
excited with unit-force waves in the machine's air gap. In this paper,
magnitude- and phase-correct transfer functions are simulated numerically for
an exemplary machine and then verified by measurements. With those transfer
functions, the structural response of the machine can be calculated fast for
different operating points.
Keywords: Structural dynamic simulation, structural description, electrical machine, acoustic, vibration, unit-force, complex transfer function
