Evaluation of magnitude- and phase-correct unit-force transfer functions for the structural description of electrical machines

Issue title: Selected Papers from ISEF-2013

Guest editors: Paolo Di Barba and Słwomir Wiak

Article type: Research Article

Authors: Schröder, Michael^{a; *} | Franck, David^a | Hameyer, Kay^a

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: [email protected]

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

DOI: 10.3233/JAE-141951

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 46, no. 2, pp. 401-407, 2014