On magnetization deviations as the dominant cause for vibration harmonics in the spectrum of a PMSM drive

Archives of Electrical Engineering, pp. 719–730

Abstract

Production deviations have a remarkable effect on the radiated sound of electrical machines, introducing additional signal components besides the fundamental field waves which significantly change and enrich the subjectively perceived sound characteristic. In literature these harmonics are mainly traced back to dynamic eccentricity, which modulates the fundamental fieldwaves. In this paper a thorough mechanic and electromagnetic analysis of a modern, well-constructed traction drive (permanent magnet synchronous machine) is performed to showthat for this typical rotor configuration dynamic eccentricity is negligible. Instead, deviations in the rotor magnetization are shown to be the dominant cause for vibration harmonics.

Authors 6

1. Markus Jaeger Aachen Institute of Electrical Machines (IEM)

   RWTH Aachen University

   Affiliation as printed

   Institute of Electrical Machines (IEM), RWTH Aachen University, Germany

2. Pascal Drichel Aachen Institute of Systems Engineering and Machine Elements (MSE)

   RWTH Aachen University

   Affiliation as printed

   Institute of Systems Engineering and Machine Elements (MSE), RWTH Aachen University, Germany

3. Michael Schröder Aachen Institute of Electrical Machines (IEM)

   RWTH Aachen University

   Affiliation as printed

   Institute of Electrical Machines (IEM), RWTH Aachen University, Germany

4. Joerg Berroth Aachen Institute of Systems Engineering and Machine Elements (MSE)

   RWTH Aachen University

   Affiliation as printed

   Institute of Systems Engineering and Machine Elements (MSE), RWTH Aachen University, Germany

5. Georg Jacobs Aachen Institute of Systems Engineering and Machine Elements (MSE)

   RWTH Aachen University

   Affiliation as printed

   Institute of Systems Engineering and Machine Elements (MSE), RWTH Aachen University, Germany

6. Kay Hameyer Aachen Institute of Electrical Machines (IEM)

   RWTH Aachen University

   Affiliation as printed

   Institute of Electrical Machines (IEM), RWTH Aachen University, Germany