e-NVH response synthesis of electric motors based on stator teeth FRF measurements

Issue title: Selected papers from the International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering ISEF 2019

Guest editors: Paolo Di Barba, Maria Evelina Mognaschi and Sławomir Wiak

Article type: Research Article

Authors: Pile, Raphaël^{a; b; c;} | Le Besnerais, Jean^a | Devillers, Emile^a | Degrendele, Karine^a

Affiliations: [a] EOMYS Engineering, Lille-Hellemmes, France | [b] University of Lille, Arts et Metiers ParisTech, Centrale Lille, HEI, EA 2697 - L2EP -Laboratoire d’Electrotechnique et d’Electronique de Puissance, Lille, France | [c] University of Artois, EA 4025, Laboratoire Systèmes Électrotechniques et Environnement (LSEE), Béthune, France

Correspondence: [*] Corresponding author: Raphaël Pile, Eomys Engineering (Lille-Hellemes, France); and University of Artois - LSEE (Béthune, France); and University of Lille - L2EP (Lille, France). E-mail: raphael.pile@eomys.com

Abstract: The analysis of noise and vibrations under electromagnetic excitations (e-NVH) in electrical machines requires to study the stator mechanical response when excited by Maxwell stress waves. In particular, the notion of unit-wave Frequency Response Function (FRF) is often used in e-NVH simulations to model the mechanical response under electromagnetic excitations and troubleshoot noise issues. However, it is not possible to directly measure the unit-wave FRF on the electrical machines and validate the model. Instead, the Experimental Modal Analysis (EMA) is often compared to a Finite Element (FE) model in order to fit the numerical parameters (damping, boundary conditions, etc.). This paper is presenting a complementary approach to fully numerical e-NVH analysis. It is a new hybrid methodology based on experiments for the mechanical FRF and simulation for the magnetic excitations. This is performed with dedicated experimental measurements and post-processing. The new methodology builds an equivalent unit-wave FRF from experimental measurements. The methodology is validated with the diagnose of electromagnetic noise issues for an experimental benchmark Surface Permanent Magnet Synchronous Machine (SPMSM).

Keywords: Magneto-mechanical analysis, electrical machine, vibration, SPMSM, magnetic force, frequency response function

DOI: 10.3233/JAE-209511

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 64, no. S1, pp. S143-S154, 2020