Design of a High-Speed Permanent-Magnet Machine for Electrically-Assisted Turbocharger Applications with Reduced Noise Emissions

Adrien Gilson (1) , Guillaume Verez (1) , Frédéric Dubas (2) , Daniel Depernet (2) , Christophe Espanet (1)

1 MMT - Moving Magnet Technologies S.A
2 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)

This paper addresses the issue of mitigating the noise emission of high-speed permanent-magnet (HSPM) machines. HSPM machines are increasingly used in a large field of applications for their power density and compactness. However, the increase of the speed tends to intensify the noise emissions where more and more applications require a quiet operation. The focus of this paper is to propose a HSPM structure to cope with this problem that is also well-suited to competitive markets where cost is an important factor. First, high-speed machine topologies are presented in the general case and a comparison between a reference PM slotted structure with tooth-coil windings and a slotless structure toroidally wound is made. Then, general considerations are given regarding the design parameters that impact the vibrational behavior with an analytical description and a three-dimensional (3-D) mechanical finite-element analysis (FEA). Finally, the noise emission and losses for both machines are compared showing that the slotless toroidal machine can be a good candidate for this field of applications.

Domaines: Energie électrique; Thermique [physics.class-ph]; Automatique / Robotique; Mécanique des fluides [physics.class-ph]

Adrien Gilson, Guillaume Verez, Frédéric Dubas, Daniel Depernet, Christophe Espanet. Design of a High-Speed Permanent-Magnet Machine for Electrically-Assisted Turbocharger Applications with Reduced Noise Emissions. International Electric Machines & Drives Conference, May 2017, Miami, FL, United States. ⟨hal-02131017⟩