BMWi joint project TOPMAGNET

Until now, standardized magnet geometries have generally been used in the development of new electric drives. The magnets are arranged in specific, familiar patterns such as a stacked structure or a magnet V arrangement. The design is therefore based on intuitive, experience-based patterns. Complex iteration loops are necessary in order to meet all requirements in terms of performance, efficiency, acoustics and mechanical strength, whereby the magnetic material is not utilized homogeneously in the arrangements known to date.

The aim of the joint project is to develop new, highly efficient rotor topologies for electric drive machines. Innovative numerical optimization methods are to be used to identify highly efficient magnet-iron-air distributions that exhibit high performance, good acoustic behaviour and high mechanical strength with low material input. A tool chain is to be developed for the suitable evaluation of these new rotor layouts, with which the machine behavior can be calculated holistically. In order to be able to use new irregular magnet geometries, the current manufacturing processes must be further developed. A prototype test will be carried out to validate the process.

01.06.2016 - 31.05.2019

• Volkswagen AG
• MS-Schramberg Sinter GmbH & Co. KG
• University of Kassel, Department of Vehicle Systems and Fundamentals of Electrical Engineering

Federal Ministry
for Economic Affairs
and Technology

on the basis of a resolution
of the German Bundestag