Modelling of a PMSM accounting for ‘position harmonics’ and control in order to establish the possibility of reducing ripple and keeping highest possible efficiency

Research Project, 2023 – 2026

In this project, the possibility to reduce torque ripple and other sound emitting position waves (magneticflux/forcec) on stator teeth in order to reduce the sound emission form an electrical machine is investigated, the PMSM is in focus. Both theory studies as well as measurements are being conducted. An electrical machine is manufactured with the support of one industrial partner, i.e. Volvo Cars. Measurements are then being conducted both at Chalmers as well as at Alstom. In case the current injection methodology is successful it might be possible to avoid skewing of the machine.  This would lead to increased efficiency, lower cost as well as simplified recycling. The project is a PhD project, which is conducted in tight cooperation with Volvo Cars and Alstom, reinforced by a reference group consisting of the industry partners CEVT and AB Volvo.