48V Vernier Machines in the Context of Future Concepts for Light eMobility

Autoren

Dr.-Ing. Bernhardt Lüddecke, Dipl.-Phys. Andreas Schönborn, Continental Powertrain, Nürnberg;
Dominik Thyroff, MSc, Prof. Dr.-Ing. Ingo Hahn, Friedrich Alexander Universität, Erlangen

Zusammenfassung

Year upon year more people live in urban areas, megacities and other spaces that suffer from ambient air pollution. Health and quality of living can be significantly reduced. This can even be a stronger driver for change than future legislation demands. Reshaping city traffic requires a new mix of transportation. Electric two-wheelers will find their spot, e.g. for the first or last mile of transportation or within sharing concepts. Adapting proven and mature automotive technology paves the way for this transition.

48V technology has gained a lot of attention in the automotive sector due to its potential to meet the rising demand for sophisticated electric support functions. Continental has already developed a wide variety of 48V automotive products, including belt  startergenerators, high speed electric compressors, and a host of fluid management applications. Transferring this technology to the global non-automotive market is a promising opportunity.

Propulsion systems for eScooters & eMopeds often comprise small high-speed machines, combined with a gear or a gearbox to adapt torque and speed. However, using gears involves several challenges like Noise, Vibration, Harshness (NVH), lubrication and increased weight. Due to the similarity of magnetic gears and permanent magnet machines, new direct drive concepts with magnetic gearing effect were investigated by several researchers with the goal to increase the torque of direct drives [1-3]. Among those machines, the ‘Vernier’-design offers a promising base for 48V high-torque-lowspeed machines with an outstanding torque to volume ratio [1, 4].

This paper compares the performance of different Vernier machines with corresponding standard Permanent Magnet Synchronous Machine (PMSM) layouts. Those investigations are put into the context of future mobility concepts and their requirements. For instance, Continental’s Multi Modal Journey Strategy is outlined to optimize city traffic and travel time. Two-wheelers are part of this data driven service approach, leveraging the synergies of powertrain, cloud and connectivity solutions [5].

Mitglieder-Login