**Acknowledgements**

coercivity (for Alnico), the magnetic flux is not sufficiently strong to cross the air gap. Different rotor configurations (with concentrated flux or halback array) need to be considered—which means that a topology with more than one pair of poles is requested. To prove this, one can investigate the field lines and the flux densities depicted in **Figure 16**, given within the active

**Figure 19.** Investigation of the MG field lines and flux density distribution, when ferrite (top) and Alnico (bottom)

As 15 years have passed since the first efficient MG proposition, we could expect, in the next years, improvements in the field of MGs, especially for the ones with variable transmission ratio, which could be extremly useful in transportation and aeronautical domains. With the advancement in the field of materials, for rare earth materials and ferromagnetic steel, the future of fully electromagnetic propulsion systems could be considered as a viable industrial

This chapter proposes an overview of the challenges in EV application, where the speed limits were pushed forward in the last decade. Practically, all the car manufacturers are proposing mobility solutions based on electrically propelled traction systems, which are limited because of the drawbacks of the mechanical gear, which needs to be continuously lubricated, presenting

magnets were considered.

**4. Conclusions**

solution, and not only a new research subject.

parts of the MG while ferrite or Alnico materials are used (**Figure 19**).

9018 Modeling and Simulation for Electric Vehicle Applications

This work was supported by a grant of the Romanian National Authority for Scientific Research and Innovation, CNCS—UEFISCDI, project number PN-II-RU-TE-2014-4-1143 (TE30/2015).
