ReMoS – Effective reluctance machine for emission-free mobility without rare earth

  • Contact:

    Dr.-Ing. Florian Wittemann

  • Partner:

    KIT: Institut für Technische und Numerische Mechanik; Elektrotechnisches Institut

  • Startdate:


  • Enddate:


A novel concept is researched within ReMoS, to increase the power density and efficiency of the synchronous reluctance machine (SRM). This realizes an alternative to electrical machines with rare earth in the traction sector, which usage is extremely questionable in ecologically and politically sight. ReMoS addresses three disciplines with innovative solutions: thermal, strength and magnetic flux. By using internal cooling, the current power density can be increased by up to 50 % compared to conventional motors. The production of the rotor with a new approach made of a hybrid metal-plastic construction, enables increased rotor strength with simultaneous magnetic optimization, expecting a torque increase of 10 % to 20 % compared to conventional SRM rotors. By integrating variable magnets (without rare earth), the efficiency field can be dynamically adjusted during operation. An intelligent magnetization strategy optimizes and shifts the highly efficient area in the torque-speed field to the current requirements in the WLTP cycle, but also on the road. The result of the combination of these three approaches and their interdisciplinary research is a solution for future mobility without rare earth.