Permanent magnets rotor for high-powered synchronic motors for hybrid vehicles performance.

New and innovative aspects

The circular arch shape of the permanent magnets layout of the new rotor, improves the reluctant component of the torque, forming a double layer magnetic field.

Moreover, the use of rare earth elements powder agglomerated magnets (elements like cerium, yttrium or neodymium) results energy values similar to those obtained with known sintered magnets.

Main advantages of its use

• The use of rare earth elements powder agglomerated magnets shows a better behaviour than sintered ones in the face of temperature increases.
• 20% more torque versus the current rectangular magnets rotors.
• Cost reduction due to less use of rare earth materials, reduced weight and better energy efficiency.

Specifications

Permanent magnets rotor for use in synchronic three-phase motors for hybrid vehicles. There are two magnetic layers in the rotors that generates the motor action, disposed as an arch of a circular segment geometrically optimized, improving the reluctant and magnetic components of the torque.

To set both magnetic layers, rare earth elements powder agglomerated magnets are used, instead of sintered ones, allowing different geometry that improves the reluctant torque. The magnets used are made with agglomerate materials, conforming magnets with less materials and similar energy values than does used currently.

The combination of the double magnetic layer and the characteristics of the new magnets, the new rotor obtains a 20% more torque than known rotors. The weight of the motor, its cost, and the economical loses are also reduced.

Applications

Electric motors for hybrid and plug-in vehicles.

Intellectual property status

Protected by patent P20173042.

Current development status

In use, test results available.

Desired business relationship

Commercial agreement; License agreement; Technical cooperation: further development; Technical cooperation: testing new applications; Technical cooperation: adaptation to specific needs.