[Webinar] Synchronous reluctance motor: A proven path to magnet-free IE5 efficiency levels

This presentation focuses on synchronous reluctance magnet-free motor technology and its principles of operation.

We aim to demonstrate that a synchronous reluctance motor, free from permanent magnets, can achieve the same IE5 efficiency level as a permanent magnet synchronous motor while also maintaining the robustness of an induction motor. This creates an ideal balance between the two technologies for achieving IE5 efficiency.

Additionally, the webinar will explore the potential for upgrading an existing IE3 induction motor with an aluminium rotor to a higher efficiency level by incorporating synchronous reluctance technology into the rotor design.

Date & Time

30 September 2025; 15:00 - 16:00 CET

Speaker

• Bojan Jakovljević, Končar – Motors and Electrical Systems

Recording

Presentation (PDF)

You can download the slide deck at the bottom of this page.

Key takeaways

• Replacement of old motors with IE5 synchronous reluctance motors is an excellent investment with short ROI, even if current regulations do not require IE5 motor efficiencies.
• During the replacement of old motors, dimensions should be kept the same. Two good options are the IE5 SynRM motor with a VSD and the IE4 asynchronous motor with a copper rotor, without a VSD.
• Synchronous reluctance motors are future-proof for IE5 efficiency rating and future regulations due to good material cost efficiency and absence of rare earths.
• It is possible to upgrade existing IE3 motors with aluminium rotors to higher efficiency levels by using a synchronous reluctance rotor or a copper rotor.