Synchronous reluctance (SynRM) motors developed by ABB now meet the new IE5 ultra-premium energy efficiency class defined by the International Electrotechnical Commission (IEC).

The IE5 ultra-premium SynRM motors offer up to 50% lower energy losses and significantly lower energy consumption than the commonly used IE2 induction motors. ABB first introduced SynRM technology in 2011 and case studies in industrial installations have demonstrated energy savings of up to 25%, depending on the Source: ABBSource: ABBapplication.

The IE5 level of efficiency is made possible by the SynRM design, which combines the performance advantages of permanent magnet technology with the simplicity and service-friendliness of an induction platform. To ensure an environmentally friendly design, the motors do not feature rare earth materials like permanent magnets. Additional features include lower bearing and winding temperatures for enhanced reliability and long life, and reduced motor noise for a better working environment.

These motors can be used in a range of demanding industrial applications where they offer accurate control and high efficiency across the whole speed range, even at partial loads. This makes them an ideal upgrade option for standard induction motors in pumps, fans and compressors as well as in more exacting applications like extruders, concha mixers, winches and conveyors. IE5 SynRM motors are an easy replacement for induction motors as they have the same size and output power, so no mechanical modifications are required.

The IE5 SynRM motors meet the requirements of the efficiency class defined in IEC TS 60034-30-2 and are available with output power of 5.5 to 315 kW in frame sizes IEC 132-315. They can be specified as part of a high-efficiency motor and drive package with ABB variable speed drives.

To contact the author of this article, email engineering360editors@globalspec.com