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Technical publications

ABB review 1/2016: Driving force

World’s first magnet-free IE5 motor for fixed speed applications

During the present decade, the minimum efficiency for low voltage motors in most regions of the world will be harmonized to a higher level called IE3 (as defined by IEC 60034-30). IE3 is considered to be the maximum practical efficiency level for induction motors. With motor efficiency now harmonized, focus is turning to machines. Machine manufacturers must face two main questions: How can they further leverage energy efficiency for the entire machine, and how will they seek to differentiate themselves from their competitors when it comes to energy efficiency?

Over the last five years, efforts to overcome the practical limits of induction motor technology made rare-earth permanent-magnet motors more and more popular. There are however cost and sustainability issues related to these materials. ABB is seeking to offer sustainable and cost-efficient high-efficiency motor alternatives for both variable-speed and fixed-speed applications.

Our recommendation is SynRM (synchronous reluctance motor) technology. SynRM is available either totally without magnets or with sustainable ferrite magnets. The latest addition to SynRM family is the first magnet-free IE5 motor with line-start capability: DOLSynRM. A 1.1 kW IE5 DOLSynRM motor was presented at EEMODS in Helsinki, in September 2015 and attracted much attention. Sustainable and cost-efficient ultrahigh efficiency motors have become reality! Now it is up to machine  manufacturers to take advantage of them. DOLSynRM showcases how ABB is helping its customers maintain their competitive edge while taking responsibility for the future.

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