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Permanent-magnet motor surpasses IE4 standard
08 May 2014
Low-voltage motors in energy efficiency class IE5 should have approximately 20% lower losses than IE4 motors. WEG has now launched a permanent-magnet motor that fulfils this demanding requirement, making it one of the first to qualify for the IE5 Ultra Premium Motor designation.
With losses roughly 20% lower than Super Premium models, it is among the first Ultra Premium motor on the market that fulfils the present criteria for the potential IE5 energy efficiency class. This makes the W22 permanent-magnet motor one of the most efficient electric motors currently available world-wide.
Using innovative design, the W22 permanent-magnet motor combines unique high efficiency with compact size. Along with raising efficiency, WEG optimised motor performance to achieve lower noise and vibration emissions as well as especially low maintenance.
The new permanent-magnet motors in the W22 series are AC synchronous motors driven by CFW11 frequency inverters. The CFW11 frequency inverters have specific software for open-loop speed control of permanent-magnet motors. The software is based on a special drive strategy designed to maximise the torque per ampere. This approach makes the combination of a W22 permanent-magnet motor and a CFW11 frequency inverter a very efficient drive system that is able to deliver constant torque over the entire operating range.
"Energy efficiency is high on the industrial agenda, with the EU Motor Efficiency Regulations coming into effect in 2015, stipulating that IE3 induction motors, or alternatively IE2 motors driven by frequency inverters, must be used in industrial applications,” says Marek Lukaszczyk, European Marketing Manager at WEG. "We’re delighted to far exceed the regulations with our new permanent-magnet motor and it’s another example of how we’re pushing boundaries and going one step further to help engineers maximise the energy efficiency of their processes.”