Energy saving potential does not stop at optimising the consumption of individual motors. Prudent efficiency measures should also consider the complete drive system together with the application process. Apart from optimising materials and the design of its electric motors, Nord employs such technologies as high-frequency operation, automatic magnetisation adjustment, energy recovery, and intermediate circuit coupling.
Intelligent control is one way to save energy. For asynchronous motors, frequency inverters generally maintain the magnetic flux level required for yielding the full torque over the whole speed range, thus causing unnecessary losses during partial load operation. Nord’s SK 200E, SK 500E, and SK 700E-type frequency inverters can save resources by automatically reducing magnetisation when the motor is operated under partial load for potential energy savings of up to 30 %.
For its new range of IE2 motors, Nord uses more active material in the stator and higher quality sheet metal that helps reduce losses. Furthermore, an increased copper filling factor and a reduction in the size of the coil cores not only result in increased efficiency, but also in a reduction of waste heat and a prolonged service life for the drive technology. In addition, greater power reserves allow the use of smaller motors for many applications.
Online-Info www.cpp-net.com/2310420
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