South Beloit, Ill. – Bauer Gear Motor’s (a member of the Altra Industrial Motion Group)PMSM (permanent magnet synchronous motors) fulfill the requirements of the soon-to-be implemented IE4 (Super Premium Efficiency) classification. The motors have the potential to achieve energy savings of up to 40% compared to an IE2 inverter-driven squirrel cage motor. 
The PMSM series is an environmentally friendly range of motors, employing a highly efficient rotor design that integrates embedded permanent magnets made from rare-earth material, instead of the squirrel-cage rotor found in induction motors. This design offers a number of key benefits such as reducing heat losses from the rotor by 100%, total losses by approximately 25%, and increasing total efficiency by 10% or more.
PMSM synchronous motors offer considerably improved efficiency when compared to induction motors even under partial load conditions, and extremely high efficiency under rated operating conditions. They also have considerably higher power density, which, for geared motors, yields higher system efficiency with minimal installation volume, in addition to reduced weight. PMSM drives can also produce higher torques for the same installation volume as conventional induction motors, a factor that allows cost saving through the ability to specify a smaller motor size in some applications.
Bauer’s PMSM motors maintain high efficiency levels within a wide partial load range, up to a load factor of 1:5. The motors can be used to cut inventory significantly for large plants and third party stock facilities. Offering a replacement for a wide variety of different asynchronous geared motors in the field can result in a further reduction in costs for inventory, logistic and maintenance.
The PMSM motors are available in ventilated and non-ventilated configurations across the power range from 0.55kW to 15kW. They operate on 380V to 500V power supplies, and are rated for inverter duty, offering an extended speed range with constant torque.
The low operating and maintenance costs of the PMSM motors allows them to provide the optimum energy saving drive for use on fans, pumps and compressors, and for constant torque applications such as elevators and conveyors.
For more information, visit www.bauergears.com.
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