NovaTorque, Inc. has introduced 900 RPM versions of its 1.5, 2, 3 and 5 hp models. The new models provide a full load motor-only efficiency rating of 92% to 94% compared to approximately 82% to 87% for conventional AC induction motor ratings. Additionally, NovaTorque motors maintain high efficiency under partial load (AC induction motors do not), making NovaTorque motors ideal for variable speed fan applications. The efficiency advantage of a 900 rpm NovaTorque motor vs. an 8-pole 900 rpm AC induction motors can grow to 20 points or more at half-rated speed in such applications. That’s a 67% reduction in motor losses (wasted energy).
An additional benefit of NovaTorque’s unique flux focusing stator and rotator technology is the ability to often be one full frame size smaller than conventional induction motors, providing substantial weight and space savings.
The NovaTorque motor achieves this efficiency gain, and smaller size with an all-ferrite (vs. rare earth) magnet design, which provides a substantial cost benefit over conventional permanent magnet motors using costly rare earth materials.
NovaTorque motors are packaged in standard NEMA frame sizes and mounting dimensions for easy substitution of AC induction motors. NovaTorque motors are compatible with readily available variable frequency drives (VFDs) from most leading manufacturers, including ABB, Yaskawa, Mitsubishi, Siemens, Fuji, Hitachi, Toshiba, Delta, Danfoss, Schneider, Vacon and others.