This series of motors operate at synchronous
electric speed, there is no slip between stator and
rotor, and there is no rotor copper consumption and
iron consumption during stable operation, which can
reduce the fan and the corresponding wind friction
consumption. Rare earth permanent magnet motor does
not need reactive excitation current, so it can
significantly improve the power factor to the limit
value (1.0); It can meet the requirements of various
load conditions, has obvious energy-saving effect,
reliable and safe operation, low replacement cost
and short investment payback period. It has been
recommended by the national "energy saving project
of motor system".