EC Motor: Performance Curve

 

Performance Curve (PC) of EC motors is basically same as for brushed DC motors.

ec motor

 

Rated operating point (rated torque) is defined for continuous duty cycle operation, usually.
Lower duty cycle operation allows higher torque load (overload).

Overload capability is limited by

  • winding temperature increase
  • max.current allowed to prevent de-magnetization effects for neodym permanent magnets
  • max.current available from driver electronics