For the new Ultra EC series, Portescap offers 3 different types of brushless DC motors, identified by B for the slotted series (high torque, high speed, autoclavable option), BH for the slotless series (high speed, high efficiency), and EC (for Electronically Commutated).
This product line is offered with various options: S (high-speed optimization), T (high-torque optimization,) and H (medium torque and speed), directly linked to the needs of your applications.
Typically the best place to start when sizing a brushless DC motor is matching motor size (diameter, length). Diameter ranges from 13 mm to 30 mm. Brushless DC slotted motor diameter and length are specified in inches. Brushless DC slotless motor diameter is specified in milimeters, and length as a coding Ultra EC Series motor diameter and length are specified in milimeters.
Various winding options are proposed to best match with the application requirements – voltage, resistance and torque constant are the basic parameters for selection.
Generally with three winding phases, brushless DC motors are electronically commutated. A simple way to drive these motors is to power two phases at a time, using hall sensors to know the rotor position, with a simple logic to allow optimal energizing of the phases as a function of rotor position. Another way is to use sensorless electronics, working with the zero-crossing criteria to determine rotor position and commutation cycle. This electronics format is well suited for constant speed applications as they are highly insensitive to hostile environments. Stay tuned for the NanYang Motor where we will discuss customizing a motor. For more information about AC Direction Motor products, check out our website at https://www.zjnanyangmotor.com/product/ac-direction-motor/