Both of these brushless DC motor technologies feature high efficiency, high speed, and hall sensors/sensorless options. Slotless brushless DC motors have a self-supporting cylindrical coil, creating no detent torque thus the rotor does not have preferred equilibrium positions. This resistant torque is called cogging or detent torque. Due to these slots, the rotor has preferred equilibrium positions when the motor is unenergized. Slotted brushless DC motors have coils inserted in the slots of the stator. Both of these brushless DC motors have permanent magnet rotors with 2 or 4 pole pairs. Portescap offers mainly two types of brushless DC motorВ technologies: slotted and slotless. BRUSHLESS DC MOTOR TECHNOLOGY: SLOTTED & SLOTLESS This unique coil design allows two-pole motors, for example, to deliver 30 % more brushless motor torque compared to the same size motor using a conventional coil design, while substantially lowering iron losses.

The key to the outstanding performance of these mini brushless motors is this new coil, designed by Portescap in Switzerland. The proprietary U coil provides outstanding performance, including minimal iron losses, increased efficiency and cooler operation. PortescapвЂ™s Ultra ECв„ў platform offers 3 families of brushless slotless motors to help you address a wide range of requirements for brushless motor torque and speed. Understanding the complete motor design allows Portescap engineers to pack the most power possible into the smallest motor package. Striking the right balance is important while creating a motor with maximum brushless motor torque that does not draw a tremendous amount of power. Copper content of the winding contributes to the power provided by the motor while flux path guides all of the magnetic field in the usable channel, minimizing losses. The higher the number of pole pairs in the magnet, the higher the amount of brushless motor torque for the same dissipated power. The key components involved in producing torque are the magnet, the winding and the flux path. Motor torque is the amount of rotational force that a motor generates during operation. BLDC MOTOR DESIGNДuring the brushless DC motor design phase, Portescap engineers aim to optimize the brushless motor torque. The reduced moving parts give brushless motors a long life, limited only by wear on ball bearings. Brushed motors, the more conventional design, use a mechanical commutation where a rotating armatures with brushes are used to make the electrical connections. WHAT IS THE DIFFERENCE BETWEEN A BRUSHLESS AND BRUSHED MOTORS?Д«rushless motors have no mechanical commutation. The commutation of the brushless DC motor is made electronically and can be done either by looking at the back-EMF of the motor or by using a position sensor. In comparison, the brushless DC motor is a reversed design: the permanent magnet is rotating whereas the windings are part of the stator and can be energized without requiring a commutator-and-brush system. HOW DOES A BRUSHLESS DC MOTOR WORK?Д¬onventional DC motors use a stationary magnet with a rotating armature combining the commutation segments and brushes to provide automatic commutation.

How does a brushless motor work, and what is the difference between brushless and brushed motors? What advantages can be achieved via BLDC motor design, what are the advantages of brushless motors in general, and Portescap brushless motors in particular? Learn more about how your business can benefit from Portescap BLDC motors. When finding the right motor for your application you may have many questions. Portescap continues to engineer performance improvements in its slotted and slotted brushless DC motors. Brushless DC (BLDC) motors deliver high efficiency, torque and speed, and are available in dimensions to suit a wide variety of applications.

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