Electronically commuted 3-phase motors (EC motors) are especially well suited for applications requiring quiet running characteristics and a long service life. The high-energy permanent magnets allow high acceleration rates, combined with very high efficiency and speeds of up to 14,000 rpm. The rotor position is fed back electronically by three Hall sensors offset by 120°. Together with an encoder, BLDC motors can also be used in applications requiring precise positioning.
Advantages
In internal rotor motors, the rotor rotates on a shaft in a stationary stator with coils. Their benefits lie in their lower rotor inertia and their better dissipation of heat losses.
External rotor BLDC motors offer a cost-effective solution particularly for large series. Thanks to the higher rotor inertia, external rotor motors have a lower torque ripple.
In slotless BLDC motors, the stator consists of ring-shaped plates with a flat winding on the inside. They offer high power density combined with compact size.
BLDC motors with protection class IP65 are equipped with a magnetic incremental encoder which is insensitive to rugged industrial environments and requires no Hall sensors.
For demanding applications with precise position, speed, and torque control, Nanotec also offers brushless DC motors with integrated controller.
