But are they? It’s true that they are both permanent magnet-based motors with the same basic structure, consisting of permanent magnets on the rotor and windings on the stator. The drive currents in ...

Being a central part of the motor core, rotor design is critical to motor performance and efficiency. Because electric motors can spin at up to 20,000 rpm and even more, the permanent magnets have ...

As the name implies, the rotors in permanent-magnet motors possess their own magnetism. No power is needed to create the rotor's magnetic field, making them far more efficient at low speed.

For many years, one type of EV motor called a permanent magnet motor (PMM) has incorporated a carbon fiber-reinforced thermoset sleeve that wraps around the PMM’s rotor. The sleeve keeps the rotor ...

Brushless motors are no different than ac or dc motors in that they rely on the interaction of magnetic fields to generate torque. Playing catch-up A brushless motor is like an “inside out” dc ...

The rotor assembly has the permanent magnets surrounded by three equally spaced windings, which are fixed to the stator assembly. Torque is then produced by the attraction or repulsion between the ...

Brushless motors flip this inside out. The rotating part (the rotor) has a permanent magnet. The stationary part (the stator) has multiple electromagnets. By controlling the electromagnets ...

Shakti Pumps (India), a leading manufacturer of energy-efficient pumps and motors has announced that it has received patent for inventing a ‘Stack Assembly for Permanent Magnet Rotor.’ ...