The rotor meanwhile is a 3D-printed cube with press-fit neodymium magnets. Check out the build in the video below. Connected to an ESC, the motor works decently, but not spectacularly.

A brushless dc motor gets over the demand for a mechanical commutator by reversing the motor set-up i.e. the coils/windings become the stator and the permanent magnets become part of the rotor. Motor ...

By controlling the electromagnets, the rotor spins. With no brushes, these motors are often more efficient, ... That’s more commonly known as a stepper motor, since no of Magnets = number of coils.

For its part, French automotive supplier Valeo has focused on magnet-free electric motor stators and control systems, working with Renault on its next-gen E7A motor design, planned for a 2027 launch.

Ranging from 32 to 37 kilograms, the motors are also lightweight and produce up to 30-per-cent more torque than the leading single-rotor design, owing to the large size of the outer rotor.

The AH5792 smart motor controller from Diodes Inc. can be used to drive low-power, single-coil, brushless dc (BLDC) fans and motors. This single-chip solution integrates a Hall ...