Brushless wound rotor synchronous machines (BL-WRSMs) represent an evolution in electrical machine design, combining the merits of wound rotor constructions with brushless operation to enhance ...

Renault has been granted a patent for a wound rotor design for electric machines. The rotor includes a shaft with a slipring, winding wire, and n wound poles wound in ascending order around the main ...

A synchronous and synchronous motors are the two main categories of ac motors. The induction motor is a common form of asynchronous motor and is basically an ac transformer with a rotating secondary.

German automotive part maker Mahle is developing an electric motor that does not require permanent magnets, and so does not need rare earth elements. Like a permanent magnet synchronous motor, ...