BRUSHLESS DIRECT CURRENT MOTOR Russian patent published in 2014 - IPC H02K31/00 H02K31/02 

FIELD: electricity.

SUBSTANCE: brushless direct current motor comprises a rotating magnetised rotor without windings and a fixed toroid stator with inducing winding and two actuating coils, two opposed magnetically conductive washers placed at the stator with a small gap from the magnetically conductive washers of the rotor body. The stator inducing winding is placed with minimum acceptable gap from the rotor magnet pole and is remote significantly from the stator magnet pole using dielectric spacer at which the inducing winding is wound. The stator inducing winding is made as toroid with round cross-section and related to the magnetically conductive axis rigidly fixed at the motor housing through a magnetically inductive disk with two actuating coils placed at its both sides. Outputs of the in series actuating coils are coupled to the direct current source. At the toroid magnet pole of the stator there is a hollow toroid of non-magnet (dielectric) material with wound inducing winding; thickness of its walls is five-ten times more than the air gap between the stator inducing winding and toroid-cylindrical body of the rotor, which is shaped as a hollow toroid of magnetically conductive material, it consists of two halves coupled to the magnetically-conductive washers.

EFFECT: increasing efficiency factor and specific output of the engine per its volume or weight unit.

4 dwg