COMMUTATOR-FREE DC MOTOR Russian patent published in 2010 - IPC H02K31/00 

FIELD: engines and pumps.

SUBSTANCE: motor includes rotor and stator made in the form of cylindrical magnetic conductor inside which there are two sections, each consisting of several annular magnetic conductors; in the first section there fixed is the first fin-and-cylindrical electrical conductor, and in the second section - the second fin-and-cylindrical electrical conductor, which are made from copper foil. Internal ends of the first and the second fin-and-cylindrical magnetic conductors are electrically connected to internal copper annular electrodes. And their external ends - to external copper annular electrodes. Rotor is made in the form of fin-and-cylindrical electromagnet, the annular fins of which enter the slots of the first and the second electrical conductors. In the middle rotor part there arranged is polarising coil one end of which is connected to electrode of the first electrical conductor, and the other one - to external electrode of the second electrical conductor. Besides instead of electromagnet, constant magnet with high value of coercitive force can be used in rotor.

EFFECT: simplifying the design and improving operating reliability and service life of motor.

1 dwg