KamAZ has patented an electric machine with a combined axial-radial magnetic flux. The development relates to synchronous motors with permanent magnets and is intended for cases where compactness and low weight are important.
In conventional electric motors, the magnetic flux goes either radially (from the center to the edges) or axially (along the axis of the shaft). KamAZ engineers combined both directions. Inside the housing, there is a rotor with axial and radial magnets, two axial stators, and one radial stator. All magnets work simultaneously, creating a more intense magnetic field with the same dimensions.
The device consists of a housing with bearing shields, inside which a shaft rotates on bearings. A rotor is fixed on the shaft. It has axial magnets laid in the grooves of a core made of non-magnetic material, as well as a laminated radial core with internal radial magnets.
The technical result achieved by the developers is that the motor is lighter and more compact at the same power, or more powerful at the same size, compared to traditional analogues. Such a solution can be used in electric vehicles, hybrid power plants, and other equipment where every kilogram and centimeter counts. The patent has already been obtained.
