Unipolar transverse magnetic flux machine
AssigneeRobert Bosch GmbH
InventorGuenter Kastinger
Life of this patent
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Abstract
In a unipolar transverse flux machine, to attain a modular structure favorable in terms of production, the stator and the rotor each have the same number of identical stator modules and rotor modules. Each stator module includes an annular coil, disposed coaxially to the rotor shaft, and U-shaped stator yokes fitting over the annular coil. To achieve a high static torque, each rotor module comprises two rotor rings with external toothing, and the rotor rings surround two radially oppositely magnetized permanent magnet rings, which in turn are seated on a common flux-conducting element, which is formed for instance by the rotor shaft produced from ferromagnetic material.
Claims21
A unipolar transverse flux machine, comprising
- a rotor (12) which is rotatable about a rotor axis and having at least one rotor module (15), each rotor module including two coaxial, toothed, ferromagnetic rotor rings (16, 17) and a permanent-magnetic member (18) for generating a magnetic flux extending radially in opposite directions into the rotor rings (16, 17),
- a stator (11) which is concentric with the rotor axis and having at least one stator module (14) associated with the rotor module (15), the stator module (14) including an annular coil (23), disposed coaxially to the rotor axis, and U-shaped stator yokes (24) fitting over the annular coil, a toothing of the rotor rings (16, 17) provided solely on the outer circumference, facing away from the rotor axis, of the rotor rings (16, 17), the stator yokes (24) of the stator module (14) including yoke legs disposed such that their yoke legs (241) each face one of the rotor rings (16) with radial gap spacing, and
- the permanent-magnetic member (18) being formed by two permanent magnet rings (26, 27) magnetized radially in opposite directions, the permanent-magnetic members (18) each being surrounded in a manner fixed against relative rotation by one rotor ring (16, 17) and being seated on a common flux-conducting element (29).
Dependencies are inferred from the claim text.