Electrical machine
AssigneeSiemens Aktiengesellschaft
InventorRolf Vollmer
Life of this patent
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Abstract
The invention relates to an electrical machine (1, 110), which is in particular a synchronous machine, which has a primary part (3, 130) and a secondary part (5, 120), wherein the primary part (3, 130) has a) a first means (9) for producing a first magnetic field and b) a further means (17, 27, 29) for producing a further magnetic field, which in particular is an exciter field, and wherein the first means (9) has at least one winding, and the further means (17, 27, 29) is arranged in the region of an active air gap (21) of the electrical machine between the primary part and the secondary part and has magnetic poles, each having at least one permanent magnet (17).
Claims11
An electric machine, comprising a primary part and a secondary part, wherein the primary part includes
- a laminate stack having teeth forming magnetic poles, with a pole pitch gap with air or an amagnetic material disposed between at least some adjacent magnetic poles for reducing axial magnetic leakage,
- at least one phase winding for producing a first magnetic field, said at least one phase winding encompassing at least one pole pitch gap, and
- a single permanent magnet arranged on each end face of a tooth of the laminate stack in one-to-one correspondence and facing an effective air gap between the primary part and the secondary part, wherein each permanent magnet has a single magnetization direction perpendicular to the end face.
A transport device, comprising an electric machine with a primary part and a secondary part, wherein the primary part includes
- a laminate stack having teeth forming magnetic poles, with a pole pitch gap filled with air or an amagnetic material disposed between at least some adjacent magnetic poles for reducing axial magnetic leakage,
- at least one phase winding for producing a first magnetic field, said at least one phase winding encompassing at least one pole pitch gap, and
- a single permanent magnet arranged on each end face of a tooth of the laminate stack in one-to-one correspondence and facing an effective air gap between the primary part and the secondary part, wherein each permanent magnet has a single magnetization direction perpendicular to the end face.
Dependencies are inferred from the claim text.