Rotor of a dynamoelectric rotary machine
A reluctance rotor of a dynamoelectric rotary machine has an even number of poles constructed of a material having structural magnetic anisotropy. The magnetic anisotropy of the material is characterized by a first magnetic resistance, a magnetic permeability of μr>20 and a saturation polarization of >1T in a first spatial direction, and by a second magnetic resistance which is greater than the first magnetic resistance with a magnetic permeability of μr<1.6 in spatial directions perpendicular to the first spatial direction.
1. A reluctance rotor of a dynamoelectric rotary machine having an even number of poles constructed of a material having structural magnetic anisotropy, wherein the magnetic anisotropy of the material comprising a first magnetic resistance in a first spatial direction and a second magnetic resistance in spatial directions perpendicular to the first spatial direction, wherein the second magnetic resistance is greater than the first magnetic resistance, the material having a magnetic permeability of μr>20 and a saturation polarization of >1T in the first spatial direction, and a magnetic permeability of μr<1.6 in the spatial directions perpendicular to the first spatial direction.
2. The reluctance rotor of claim 1 , wherein the material of the poles is a ferromagnetic material having a coercive field strength H<10 kA/m.
3. The reluctance rotor of claim 2 , wherein the material of the poles is based on a mixture on neodymium, iron and boron.
4. A permanently excited rotor comprising substantially radially disposed ferrite magnets which are separated from one another by a material exhibiting structural magnetic anisotropy, wherein the magnetic anisotropy of the material comprising a first magnetic resistance in a first spatial direction and a second magnetic resistance in spatial directions perpendicular to the first spatial direction, wherein the second magnetic resistance is greater than the first magnetic resistance, the material having a magnetic permeability of μr>20 and a saturation polarization of >1T in the first spatial direction, and a magnetic permeability of μr<1.6 in the spatial directions perpendicular to the first spatial direction.
5. A dynamoelectric rotary machine comprising:
a permanently excited rotor comprising substantially radially disposed ferrite magnets which are separated from one another by a material exhibiting structural magnetic anisotropy, wherein the magnetic anisotropy of the material comprising a first magnetic resistance in a first spatial direction and a second magnetic resistance in spatial directions perpendicular to the first spatial direction, wherein the second magnetic resistance is greater than the first magnetic resistance, the material having a magnetic permeability of μr>20 and a saturation polarization of >1T in the first spatial direction, and a magnetic permeability of μr<1.6 in the spatial directions perpendicular to the first spatial direction, and
a stator having a system of windings generating a magnetic field which, during operation of the dynamoelectric rotary machine, interacts electromagnetically with the rotor.
6. A drive for machine tools and in automotive engineering, the drive comprising:
a permanently excited rotor comprising substantially radially disposed ferrite magnets which are separated from one another by a material exhibiting structural magnetic anisotropy, wherein the magnetic anisotropy of the material comprising a first magnetic resistance in a first spatial direction and a second magnetic resistance in spatial directions perpendicular to the first spatial direction, wherein the second magnetic resistance is greater than the first magnetic resistance, the material having a magnetic permeability of μr>20 and a saturation polarization of >1T in the first spatial direction, and a magnetic permeability of μr<1.6 in the spatial directions perpendicular to the first spatial direction, and
a stator having a system of windings generating a magnetic field which, during operation of the dynamoelectric rotary machine, interacts electromagnetically with the rotor.