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Stator Core
Stator Teeth
Stator Winding
Electromagnetic Shield
Rotor Pole
Rotor Core
HTS Field Winding
HTS Winding
Copper Winding
Magnetic Iron
Copper or Aluminium Shield
Figure 8: HTS Synchronous Machine Type 1.
Stator Core
Stator Teeth
Stator Winding
Electromagnetic Shield
Rotor Core
HTS Field Winding
HTS Winding
Copper Winding
Magnetic Iron
Copper or Aluminium Shield
Figure 9 : HTS Synchronous Machine Type 2.
very brittle at low temperature the choice of material is limited. Nickel-based
alloys have satisfactory properties but are expensive.
Airgap stator winding and HTS rotor with non-magnetic pole bodies (Fig. 11).
4.
This construction also allows signifi cant reduction in size and mass. It requires
more HTS wire than type 4, but does not require expensive cold iron compo-
nents since it is relatively easy for the rotor core to be warm and thermally
isolated from the cold HTS fi eld system.
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