Development of Magnetic Bearings for High Temperature Suspension

The application of active magnetic bearings (AMBs) for gas turbines and aircraft engines would open large potentials for novel design. In order to utilize the full advantages of active magnetic bearings, operation in gas turbine and aircraft engines requires that the magnetic bearing should work properly at high temperatures up to 550°C. This paper deals with the active magnetic bearing design for high temperatures, including the investigation on material evaluation, manufacturing process and high temperature displacement sensor development. Two test rigs have been built up to demonstrate the feasibility of using active magnetic bearings at high temperatures.