Future Advances
With the use of an induction-based levitation system present in maglev technologies such as the Inductrack system, magnetic bearings could be used instead of complex control systems by using Halbach Arrays and simple closed loop coils. These systems gain in simplicity, but are less advantageous with regard to eddy current losses. For rotating systems it is possible to use homopolar magnet designs instead of multipole Halbach structures, which reduces losses considerably. An example of this - that has bypassed the Earnshaw's theorem issues - is the homopolar electrodynamic bearings invented by Dr Torbjörn Lembke.
Read more about this topic: Magnetic Bearing
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