Abstract:

Some different fault-tolerant methods of the permanent magnet machine and the corresponding control system in the electro-mechanical actuator (EMA) are analyzed in detail, and compared to point out the advantages and disadvantages of them. At the same time, the finite element model of six-phase ten-pole fault-tolerant permanent magnet machine is established to simulate and compute static and transient electromagnetic fields using vector magnetic potential method. Results indicate that the phase under short and open circuit does not effect other normal phases; consequently, this machine has a perfect property in the magnetic flux and fault insulation.

Key words: electro-mechanical , actuator,  , finite , element , analysis,  , faulttolerant , permanent , magnet , machine,  , magnetic , insulation,  , fault , insulation