A comparative study of permanent magnet - synchronous and permanent magnet - flux switching machines for fault tolerant drive systems

Flux switching machines are quickly gaining popularity due their inherent advantages stemming from having both the current conductors and permanent magnets mounted on the stationary side of the electrical machine. Their power density has already been shown to be comparable to that of permanent magnet synchronous machines, however their fault tolerant capabilities are somewhat limited in their standard form. This paper looks at a novel design of a fault tolerant flux switching permanent magnet machine able to operate with both open circuit and short circuit winding faults and compares its healthy and faulty performance to a fault tolerant permanent magnet synchronous machine.