Due to their concentrated windings, permanent-magnet fault-tolerant motors inherently have the advantages of
decoupling phases and fault-tolerant capability. Two fault-tolerant drive topologies for these motors, H-bridge and starconnection,
are presented and compared for open-circuit fault. In order to keep the torque performance invariant during the
post-fault operation, the current amplitude of healthy phases is increased in the H-bridge mode, while the current amplitude
and the phase angle of healthy phases are changed in the star-connection mode. Both strategies are derived, compared and
analyzed. Finally, the simulation results show the effectiveness of the theoretical analysis.