Delivery of first permanent magnet tunnel thruster
The new thruster design concept comprises a permanent magnet motor in a rim, which drives the propeller in the centre. The permanent magnet motor consists of a stator that carries a number of electrical coil windings, and a rotor fitted with a number of very strong permanent magnets. A rotating magnetic field is created by the stator that interacts with the fields of the permanent magnets on the rotor, generating force to drive the rotor around, providing the mechanical power.