A motor comprising a rotor, wherein: • the rotor comprises at least two discs made of a diamagnetic material and mounted on a drive shaft, • the motor further comprises permanent magnets embedded in sockets in each of the at least two discs, wherein the poles of same polarity N or S of the permanent magnets are located on the outer circumference of the rotor, so that the successive poles of the permanent magnets of the rotor have the same polarity, • and wherein the permanent magnets in each of the at least two discs are arranged successively and shifted by a certain angle in the circumferential direction from the permanent magnets in the other disc or discs, • the motor further comprising a movable stator, • the movable stator comprises a stationary frame and two crescents that are half-ring shaped and radially surround the rotor and are mounted to the stationary frame by means of a pendulous connection, • the crescents are controlled by means of linear actuators attached to the frame, the linear actuators being supplied with electric current, so that the crescents of the stator are positioned closer to or further away from the rotor by means of the linear actuators, • wherein the frame of the motor has a spacer beam for positioning the crescents of the stator and preventing them from coming too close to the rotor, • the movable stator further comprises permanent magnets embedded in sockets made of a diamagnetic material inside the crescents, in such manner that pairs of permanent magnets of alternating polarisation are arranged in the inner circumference of the stator, the distance between each permanent magnet in the pair of permanent magnets being placed at a distance in the circumferential direction, preferably 17 mm, that is significatively smaller than the distance, preferably 165 mm, between a pair of permanent magnets and a circumferentially adjacent pair of permanent magnets, • wherein the sockets located in the rotor and the stator respectively comprise ferromagnetic cores, • wherein the successive permanent magnets of the stator are partially covered with a strip of a ferromagnetic material on the side of the rotor. • the rotor comprises at least two discs made of a diamagnetic material and mounted on a drive shaft, • the motor further comprises permanent magnets embedded in sockets in each of the at least two discs, wherein the poles of same polarity N or S of the permanent magnets are located on the outer circumference of the rotor, so that the successive poles of the permanent magnets of the rotor have the same polarity, • and wherein the permanent magnets in each of the at least two discs are arranged successively and shifted by a certain angle in the circumferential direction from the permanent magnets in the other disc or discs, • the motor further comprising a movable stator, • the movable stator comprises a stationary frame and two crescents that are half-ring shaped and radially surround the rotor and are mounted to the stationary frame by means of a pendulous connection, • the crescents are controlled by means of linear actuators attached to the frame, the linear actuators being supplied with electric current, so that the crescents of the stator are positioned closer to or further away from the rotor by means of the linear actuators, • wherein the frame of the motor has a spacer beam for positioning the crescents of the stator and preventing them from coming too close to the rotor, • the movable stator further comprises permanent magnets embedded in sockets made of a diamagnetic material inside the crescents, in such manner that pairs of permanent magnets of alternating polarisation are arranged in the inner circumference of the stator, the distance between each permanent magnet in the pair of permanent magnets being placed at a distance in the circumferential direction, preferably 17 mm, that is significatively smaller than the distance, preferably 165 mm, between a pair of permanent magnets and a circumferentially adjacent pair of permanent magnets, • wherein the sockets located in the rotor and the stator respectively comprise ferromagnetic cores, • wherein the successive permanent magnets of the stator are partially covered with a strip of a ferromagnetic material on the side of the rotor.