PROCESS FOR CARRYING OUT AN INDUCTOR FOR A SELF-STARTING PERMANENT MAGNET SYNCHRONOUS MOTOR

The invention relates to a process for carrying out an inductor for a self-starting permanent magnet synchronous motor which is intended to fit out permanent magnet synchronous motors. According to the invention, the process consists in that it uses a rotor sheet, known per se, employed in manufacturing asynchronous motors of general use, wherein some rectangular recesses () are additionally cut out in front of a rotor tooth and are distributed so as to achieve a geometrical symmetry, where a metal bridge () resulting after performing the cut out towards the internal centering hole cannot exceed 1 mm. In order to make possible the pressure casting of the self-starting rotor cage, in each of the recesses () of the sheets there are introduced two prisms () provided with threaded holes () wherethrough there are introduced some rods () having the same length as the rotor stack to be made, then the prisms () are removed by means of a screw extractor, the interior is machined by turning, so as to remove the metal bridges (); some permanent magnets () are introduced into the rectangular recesses (), while taking into account the magnetic field orientation, so that the desired number of poles is obtained on the inductor periphery, the mounting position of the said magnets () being radially and axially secured by some non-magnetic bushings (), the entire assembly obtained thereby being finally pressed onto an axle made of non-magnetic material.