Patent ID: 6380654
Filing Date: 2002-04-30
Classification: H02K,Y10T

Abstract:
A process for magnetizing the permanent magnets of an electric motor rotor, having rotor magnetic sectors, each with a single and respective magnetic orientation and comprising at least one magnet (20), the stator (30) of said motor carrying a plurality of coils (40), characterized in that the process comprises the steps of:a- assembling the electric motor, by operationally positioning the stator (30) in relation to the rotor; b- positioning the rotor in a predetermined angular position in relation to the coils (40) of the stator (30); c- promoting the controlled energization, from an external current source, of at least one coil (40) of the stator (30), in order to promote a predetermined level of magnetization of a part of an angular section of at least one magnetic sector of the rotor in said predetermined angular position, said controlled energization being obtained from a provision of at least one current pulse generating respective magnetic fields inducing said magnetization; and d- repositioning the rotor in another predetermined angular position in relation to the coils (40) of the stator (30) for achieving, with the energization of at least one coil (40), the predetermined level of magnetization of at least one angular section which was not adequately magnetized in the step â€œcâ€  of at least one magnetic sector.