Systems and methods for magnetizing permanent magnet rotors

A magnetization fixture for remagnetizing a permanent magnet rotor of an electric motor, where the fixture comprises

• a plurality of separable sections, each of which includes a core section and a coil of magnet wire that is wound on the core section, wherein the separable sections are secured to each other to form a body of the magnetization fixture which accommodates at least a portion of a rotor therein, wherein each of the separable sections is independently removable from others of the separable sections in the body of the magnetization fixture, and wherein the coils of magnet wire wound on the core sections are connected in series so that each separable section forms a pole of a multi-pole electromagnet;
• and
• a remagnetizing circuit coupled to the series-connected coils of magnet wire, wherein the remagnetizing circuit is operable to apply a remagnetizing voltage to the coils of magnet wire, causing each separable subsection of the magnetization fixture to produce a magnetic impulse that induces magnetization of a corresponding permanent magnet in the rotor which is aligned with the separable section when the rotor is positioned in the fixture.