The hybrid excitation rotor has higher process requirements in the production process. This paper discussed hybrid excitation rotor from 3 perspectives, i.e. how to correctly install the magnetic steel polarity in the manufacturing process, the identification of the magnetic polarity of the excitation coil and slip ring in the process inspection and the effect of different magnetic steel materials on the performance improvement. Through the combination of magnetic steel and claw pole arrays, a dedicated inspection equipment was designed to verify the excitation coil during the inspection process, different materials of magnetic steel were used for performance testing of the generator. The results show that combining the positive and negative poles of the excitation coil with the magnetic steel to form a Haier Beck array can effectively improve the output power of the generator, aluminum iron boron material has a better effect on improving electrical performance compared to ferrite.

Automobile alternator  /  Output characteristic  /  Rotor assembly  /  Claw pole  /  Hybrid excitation