Method of producing salient electromagnetic and embedded radial magnetic field permanent magnet steel generator rotor

Abstract

The invention provides a production method of a salient pole electromagnetic and embedded radial magnetic field permanent magnet steel generator rotor, which belongs to the technical field of automobile motors and electrical appliances. The tile permanent magnet steel is installed in an arc-shaped groove in a T-shaped salient pole, The electric excitation winding is wound on the longitudinal part of the T-shaped salient pole, and the generated magnetic field directly faces the air gap with less magnetic flux leakage. The magnetic field in the air gap of the generator is jointly provided by the permanent magnet steel and the electric excitation winding. The magnetic field strength is large and the power High density, by adjusting the size and direction of the electric current of the electric excitation winding, the magnetic field synthesized by the permanent magnetic field and the electromagnetic field can be adjusted, the output voltage of the generator is stable, and the safety and reliability of the automotive electrical equipment are guaranteed.

Description

technical field [0001] The invention provides a production method for a permanent magnet steel generator rotor with salient pole electromagnetic and embedded radial magnetic field, which belongs to the technical field of automobile motors and electrical appliances. Background technique [0002] At present, the production method of the permanent magnet generator rotor used in automobiles is to assemble the shaft and a cylindrical permanent magnet, and then magnetize the cylindrical permanent magnet in a radial direction to form a permanent magnet with N poles and S poles arranged at intervals. For the rotor, during the magnetization process, the magnetic molecules cannot be completely arranged in an orderly manner, and the residual magnetic induction intensity is low, and because a part of the permanent magnet material between the magnetic poles of the cylindrical permanent magnet does not work, the permanent magnet material of the rotor with this structure uses The efficienc...

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Problems solved by technology

[0002] At present, the production method of the permanent magnet generator rotor used in automobiles is to assemble the shaft and a cylindrical permanent magnet, and then magnetize the cylindrical permanent magnet in a radial direction to form a permanent magnet with N poles and S poles arranged at intervals. For the rotor, during the magnetization process, the magnetic molecules cannot be completely arranged in an orderly manner, and the residual magnetic induction intensity is low, and because a part of the permanent magnet material between the magnetic poles of the cylindrical permanent magnet does not work, the permanent magnet material of the rotor with this structure uses The efficiency is low, and because the permanent magnetic field is a constant magnetic field, the magnetic field cannot be adjusted, the output voltage is low at low speed, the output voltage is high at high speed, and the output voltage is unstable, resulting in damage to the electrical equipment of the car or shortening the service life. To be further improved

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