A Double Interleaved Hybrid Excitation Motor

Abstract

The invention discloses a double interlaced hybrid excitation motor, which comprises a front end cover, a rear end cover and a casing, a rotor yoke is arranged on the rotating shaft, a permanent magnet N pole, a permanent magnet S pole and an iron pole are fixed on the rotor yoke, and the casing The armature core and the excitation core are evenly arranged on the armature core, the AC armature winding is arranged on the armature iron core, and the AC excitation winding is arranged on the excitation core; the rotating shaft, the rotor yoke, the permanent magnet N pole, the permanent magnet S pole and the iron The pole constitutes the rotor; the AC armature winding, armature core, AC field winding, field core and casing constitute the stator. The invention uses alternating current to adjust the air gap magnetic flux, and the excitation magnetomotive force and the armature magnetomotive force are in parallel relationship. Hazard of steel demagnetization. The invention can provide a constant voltage power supply in variable speed power generation applications, and can realize a wider speed regulation range than ordinary hybrid excitation motors in variable speed electric applications.

Description

technical field [0001] The invention relates to the technical field of hybrid excitation motors, in particular to a double interleaved hybrid excitation motor. Background technique [0002] The magnetic energy product of rare earth permanent magnet materials such as NdFeB is high, which makes it difficult to adjust the air gap magnetic field in the permanent magnet motor. The general permanent magnet motor adopts vector control technology to adjust the magnetic flux by adjusting the stator direct axis current. However, the direct-axis demagnetization current may cause irreversible demagnetization of the permanent magnet, reducing the reliability of the motor. Reasonably changing the structure of the permanent magnet motor, introducing auxiliary electric excitation windings, and realizing the hybrid excitation motor with flexible adjustment of the air-gap magnetic field have become an effective way to solve this problem. [0003] There are many classification methods for hy...

AI Technical Summary

Problems solved by technology

On the magnetic circuit, the magnetomotive force of the electric excitation and the magnetomotive force of the armature are connected in series. The relationship between the magnetomotive force of the electric excitation winding and the armature winding is similar to the primary and secondary windings of the transformer. When the field is weakened, a part of the magnetomotive force of the armature will be offset. , did not give full play to the effectiveness of the armature magnetomotive force

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