Hybrid excitation synchronous motor with wide speed regulation range

Abstract

The invention relates to a hybrid excitation synchronous motor with a wide speed regulation range. A rotor yoke part is fixed on a rotating shaft of the structure, a rotor magnetic pole is fixedly arranged on the rotor yoke part, the rotor magnetic pole is composed of permanent magnet poles and ferromagnetic poles which are arranged in a staggered mode, a stator tooth part is fixedly arranged on the periphery of the rotor magnetic pole, an electric exciting winding is placed in a stator groove of the stator tooth part, a stator armature winding is wound on the stator tooth part, the stator tooth part is clamped to a stator yoke part, and the rotating shaft, the rotor yoke part, the permanent magnet poles and the ferromagnetic poles form a rotor. The stator tooth part, the electric excitation winding, the armature winding and the stator yoke part form a stator. An air gap is formed between the stator and the rotor. According to the invention, the problems that the existing hybrid excitation motor is poor in magnetic regulation capability due to the restriction and limitation relationship between the magnetic regulation range and the torque density and is relatively low in motor efficiency, power density and the like due to relatively large electric excitation loss of the motor are solved.

Description

technical field [0001] The invention belongs to the field of motor design, in particular to a hybrid excitation synchronous motor with wide speed regulation range. Background technique [0002] The hybrid excitation synchronous motor has permanent magnets and electric excitation magnetomotive force sources at the same time. The permanent magnets provide a constant excitation field, and the electric excitation field can generate magnetization and demagnetization fields as required. It not only has the advantages of high power density and high efficiency of permanent magnet synchronous motors, but also effectively solves the shortcomings of traditional permanent magnet motors that the excitation field cannot be adjusted. It has broad application prospects in electric vehicles, wind power and other fields. [0003] In order to realize the brushless of the hybrid excitation motor and improve the reliability of the motor, the excitation winding of many hybrid excitation motors is...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a hybrid excitation synchronous motor with a wide speed regulation range. The purpose of the hybrid excitation motor is to solve the restrictive relationship between the field regulation range and torque density of the existing hybrid excitation motor. Problems such as low motor efficiency and low power density

Images