Flux Modulation Hybrid Motor with Parallel Hybrid Excitation Structure

Abstract

The invention provides a magnetic flux modulated composite motor in a parallel hybrid excitation structure, and relates to the field of magnetic flux modulated composite motors. Through combining a permanent magnetic motor with a conventional electro-magnetic motor, motor low-speed high-torque output is realized while a conventional motor realizes volume reduction and power factor increasement, and an objective that an air-gap field can be flexibly adjusted is realized. An outer stator is fixed on a motor housing, an armature winding is winded on the outer stator. A permanent magnetic inner stator and an electro-magnetic inner stator are respectively fixed on the left side and the right side of a motor rotating shaft, and are separated by an air gap. A permanent magnet is fixed on a permanent magnetic inner stator iron core. A field winding is winded on an electro-magnetic inner stator iron core. A field regulating ring rotor is between the inner stator and the outer stator, and is fixedly arranged on the motor rotating shaft through a key groove. The field regulating ring rotor is separated from the inner stator and the outer stator through air gaps. The magnetic flux modulated composite motor combines characteristics of a parallel hybrid excitation motor and a novel magnetic gear, and can modulate air gap flux, so as to obtain low-speed high-torque performance.

Description

technical field [0001] The invention relates to the field of magnetic flux modulation composite motors. Background technique [0002] In recent years, due to the development of rare earth permanent magnet materials with high remanence density, high coercive force, and high magnetic energy product, compared with traditional electric excitation motors, permanent magnet motors have small volume and simple structure. It has the advantages of convenient maintenance, high efficiency, high power factor, and high power density in terms of performance. However, because the permanent magnet motor uses a single permanent magnet for excitation, it is difficult to adjust the magnetic field. The traditional electric excitation motor can easily adjust the air gap magnetic field by adjusting the DC or AC excitation current, but its structure is complex, the output torque is small, and the power factor is low. [0003] The main feature of the hybrid excitation motor is that the magnetic fie...

AI Technical Summary

Problems solved by technology

Hybrid excitation motor overcomes the shortcomings of permanent magnet motor magnetic field adjustment and low power factor of electric excitation motor at the same time, so that the motor has the advantages of small size, compact structure, high power factor, convenient magnetic field adjustment, etc., but still has the problem of small output torque

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