Mixed excitation flux switching motor

Abstract

The invention relates to a mixed excitation flux switching motor which comprises a stator and a rotor, wherein multiple salient poles are uniformly distributed on the rotor; the stator comprises 12 H-shaped iron cores, 12 tangentially magnetizing permanent magnets, armature windings and exciting windings; the H-shaped iron cores and the permanent magnets are alternatively arranged; the magnetizing directions of two adjacent permanent magnets are opposite to each other; the exciting winding is wound on yoke retained magnetic bridges of the H-shaped iron cores; the exciting current directions applied by the exciting windings on two adjacent yoke retained magnetic bridges are opposite to each other; and each armature winding is arranged a stator pole consisting of two adjacent H-shaped iron cores and the sandwiched permanent magnet. According to the mixed excitation flux switching motor disclosed by the invention, the advantages of a flux switching permanent magnet motor are remained, extra copper consumption is not needed, the maximum gap flux density, torque and the like can be obtained, and the switching motor is good in adjustable flux performance and easy to process.

Description

technical field [0001] The invention relates to the field of motors, in particular to a hybrid excitation magnetic flux switching motor. Background technique [0002] The permanent magnet steel and armature winding of the flux switching permanent magnet motor are located on the stator, and there is neither winding nor permanent magnet on the rotor. It has simple structure, reliable operation, easy heat dissipation, and has high power density, high efficiency, and load It has the characteristics of strong ability and high sinusoidal back EMF, so it is considered to be a structure most likely to replace the rotor type permanent magnet motor. However, since only the permanent magnets are excited, its magnetic adjustment ability is limited. Therefore, some people have studied the electric excitation flux switching motor. Although the magnetic adjustment ability is improved, its efficiency and power density are low. Combining the advantages and disadvantages of both, the hybrid ...

AI Technical Summary

Problems solved by technology

However, this will inevitably reduce the air gap magnetic density, power density, torque and efficiency will be reduced

If it is necessary to increase the air gap flux density, etc., it is necessary to apply a magnetizing current to the field winding, which will increase additional copper loss

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