Drum-type distributed winding axial hybrid excitation motor

Abstract

The invention discloses a drum-type distributed winding axial hybrid excitation motor. The motor comprises a stator disc and two rotor discs. The stator disc comprises a stator core, an armature winding, excitation windings and magnetic conductive rings. The rotor discs comprise rotor back yokes, magnetic conductive pole blocks and permanent magnets. Two axial end faces of the stator core are provided with a plurality of slots, and the number of the slots and slots positions on the two faces are at the same time. Two sides of a drum-type distributed armature winding coil are embedded and woundin two end face slots of the stator core, and a span is obtained by matching the number of pole slots. The excitation windings are installed on an inner ring or an outer ring of the armature windingor are installed on the inner ring and the outer ring simultaneously, and the magnetic conductive rings are correspondingly installed on inner rings or outer rings of the excitation windings. The rotor discs are arranged on two sides of the stator disc, and the number of rotor poles is matched with that of the stator slots. The permanent magnets and the magnetic conductive pole blocks are alternately installed on the rotor discs, and the two rotor discs are installed on a rotating shaft in a staggered mode by one pole. The drum-type distributed winding axial hybrid excitation motor has the advantages of high power density, wide magnetic field adjusting range and wide application prospect.

Description

technical field [0001] The invention relates to the technology of an axial flux permanent magnet motor, in particular to a drum type distributed winding axial hybrid excitation motor. Background technique [0002] Hybrid excitation synchronous machine (HESM) is a new motor structure first proposed by Russian scholars in the 1980s. It has two magnetic potential sources and combines the electric excitation and permanent magnet synchronous motor. It has the advantages of easy adjustment of the air gap magnetic field, high operating efficiency and high torque density, and has important research value. [0003] Hybrid excitation motors have been developed in various structural forms. According to the magnetic circuit relationship between excitation sources, hybrid excitation synchronous motors are divided into series magnetic circuit type, parallel magnetic circuit type and parallel magnetic circuit type. The magnetic potential source of the series magnetic circuit type hybrid e...

AI Technical Summary

Problems solved by technology

However, the basic principle of this type of motor brings great challenges to the improvement of the power density and structural strength of the motor body. It uses unipolar switching of the magnetic flux, and the utilization rate of the iron core is low, so it is difficult to achieve the torque density of the synchronous excitation motor. Level

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