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Stator surface mounted doubly salient permanent magnet motor with auxiliary salient pole

A surface mount, permanent magnet motor technology, applied in the shape/style/structure of winding conductors, magnetic circuit static parts, magnetic circuit rotating parts, etc., can solve the problems of magnetic leakage and reduce the utilization rate of unit magnetic steel , to achieve the effect of improving cooling conditions, widening the operating range of constant power speed regulation, and increasing direct-axis inductance

Active Publication Date: 2012-01-04
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure directly leads to a short circuit between the two magnets and the stator teeth, resulting in serious magnetic flux leakage, which reduces the utilization rate of the unit magnet

Method used

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  • Stator surface mounted doubly salient permanent magnet motor with auxiliary salient pole
  • Stator surface mounted doubly salient permanent magnet motor with auxiliary salient pole

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Embodiment Construction

[0017] The stator surface-mounted double-salient permanent magnet motor with auxiliary salient poles of the present invention includes two parts: a stator and a rotor, which can be in the form of an inner rotor or an outer rotor according to different applications, and both the stator and the rotor are double-convex. In the pole structure, the teeth of the stator protrude in the direction of the air gap, which is called the auxiliary salient pole. Number of stator slots N s and the number of rotor salient poles P r There are many kinds of coordination, and the number of motor phases m can be single-phase, two-phase, three-phase and multi-phase; there are concentrated windings and permanent magnets on the stator; among them, the concentrated winding of any phase is composed of (N s / m) coils, and the m-phase coils are successively sleeved on the stator teeth. Each stator slot is a double-layer winding, that is, there are coil sides belonging to two different phases; the coils...

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Abstract

The invention relates to a stator surface-mounted doubly salient permanent magnet motor with an auxiliary salient pole which has simple and firm structure, and constant power, wide speed-regulation operation range and higher power density; the motor comprises a stator (1) and a rotor (5), the rotor (5) is arranged at the inner part or outer part of the stator (1), the stator (1) and the rotor (5)are in a doubly salient structure, and a concentrated winding (3), a permanent magnet (2) and an auxiliary salient pole (4) are arranged on the stator (1), wherein, each concentrated winding coil of any one phase of the concentrated winding (3) is arranged in an iron core groove of the stator (1), and the coils of each a phase winding are connected serially or in parallel; the permanent magnet (2) is arranged on the salient pole of the stator (1), the outer surface of each stator tooth, facing to air gap, is mounted with two permanent magnets (2), and the polarity of two magnetic steels, below the same tooth, is the same, and the magnetism of the magnetic steel, below the adjacent stator tooth, is opposite.

Description

technical field [0001] The invention is a motor with simple and firm structure, constant power, wide speed regulation operation range and high power density, and relates to the technical field of motor manufacturing. Background technique [0002] As the country with the largest reserves of rare earth materials in the world, our country vigorously researches and promotes the application of various new permanent magnet motors represented by rare earth permanent magnet motors, which has important theoretical significance and application value. Regardless of power generation or electric operation, new permanent magnet motors with high efficiency, high torque (power) density and low loss are showing a trend of accelerated development. Over the past decade or so, research hotspots have been focused on rotor permanent magnet motors represented by surface-mounted, plug-in and built-in types. However, the type of motor with permanent magnets placed on the rotor will cause a series o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/17H02K1/14H02K1/24H02K3/18
Inventor 花为程明张淦
Owner SOUTHEAST UNIV
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