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Stator surface mounted doubly salient pole permanent magnet motor

A stator surface, permanent magnet motor technology, applied to synchronous motors with rotating armatures and static magnets, synchronous machine parts, magnetic circuit static parts, etc., can solve short circuits, serious magnetic leakage, and reduce unit magnetism Utilization and other issues, to achieve the effect of high efficiency, reduced copper consumption, and compact structure

Inactive Publication Date: 2010-03-03
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Among them, the structural principle of the flux reversal motor is to install two permanent magnets with opposite polarities side by side on each salient pole stator tooth. The purpose is to obtain a bipolar permanent magnet flux linkage, but this structure directly leads to two The magnetic steel and the stator teeth form a short circuit, and the magnetic flux leakage is serious, which reduces the utilization rate of the unit magnetic steel

Method used

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  • Stator surface mounted doubly salient pole permanent magnet motor

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Embodiment Construction

[0016] The stator surface-mounted double salient permanent magnet motor of the present invention includes two parts, the stator and the rotor. According to different application occasions, two forms of inner rotor or outer rotor can be adopted. Both the stator and the rotor are double salient pole structures, and the stator slots Number 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 belonging to the same phase (N s / m) winding coils can be connected in series / parallel / series-parallel as required; each stator tooth i...

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Abstract

The invention discloses a stator surface mounted doubly salient pole permanent magnet motor which has simple and firm structure, stronger torque output capacity and higher power density, comprises a stator (1) and a rotor (4), and is characterized in that the rotor (4) is positioned in the stator (1); the stator (1) and the rotor (4) are both in doubly salient pole structure; the stator (1) is provided with a concentrated winding (3) and a permanent magnet (2), wherein, each concentrated winding coil of any phase of the concentrated winding (3) is positioned in an iron-core groove of the stator (1), and each phase concentrated winding coil is in series connection or in parallel connection; the permanent magnet (2) is positioned on the top part of tooth of the stator (1). The motor has no-load counter-electromotive force of a high degree approximate square wave (a straight flute rotor) or a sinusoidal wave (a tapered slot rotor), stronger torque output capacity, higher power density andstronger anti-demagnetizing capacity, and is especially suitable for being used as a driving element of an alternating current governor system.

Description

technical field [0001] The invention is a motor with simple and firm structure, strong torque output capability 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 of problems during the ...

Claims

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Application Information

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IPC IPC(8): H02K21/30H02K1/17H02K21/26H02K21/02
Inventor 花为程明张淦
Owner SOUTHEAST UNIV
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