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Built-in hybrid permanent magnet memory motor with local magnetic circuits in parallel

專利號
US11177706B2
公開日期
2021-11-16
申請人
SOUTHEAST UNIVERSITY(CN Nanjing)
發(fā)明人
Hui Yang; Hao Zheng; Heyun Lin
IPC分類
H02K1/27; H02K1/02; H02K1/14; H02K1/18
技術(shù)領(lǐng)域
permanent,magnet,magnets,rotor,magnetic,flux,stator,cobalt,core,motor
地域: Jiangsu

摘要

The present invention discloses a built-in hybrid permanent magnet memory motor with local magnetic circuits in parallel, including a hybrid permanent magnet rotor, a stator, armature windings and a rotating shaft. The armature windings are disposed on the stator, and the stator is disposed outside the hybrid permanent magnet rotor. The hybrid permanent magnet rotor includes a rotor core, first permanent magnets, second permanent magnets and V-shaped magnetic barriers. The rotor core is disposed outside the rotating shaft, the V-shaped magnetic barriers are disposed inside the rotor core, the V-shaped magnetic barriers with openings facing outwards are equally distributed in a circumferential direction of the rotor core, the first permanent magnet is disposed in the opening of the V-shaped magnetic barrier, the second permanent magnet is disposed between the two adjacent V-shaped magnetic barriers, a coercivity of the first permanent magnet is greater than a coercivity of the second permanent magnet, and cross sections of the first permanent magnets and the second permanent magnets are in a straight line. According to the present invention, the problem that the size design of the permanent magnet is limited by the space position is solved, and the anti-demagnetization ability of the low-coercivity permanent magnets and the flux weakening ability of the motor are enhanced.

說明書

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FIG. 2 is a schematic diagram of relative space positions of a first permanent magnet, a second permanent magnet and a V-shaped magnetic barrier of the motor according to the present invention.

FIG. 3 is a distribution diagram of magnetic induction lines when the second permanent magnets of the motor are in a flux increasing state according to the present invention.

FIG. 4 is a distribution diagram of magnetic induction lines when the second permanent magnets of the motor are in a flux weakening state according to the present invention.

DETAILED DESCRIPTION

The present invention will be further described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, various equivalent modifications made by those skilled in the art to the present invention shall fall within the scope defined by the appended claims of the present application.

權(quán)利要求

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