Built-in hybrid permanent magnet motor

A hybrid permanent magnet, built-in technology, applied in the direction of magnetic circuits, electrical components, electromechanical devices, etc., can solve the problems of reducing torque ripple, unreasonable, unable to improve motor performance, etc., to reduce magnetic flux leakage and improve utilization , Improving the effect of anti-demagnetization ability

CN108808910AActive Publication Date: 2018-11-13JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-11-13

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Abstract

The invention discloses a built-in hybrid permanent magnet motor. V-shaped grooves (2) are formed in the circumferential direction of a rotor (2); each side of the V-shaped groove is divided into an upper rectangular structure and a lower rectangular structure; the two rectangular structures are divided into a large rectangular structure (8) and a small rectangular structure (7); permanent magnetsmade of ferrite and neodymium iron boron are arranged in the grooves separately; Z-shaped reinforcing ribs (5) are arranged at the bottoms of the V-shaped grooves; a horizontal line-shaped groove (3)is formed between each V-shaped groove and the outer edge of the rotor; a neodymium-iron-boron permanent magnet (4) is placed in each horizontal line-shaped groove; a vertical magnetizing mode is adopted for all the permanent magnets; the V-shaped grooves and the horizontal line-shaped grooves form a group of groove structures; and a sickle-shaped magnetic isolation bridge (6) is arranged betweenthe two groups of groove structures. According to the built-in hybrid permanent magnet motor, the permanent magnet structures with different materials are arranged asymmetrically, so that the utilization rate, the output torque and efficiency of the permanent magnets of the motor are improved, and the torque pulsation is lowered.
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Description

technical field

[0001] The invention belongs to the technical field of motors and relates to a built-in hybrid permanent magnet motor. Background technique

[0002] At present, the whole world is paying great attention to the issue of efficient energy utilization. How to achieve efficient energy utilization has become the theme of world development; at present, there is still a problem of relatively low energy utilization in industrial motors. By improving the efficiency of industrial motors, significant efficient use of energy. Since the built-in permanent magnet motor adopts permanent magnet excitation and has no rotor resistance loss during stable operation, it can effectively reduce the total loss, so it has great room for efficiency improvement and advantages. According to the characteristics of the interior hybrid permanent magnet motor, the electromagnetic performance such as the efficiency of the interior hybrid permanent magnet motor can be improved by optimizing t...

Examples

Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] A built-in hybrid permanent magnet motor, comprising two parts of a rotor and a stator, the rotor (1) is located in the stator (9); the rotor is provided with a V-shaped groove (2) along the circumferential direction; the V An inline groove (3) is arranged between the groove (2) and the outer edge of the rotor; the V-shaped groove and the inline groove form a group of groove structures, and the permanent magnets in the group of grooves have the same polarity; the two groups Sickle-shaped magnetic isolation bridges (6) are arranged between the slot structures.

[0026] Each side of the V-shaped groove is divided into upper and lower parts; the upper and lower parts are two rectangular structures with different widths and lengths, and the two rectangular structures are divided into a large rectangular structure (8) and a small rectangular structure (7), and the c...