Combined magnetic pole type built-in radial linear permanent magnet synchronous motor

A technology for permanent magnet synchronous motors and combined magnetic poles, applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuit shape/style/structure, magnetic circuits, etc., can solve the problem of motor performance degradation, irreversible demagnetization, harmonics and other problems, to achieve the effect of strong anti-demagnetization ability, increased efficiency and operational reliability, and reduced costs

Active Publication Date: 2016-03-02
HARBIN INST OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of harmonics and partial irreversible demagnetization in the air-gap magnetic field of rare earth permanent magnet synchronous motors driven by sine waves, especially at high temperatures, the irreversible demagnetization of permanent magnet materials will lead to the decline of motor performance , providing a combined magnetic pole type built-in radial inline permanent magnet synchronous motor

Method used

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  • Combined magnetic pole type built-in radial linear permanent magnet synchronous motor
  • Combined magnetic pole type built-in radial linear permanent magnet synchronous motor
  • Combined magnetic pole type built-in radial linear permanent magnet synchronous motor

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specific Embodiment approach 1

[0017] Specific implementation mode one: the following combination image 3 , Figure 5 and Image 6 Describe this embodiment. The combined magnetic pole type built-in radial inline permanent magnet synchronous motor described in this embodiment includes a rotor and a stator. The rotor is arranged inside the stator. A radial air gap is left between the rotor and the stator. The stator includes The stator core 1 and the stator winding 2, the stator winding 2 is set in the inner stator slot of the stator core 1; the rotor includes a plurality of rotor poles 3 and the rotor core 4, and the rotor core 4 is uniformly arranged in a layer of inline permanent magnet installation slots along the circumferential direction 3-3, a rotor pole 3 is arranged in each inline permanent magnet installation groove 3-3, and the inline permanent magnet installation groove 3-3 extends along the axial direction;

[0018] The rotor pole 3 includes a rare earth permanent magnet pole 3-1 and two ferri...

specific Embodiment approach 2

[0026] Specific implementation mode two: the following combination Figure 4 to Figure 6 Describe this embodiment. The combined magnetic pole type built-in radial inline permanent magnet synchronous motor described in this embodiment includes a rotor and a stator. The rotor is arranged inside the stator. A radial air gap is left between the rotor and the stator. The stator includes The stator core 1 and the stator winding 2, the stator winding 2 is set in the inner stator slot of the stator core 1; the rotor includes a plurality of rotor poles 3 and the rotor core 4, and the rotor core 4 is evenly distributed along the circumferential direction with n layers of inline permanent magnet installation slots 3-3, a rotor pole 3 is arranged in each inline permanent magnet installation groove 3-3, and the inline permanent magnet installation groove 3-3 extends along the axial direction; with n inline permanent magnets on the same radius The installation grooves 3-3 are parallel to ea...

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Abstract

A combined magnetic pole type built-in radial linear permanent magnet synchronous motor belongs to the field of a permanent magnet motor, and aims to solve the problems that a harmonic wave easily occurs in an air gap magnetic field of a rare earth permanent magnet synchronous motor driven by a sine wave and local irreversible demagnetization occurs easily. The combined magnetic pole type built-in radial linear permanent magnet synchronous motor comprises a rotor and a stator, one or multiple layer of linear permanent magnet mounting grooves are uniformly and circumferentially distributed in a rotor core, a rotor magnetic pole is disposed in each mounting groove, and each mounting groove extends in an axial direction; each rotor magnetic pole comprises a rare earth permanent-magnet magnetic pole and two ferrite permanent-magnet magnetic poles; the left and right end faces of each rare earth permanent-magnet magnetic pole are respectively provided with the one corresponding ferrite permanent-magnet magnetic pole, and the rare earth permanent-magnet magnetic pole and the two corresponding ferrite permanent-magnet magnetic poles form continuous linear magnetic pole structure; and the magnetizing directions of each rare earth permanent-magnet magnetic pole and the corresponding two ferrite permanent-magnet magnetic poles are parallel and same. The permanent magnet synchronous motor having structure enables a harmonic wave content of the air gap magnetic field to be reduced, and improves motor efficiency; and price of a ferrite permanent magnetic material is low, so cost is lowered.

Description

technical field [0001] The invention relates to a combined magnetic pole type rotor structure, which belongs to the field of permanent magnet motors. Background technique [0002] With the increasingly serious problems of the environment and energy crisis, high-efficiency and energy-saving electrical equipment has become a development trend, which greatly promotes the development of high-power-density, high-efficiency rare earth permanent magnet synchronous motors. However, the price of rare earth permanent magnet materials has remained high, and rare earth permanent magnet motors are greatly affected by price fluctuations of rare earth permanent magnet materials, so the cost of rare earth permanent magnet motors is also affected. The development space of magnetic synchronous motor. Moreover, rare earth materials are non-renewable resources, and excessive use of rare earth materials in motor systems will also cause damage to the environment. Therefore, under the premise of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/14H02K1/27H02K29/03
CPCH02K1/2746H02K21/14H02K29/03H02K2213/03
Inventor 郑萍程路明林展汐宋志翌张书宽
Owner HARBIN INST OF TECH
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