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High-power density permanent magnet motor

A high power density, permanent magnet motor technology, applied in the direction of magnetic circuit, electric components, electrical components, etc., can solve the problem of ungiven power density, etc., to reduce self-link flux leakage, easy to locate, and improve power density. Effect

Inactive Publication Date: 2018-11-30
GUANGDONG WELLING ELECTRIC MACHINE MFG
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  • Abstract
  • Description
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Problems solved by technology

However, the above-mentioned patents only rely on parameters such as stator slot width, tooth width, and yoke width to average the flux density, and fail to consider the influence of the stator shape and structure on the motor magnetic field and loss, etc., and are not suitable for high power density motor structures. , also in order to reduce the vibration and noise of the motor through the combination method between the stator core and the casing, no structure that can comprehensively consider the power density and suppress vibration and noise

Method used

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Embodiment Construction

[0055] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0056] Such as figure 1 As shown, an embodiment of the present invention is a permanent magnet brushless DC motor, including a casing 1, a regular polygonal stator core 2, an asymmetric hybrid stacked rotor core 3, a permanent magnet 4, a shaft 5, a winding 6 and an insulation Framework 7.

[0057] Such as image 3 and 4 As shown, the stator core 2 is surrounded by 12 T-shaped tooth yokes 21, and the stator core 2 and the casing 1 are in contact through the connection points between adjacent T-shaped tooth yokes 21, and the contact parts form The contact area 22, the outer surface or top surface of the yoke portion 211 of each T-shaped toothed yoke 21 is a p...

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Abstract

The invention relates to the field of permanent magnet motors and discloses a high-power density permanent magnet motor. The high-power density permanent magnet motor comprises a case, a stator core,an asymmetric hybrid rotor core, permanent magnets, a shaft, windings and insulating frames, wherein a contact area is formed at the contact part of the stator core and the case and filling areas areformed in gaps between the stator core and the case; the asymmetric hybrid rotor core comprises a rotating shaft sleeve ring, a shaft hole, sectors, connection bridges and support bosses; and the adjacent sectors have different plane structures. According to the high-power density permanent magnet motor, the production process of the motor can be simplified and the structural strength of the motorcan also be improved.

Description

technical field [0001] The invention relates to the field of permanent magnet motors, in particular to a permanent magnet motor with high power density. Background technique [0002] Traditional brushless DC motors use surface-mounted magnetic tiles or built-in radially magnetized magnet steel structures, which have low power density and are limited by cost factors. The magnetic flux per pole of the motor is increased by tangentially magnetized parallel magnetic circuit structures. The existing tangential magnetization structure still has the problem of large flux leakage, which limits the performance improvement of the motor. [0003] Patent CN201611226568.0 designs a rotor core, which has at least one tooth sector disconnected from the rotor collar, and at least one tooth sector connected to the shaft collar. This suppresses magnetic flux leakage near the axis. The outer ring of the rotating shaft of the rotor core is provided with a positioning protrusion for positionin...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K1/27H02K5/24
CPCH02K1/165H02K1/2766H02K5/24H02K2205/12
Inventor 李文瑞李虎甘峰于明湖迟闯
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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