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Few-slot multi-pole permanent magnet synchronous motor with magnetic separation structure

A permanent magnet synchronous motor and magnetic separation technology, which is applied in the direction of magnetic circuit shape/style/structure, magnetic circuit, electrical components, etc., can solve the problem of reducing the magnetic field intensity of coil induction, so as to improve the induction intensity of the coil, improve the efficiency of the motor, Avoid noise effects

Pending Publication Date: 2021-05-28
江苏胜牌科技有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the shortcomings existing in the prior art, the present invention provides a multi-pole permanent magnet synchronous motor with few slots and magnetic separation structure, which solves the technical problem that the coil induced magnetic field strength decreases due to the ineffective coupling of some magnetic circuits in the stator teeth

Method used

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  • Few-slot multi-pole permanent magnet synchronous motor with magnetic separation structure
  • Few-slot multi-pole permanent magnet synchronous motor with magnetic separation structure
  • Few-slot multi-pole permanent magnet synchronous motor with magnetic separation structure

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Embodiment Construction

[0027] The structural representation of the present invention will be described below in conjunction with the accompanying drawings.

[0028] Such as figure 2 As shown, the few-slot multi-pole permanent magnet synchronous motor of the magnetic separation structure of this embodiment includes a stator core 1 and a rotor 2, the rotor 2 is an inner rotor or an outer rotor, and the rotor 2 includes S magnetic poles 21, N The magnetic pole 22, the top tooth gap 13 is formed at the tooth tip of each stator tooth of the stator core 1, the top tooth gap 13 expands the air gap between the tooth top and the rotor 2, and extends from the bottom of the top tooth gap 13 to the tooth root A root gap 14 is formed, and a top gap 13 and a root gap 14 separate the stator teeth into left unit teeth 12 and right unit teeth 11 , so that the magnetic circuit between the left unit teeth 12 and the right unit teeth 11 is disconnected.

[0029] In the above embodiment, the width of the top tooth gap...

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Abstract

The invention relates to a few-slot multi-pole permanent magnet synchronous motor with a magnetic separation structure. The motor comprises a stator core and a rotor, the rotor is an inner rotor or an outer rotor, a top tooth gap is formed at the tooth crest of each stator tooth of the stator core, the top tooth gap enlarges an air gap between the tooth crest and the rotor, the bottom of the top tooth space extends to the tooth root to form a root tooth space, and the stator tooth is divided into a left unit tooth and a right unit tooth by the top tooth space and the root tooth space, so that a magnetic circuit in the middle of the tooth between the left unit tooth and the right unit tooth is disconnected. Through the tooth root gap, a magnetic circuit which is located in the tooth middle part and causes invalid coupling on an original closed tooth structure is cut off, so that the magnetic circuit is kept closed at the tooth crest part, the coil induction intensity is improved, and the motor efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a multi-pole permanent magnet synchronous motor with few slots and a magnetic separation structure. Background technique [0002] Since the number of stator teeth of the stator core is similar to the number of poles of the rotor, the near-pole slot permanent magnet synchronous motor is very suitable for applications in low-speed and high-torque places. The corresponding increase in proportion makes winding difficult. In order to meet the application requirements of low speed and high torque, the permanent magnet synchronous motor can be designed as a structure with fewer slots and more poles, that is, the number of stator teeth is much smaller than the number of rotor poles. However, its disadvantage is that due to the reduction in the number of stator teeth, the top of the stator tooth is wider, which is similar to the length of the rotor pole arc, so that a considerable part of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/02H02K1/14
CPCH02K1/146H02K16/02H02K2213/03
Inventor 王朴
Owner 江苏胜牌科技有限公司
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