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Halbach array square motor

A square and array technology, applied in the field of square motors, can solve the problems of motors that are prone to magnetic flux leakage and rolling

Active Publication Date: 2021-05-07
NINGBO JINGCHENG CAR IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Viewed from the direction of the rotating shaft, the internal structure of the traditional permanent magnet motor has a cylindrical shell with a rotor and a permanent magnet fixed on the inner surface of the shell. The motor with this structure is prone to magnetic flux leakage. During transportation and installation It is also easy to roll, and is gradually replaced by square motors in some occasions; as one of the most important parts of many mechanical equipment, the motor is closely related to whether the equipment can run smoothly, accurately and reliably

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1: a kind of Halbach array square motor, structure such as figure 1 As shown, it includes a stator 1 and a rotor 2 located inside the stator 1. The stator 1 includes a casing 11 with a square radial cross-section. The four corners of the outer wall of the casing 11 are transitioned by arc surfaces, and The inner wall of the housing 11 is provided with permanent magnets 12 composed of Halbach arrays to reduce the harmonic content of the air gap magnetic field. The permanent magnets 12 include angle magnets 121 located at the four corners of the inner wall of the housing 11, and each angle magnet 121 has two ends. Closely attached to a side magnet 122, the magnetic field direction inside the corner magnet 121 is along the radial direction of the rotor 2, and the magnetic field direction inside the side magnet 122 is along the tangential direction of the rotor 2; any two adjacent corner magnets 121 The magnetic poles are set in opposite directions, the magnetic ...

Embodiment 2

[0033] Embodiment 2: a kind of Halbach array square motor, structure such as image 3 As shown, it includes a stator 1 and a rotor 2 located inside the stator 1. The stator 1 includes a casing 11 with a square radial cross-section. The four corners of the outer wall of the casing 11 are transitioned by arc surfaces, and The inner wall of the housing 11 is provided with permanent magnets 12 composed of Halbach arrays to reduce the harmonic content of the air gap magnetic field. The permanent magnets 12 include angle magnets 121 located at the four corners of the inner wall of the housing 11, and each angle magnet 121 has two ends. Closely attached to a side magnet 122, the magnetic field direction inside the corner magnet 121 is along the radial direction of the rotor 2, and the magnetic field direction inside the side magnet 122 is along the tangential direction of the rotor 2; any two adjacent corner magnets 121 The magnetic poles are set in opposite directions, the magnetic ...

Embodiment 3

[0043] Embodiment 3: a kind of Halbach array square motor, structure such as Figure 5 As shown, it includes a stator 1 and a rotor 2 located inside the stator 1. The stator 1 includes a casing 11 with a square radial cross-section. The four corners of the outer wall of the casing 11 are transitioned by arc surfaces, and The inner wall of the housing 11 is provided with permanent magnets 12 composed of Halbach arrays to reduce the harmonic content of the air gap magnetic field. The permanent magnets 12 include angle magnets 121 located at the four corners of the inner wall of the housing 11, and each angle magnet 121 has two ends. Closely attached to a side magnet 122, the magnetic field direction inside the corner magnet 121 is along the radial direction of the rotor 2, and the magnetic field direction inside the side magnet 122 is along the tangential direction of the rotor 2; any two adjacent corner magnets 121 The magnetic poles are set in opposite directions, the magnetic...

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Abstract

The invention discloses a Halbach array square motor. The Halbach array square motor disclosed by the present invention comprises a stator (1) and a rotor (2) located in the stator (1); the stator (1) comprises a shell (11) with a square radial cross section outline; four corners of the outer wall of the shell (11) are in arc surface transition; permanent magnets (12) composed of Halbach arrays are distributed along the inner wall of the shell (11); the permanent magnets (12) comprise angle magnets (121) located at four corners of the inner wall of the shell (11), and two ends of each angle magnet (121) are tightly attached to two side magnet (122) respectively; the magnetic poles of any two adjacent angle magnets (121) are arranged in opposite directions; the included angle between the magnetic pole direction of any side magnet (122) and the magnetic pole direction of the angle magnet (121) tightly attached to the side magnet (122) is an obtuse angle. According to the halbach array square motor of the invention,the harmonic content of a magnetic field can be effectively reduced,the output torque can be improved, and the power density of the motor can be increased.

Description

technical field [0001] The invention relates to a square motor, in particular to a Halbach array square motor. Background technique [0002] Viewed from the direction of the rotating shaft, the internal structure of the traditional permanent magnet motor has a cylindrical shell with a rotor and a permanent magnet fixed on the inner surface of the shell. The motor with this structure is prone to magnetic flux leakage. During transportation and installation It is also easy to roll, and is gradually replaced by square motors in some occasions; as one of the most important parts of many mechanical equipment, the motor is closely related to whether the equipment can run smoothly, accurately and reliably. In the 1980s, Professor Klaus Halbach first proposed the concept of Halbach-type permanent magnet array, and found that the structure has the characteristics of one-sided magnetic concentration. The Halbach permanent magnet motor has the advantages of small size, wide speed range...

Claims

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Application Information

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IPC IPC(8): H02K1/17H02K1/24H02K5/04
CPCH02K1/17H02K1/24H02K5/04H02K2201/03
Inventor 任成波周开放李文亮徐盼
Owner NINGBO JINGCHENG CAR IND
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