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Novel high-efficiency composite permanent magnet motor Halbch iron core structure

A permanent magnet motor, iron core structure technology, applied in the shape/style/structure of magnetic circuit, synchronous motor with static armature and rotating magnet, magnetic circuit, etc., to simplify the control mode of the frequency converter, improve the output performance, The effect of reducing harmonic content

Pending Publication Date: 2020-09-25
JIANGSU AEROSPACE POWER ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to design a new composite permanent magnet synchronous motor Halbach iron core structure, so that the 380V-68p-18kW motor has good running performance, and can reduce motor noise and vibration, while improving the working performance of the motor performance

Method used

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  • Novel high-efficiency composite permanent magnet motor Halbch iron core structure
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Embodiment Construction

[0017] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0018] Such as figure 1 The one shown includes the rotor core 3 and the stator core 1 arranged coaxially. The stator core 1 is formed by stacking several stator punches. The inner ring surface of the stator punches is provided with a winding hole 5, and the stator core is placed in the winding hole 5. The winding 2 and the winding hole 5 are set as long strips distributed radially, and the width gradually increases from the inner ring surface to the outside, and the angle between the edge lines on both sides is 4° (such as figure 2 As shown), the outer ring surface of the rotor core 3 is inlaid with the magnetic steel 4, and the magnetization method of the m...

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Abstract

The invention discloses a novel efficient composite permanent magnet motor Halbch iron core structure. The structure comprises a rotor iron core and a stator iron core which are coaxially arranged, the stator core is formed by superposing a plurality of stator punching sheets, and winding holes are formed in the inner ring surface of the stator punching sheet. Stator windings are placed in the winding holes, the winding holes are arranged to be in a long strip shape distributed in the radial direction, and the widths of the winding holes are gradually increased from the inner ring face to theouter ring face. Magnetic steel is embedded in the outer ring face of the rotor core, a Halbch array is adopted as the magnetic steel magnetizing mode, and each pole of the Halbch array is composed oftwo pieces of magnetic steel and is wound by heat-resisting high-strength nonmetal carbon fibers. The novel efficient composite permanent magnet motor Halbch iron core structure can reduce the harmonic content of the motor, improve the output performance index of the motor and effectively reduce the loss of the motor.

Description

technical field [0001] The invention relates to the technical field of permanent magnet motors, in particular to a novel high-efficiency composite permanent magnet motor Halbch iron core structure. Background technique [0002] Among all kinds of driving motors, permanent magnet synchronous motors have high energy density, high efficiency, small size, low inertia, and fast response, so they have good application prospects. Permanent magnet motors not only have the advantages of brushless structure and reliable operation of AC motors, but also have the advantages of good speed regulation performance of DC motors, and do not require excitation windings. They can be small in size and high in control efficiency. Application hotspots. [0003] At present, the theory of permanent magnet synchronous motors is not as perfect as that of DC motors and induction motors, and there are still many issues that need further research, such as reducing motor loss, improving output performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/14H02K1/16H02K1/27
CPCH02K1/165H02K1/278H02K21/14H02K2213/03
Inventor 陈虎威钱伟赵勇程寿国
Owner JIANGSU AEROSPACE POWER ELECTRIC
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