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A bearingless permanent magnet sheet motor

A bearingless, thin-film technology, applied in magnetic circuits, electromechanical devices, electrical components, etc., can solve the problems of insufficient axial stiffness and large volume, and achieve the effects of compact mechanical structure, high system power, and improved system robustness.

Active Publication Date: 2020-09-25
ZHENJIANG YUANDONG ELECTRIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of large volume and insufficient axial rigidity of traditional bearingless permanent magnet sheet motors in pump applications, and propose a new type of bearingless permanent magnet sheet motor with compact structure and improved dynamic performance

Method used

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  • A bearingless permanent magnet sheet motor
  • A bearingless permanent magnet sheet motor
  • A bearingless permanent magnet sheet motor

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Experimental program
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Embodiment Construction

[0016] see figure 1 and figure 2 , In the axial direction, the bottom of the motor is the steel chassis 11, and the iron core yoke 5 is fixedly connected in the middle above the top surface of the steel chassis 11, and the two are on the same axis line. A cross-shaped sheet rotor 1 and a rotor permanent magnet 3 are coaxially arranged directly above the iron core yoke 5 . The outer diameter of the rotor permanent magnet 3 is smaller than the outer diameter of the cross-shaped sheet rotor 1, and the two constitute a whole. The rotor permanent magnet 3 is magnetized in the axial direction, and the bottom end that is close to the cross-shaped sheet rotor 1 is the N pole, and the top end is the S pole.

[0017] The radial section of the cross-shaped sheet rotor 1 is cross-shaped and has a 4-pole salient pole structure. The outer ring of the cross-shaped sheet rotor 1 is tightly wrapped with an annular alloy aluminum ring 15, which plays a protective role.

[0018] Six identic...

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Abstract

The invention discloses a bearingless permanent magnet sheet motor. A circular-cake-shaped rotor permanent magnet is coaxially and fixedly connected to the axial top surface of a cross-shaped sheet rotor with a cross-shaped radial section; six identical L-shaped stator iron core columns are uniformly distributed on the periphery of the cross-shaped sheet rotor in the circumferential direction, wherein each L-shaped stator iron core column is composed of an axial stator yoke and radial stator teeth, and the stator teeth and the cross-shaped sheet rotor 1 are arranged in a radial opposite mode,and a radial air gap is formed therebetween; the outside of a disc-shaped iron core magnetic yoke is fixedly sleeved with the bottoms of the stator yokes of the six L-shaped stator iron core columns;the stator yoke of each L-shaped stator iron core column is wound with a set of torque windings and suspension force windings; a ring-shaped stator permanent magnet is coaxially and fixedly arranged on the top surfaces of the stator teeth of the six L-shaped stator core columns; and the stator permanent magnet and the rotor permanent magnet are both magnetized in the axial direction, and the magnetizing directions of the stator permanent magnet and the rotor permanent magnet are opposite. According to the bearingless permanent magnet sheet motor, the reliability and the axial rigidity of the rotor can be improved.

Description

technical field [0001] The invention relates to a bearingless permanent magnet motor, which is suitable for many fields such as sealed pumps, industrial pharmacy and life sciences. Background technique [0002] Magnetic bearing is a high-performance bearing that uses a magnetic field to suspend the rotor in space and achieves no mechanical contact between the rotor and the stator. Because of its advantages of no friction, no wear, no lubrication, high speed and high precision, It is widely used in mechanical processing, energy storage and other fields. Bearingless sheet motor is a new type of motor that combines magnetic suspension bearing and bearingless technology. It uses two sets of windings with different pole pairs (torque winding and suspension force winding) in the stator slot to work together to generate a magnetic field. The size and direction of the suspending force can be controlled, so as to realize the stable suspension operation of the motor rotor. In additi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K1/17H02N15/00
CPCH02K1/17H02K1/2706H02N15/00
Inventor 朱熀秋张炜华逸舟许颖黄磊顾志伟
Owner ZHENJIANG YUANDONG ELECTRIC MOTOR
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