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Bearingless permanent magnet sheet motor

A bearingless, thin-film technology, applied in the direction of magnetic circuits, electric components, electrical components, etc., can solve the problems of large volume and insufficient axial rigidity, and achieve the effect of high system power, compact mechanical structure, and solving operation drawbacks.

Active Publication Date: 2019-02-15
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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  • Bearingless permanent magnet sheet motor
  • 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 axial bottom of the motor is a steel chassis 11, and the top surface of the steel chassis 11 is fixedly connected with an iron core yoke 5 in the middle, and the two are on the same axis line. A cross-shaped thin-plate rotor 1 and a rotor permanent magnet 3 are coaxially arranged directly above the core yoke 5 , and the rotor permanent magnet 3 is in the shape of a round pie, coaxially and fixedly connected to the top surface of the cross-shaped thin-plate rotor 1 . The outer diameter of the rotor permanent magnet 3 is smaller than that of the cross-shaped sheet rotor 1, and the two form a whole. The rotor permanent magnet 3 is axially magnetized, and the bottom end close to the cross-shaped sheet rotor 1 is an N pole, and the top end is an S pole.

[0017] The radial section of the cross-shaped thin-plate rotor 1 is cross-shaped and has a 4-pole salient-pole structure. An annular aluminum alloy ring 15 is tigh...

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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 suspension bearing is a high-performance bearing that uses a magnetic field to suspend the rotor in space and realizes no mechanical contact between the rotor and the stator. Due to 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. The bearingless sheet motor is a new type of motor that combines magnetic suspension bearings with bearingless technology. It uses two sets of windings with different pole pairs in the stator slot (torque winding and suspension force winding) to work together to generate a magnetic field. The magnetic field is synthesized by controlling superposition The magnitude and direction of the levitation force can be controlle...

Claims

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Application Information

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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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