Two-degree-of-freedom stator permanent magnet biased permanent magnet bearingless motor

A bearingless motor and permanent magnet bias technology, which is applied to synchronous motors with stationary armatures and rotating magnets, holding devices with magnetic attraction or thrust, and electrical components, etc., can solve the problem of small radial suspension force and low precision. Low, complex control and other issues, to achieve the effect of large radial suspension force and uniform air gap

Active Publication Date: 2014-03-26
淮安市清江浦区市场监管综合服务中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When selecting the thickness of the permanent magnet, it is necessary to comprehensively consider the mutual constraint relationship between the magnitude of the radial levitation force and the magnitude of the torque. Therefore, the generation of the radial levitation force is limited; at the same time, there is an Strong coupling req

Method used

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  • Two-degree-of-freedom stator permanent magnet biased permanent magnet bearingless motor
  • Two-degree-of-freedom stator permanent magnet biased permanent magnet bearingless motor

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Embodiment Construction

[0017] Such as figure 1 , 2 As shown, the present invention includes a motor casing, a rotor and a stator are arranged in the motor casing, and the stator includes a stator core 5, and the left magnetic pole core 1, the right magnetic pole core 2, and the stator core 5 are symmetrically arranged on both sides of the stator core 5. The torque winding 6 and the suspension winding 7 are arranged in the stator slot, the torque winding 6 is located in the outer layer of the stator slot, the suspension winding 7 is located in the inner layer of the stator slot, and the stator core 5 is provided with axially magnetized annular stator permanent magnets on both axial sides. Magnet A3, annular stator permanent magnet B4; the rotor includes a rotor core 9, and the rotor iron core 9 is provided with a radially magnetized annular rotor permanent magnet 8 and a rotating shaft 10 along the axial direction; the annular stator permanent magnet A3 and annular stator permanent magnet B4 provide ...

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PUM

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Abstract

The invention discloses a two-degree-of-freedom stator permanent magnet biased permanent magnet bearingless motor, and aims to overcome the shortcomings of an existing permanent magnet bearingless motor. The stator permanent magnet biased permanent magnet bearingless motor comprises a motor shell, a rotor and a stator are arranged in the motor shell, the stator comprises a stator core, a left pole core and a right pole core are symmetrically arranged on two sides of the stator core, a torque winding and a suspension winding are arranged in a stator slot of the stator core, an axial magnetized annular stator permanent magnet A and an axial magnetized annular stator permanent magnet B are axially arranged on two sides of the stator core, the rotor comprises a rotor core, and the rotor core is axially provided with a radial magnetized annular rotor permanent magnet and a rotating shaft. The stator permanent magnet biased permanent magnet bearingless motor is simple to control, realizes mutually independent suspension control and torque control, and can generate larger radial suspension force.

Description

technical field [0001] The invention relates to the technical field of motor equipment, in particular to a two-degree-of-freedom stator permanent magnet bias permanent magnet bearingless motor with simple control and greater radial levitation force. Background technique [0002] Bearingless motors have no friction, no wear, no lubrication, and are easy to achieve higher speed and higher power operation, especially the permanent magnet bearingless motors have simple structure, high operating reliability, small size, light weight and high efficiency. It has the advantages of high power density and other advantages, and has broad application prospects in the fields of flywheel energy storage, high-speed machine tool spindle motors and sealed pumps, centrifuges, compressors, and high-speed micro hard disk drive devices. [0003] At present, the existing permanent magnet type bearingless motor is superimposed on the torque winding of the stator slot of the traditional permanent m...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K1/17H02K1/27H02K21/12H02N15/00
Inventor 张涛倪伟丁卫红邬清海叶小婷张惠萍
Owner 淮安市清江浦区市场监管综合服务中心
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