Double-stator excitation full-degree-of-freedom bearingless motor and active control method thereof

A bearingless motor and active control technology, which is applied in the direction of winding excitation motor control, current controller, synchronous motor with stationary armature and rotating magnet, etc., can solve the problem of complex mechanical structure and anti-disturbance of bearingless motor system Poor ability and other problems, to achieve good machinability, improve poor anti-disturbance ability, and improve poor stability

Active Publication Date: 2021-03-19
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the defects and improvement needs of the prior art, the present invention provides a dual-

Method used

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  • Double-stator excitation full-degree-of-freedom bearingless motor and active control method thereof
  • Double-stator excitation full-degree-of-freedom bearingless motor and active control method thereof
  • Double-stator excitation full-degree-of-freedom bearingless motor and active control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0044] Example 1:

[0045] A double-son excitation full degree of free-to-axis motor, such as figure 1 As shown, including: rotating shaft 8, and two stators set along the rotating shaft 8 and a rotor disk, the rotor disk is located between two stators;

[0046] The rotor disk includes a rotor core 4, a permanent magnet module 3, 5 of the two circular surfaces of the rotor core; alternately arrangement of permanent magnets in each permanent magnet module, and the permanent magnet module produces a rotor forever Magnetic field; in this embodiment, the permanent magnetic magnetic field polarogue generated by the permanent magnet module is 7;

[0047] The stator includes a stator core 1, 7, and a stator winding 2, 6 disposed on the stator cores 1, 7; in this embodiment, 18 teeth each of the stator core, two stator iron core teeth are aligned with each other. The stator windings are suspended, torque integrated windings;

[0048] When working, the stator windings 2, 6 generate the fi...

Example Embodiment

[0058] Example 2:

[0059] A double-son excitation full-degree-free uncontroller, the present embodiment is similar to the above-described Embodiment 1, and in the present embodiment, the stator winding is a suspension winding, a torque winding separation structure, in particular, stator windings including mutual The independent suspension winding and a torque winding, the current generates a first electromagnetic field after passing the current, and generates a second armature magnetic field after passing the current in the torque winding;

[0060] When the floating windings of the two stator are passed into the same phase straight axis suspension current, the motor generates a suspension in the radial X direction; when the two stator is passed into the same phase intersection, the motor generates a direction Y direction. When the suspension of the two stator is passed into the inverted straight axis suspension current, the motor generates a recovery torque around the radial Y di...

Example Embodiment

[0062] Example 3:

[0063] The active control method of the double-strand excitation full-degreeless non-axle motor provided by the above Example 1, including:

[0064] By controlling the suspension current components of the two stators, the direct axis current size and phase relationship are controlled to achieve the active control of the four rotor freedom of rotith-axis translation of the rotor discharge translation and radial rotation;

[0065] By controlling the torque current components of the two stators, the direct axis current size and phase relationships are controlled to achieve the active control of the two rotor freedoms of rotor disk axial translation degree and axial rotation degree of freedom.

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Abstract

The invention discloses a double-stator excitation full-degree-of-freedom bearingless motor and an active control method thereof and belongs to the field of motor design and control. The two stators are arranged along the rotating shaft; each stator comprises a stator iron core and a stator winding arranged on the stator iron core; the stator winding is of a suspension winding and torque winding separation structure or a suspension and torque integrated winding structure; the rotor disc is located between the two stators and comprises a rotor iron core and a permanent magnet module which is attached to the rotor iron core in a surface-mounted mode, and the permanent magnet module generates a rotor permanent magnetic field; during working, the stator winding generates a first armature magnetic field and a second armature magnetic field; the difference between the first armature magnetic field and the rotor permanent magnetic field is a pair of poles for realizing radial four-degree-of-freedom active control; and the second armature magnetic field and the rotor permanent magnet magnetic field have the same number of pole pairs and are used for realizing axial two-degree-of-freedom active control. According to the motor, full-degree-of-freedom active control of the bearingless motor can be realized, system stability is improved, and the system structure is simplified.

Description

technical field [0001] The invention belongs to the field of motor design and control, and more specifically relates to a double-stator excitation full-degree-of-freedom bearingless motor and an active control method thereof. Background technique [0002] Bearingless motors integrate magnetic bearings into the motor module, and rely on electromagnetic force to achieve stable suspension of the motor rotor without mechanical bearings for support. Therefore, the bearingless motor does not have the problems of large friction loss at high speed of the rotor, serious heat generation, limited life, etc., and solves the problems of difficult selection of mechanical bearing lubricating oil in aerospace and other high vacuum fields, because there is no leakage of mechanical bearing lubricating oil , Metal debris pollution, very suitable for high cleanliness areas. [0003] In addition to the rotational speed of the motor rotor, which is the degree of freedom around the rotation axis,...

Claims

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Application Information

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IPC IPC(8): H02K16/04H02K21/24H02K1/27H02K3/04H02K11/21H02P6/28H02P6/32
CPCH02K16/04H02K21/24H02K1/2793H02K3/04H02K11/21H02P6/28H02P6/32
Inventor 裴同豪李大伟刘嘉韵孔武斌曲荣海孙剑波
Owner HUAZHONG UNIV OF SCI & TECH
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