CN110661348A - 65000-rotation permanent magnet magnetic suspension high-speed motor system - Google Patents

65000-rotation permanent magnet magnetic suspension high-speed motor system Download PDF

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Publication number
CN110661348A
CN110661348A CN201810689865.1A CN201810689865A CN110661348A CN 110661348 A CN110661348 A CN 110661348A CN 201810689865 A CN201810689865 A CN 201810689865A CN 110661348 A CN110661348 A CN 110661348A
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CN
China
Prior art keywords
magnetic suspension
suspension bearing
rotor
radial
axial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810689865.1A
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Chinese (zh)
Inventor
陈立
李韶澜
王荣众
赵建辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Dibao Intelligent Technology Co Ltd
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Zhejiang Dibao Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Zhejiang Dibao Intelligent Technology Co Ltd filed Critical Zhejiang Dibao Intelligent Technology Co Ltd
Priority to CN201810689865.1A priority Critical patent/CN110661348A/en
Publication of CN110661348A publication Critical patent/CN110661348A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/165—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

The invention discloses a 65000-revolution permanent magnet magnetic suspension high-speed motor system, which belongs to the field of motors and comprises a stator, a rotor, two radial magnetic suspension bearings and an axial magnetic suspension bearing, wherein the stator is provided with a winding, and the rotor is a permanent magnet rotor; the two radial magnetic suspension bearings are respectively sleeved on two sides of the rotor, the rotor is installed in the stator through the radial magnetic suspension bearings, and the radial magnetic suspension bearings are used for adjusting the radial position of the rotor; the axial magnetic suspension bearing is arranged on the stator at the end part of the rotor and used for adjusting the axial position of the rotor; the radial magnetic suspension bearing and the axial magnetic suspension bearing are both permanent magnet bearings. The invention not only can adjust the displacement of the rotor in real time, but also has the functions of long service life and convenient maintenance.

Description

65000-rotation permanent magnet magnetic suspension high-speed motor system
Technical Field
The invention relates to the field of motors, in particular to a 65000-rotation permanent magnet magnetic suspension high-speed motor system.
Background
In the prior art, the rotor of the motor rotates at a high speed, the rotating speed of a bearing arranged on the rotor is increased, so that the abrasion of the bearing is increased, the service life of the bearing is reduced, and the maintenance frequency of the motor is improved; however, in the industry, the application of high-speed motors is getting bigger and bigger, and magnetic levitation motors are in use, but the existing magnetic levitation motors simply use the principle of excitation magnetic levitation to make the motor rotor in a levitation state, and the magnetic levitation motors have the problems of low control efficiency, easy interference, large volume and inconvenient installation, and are difficult to operate in a super-high speed (more than 100000 r).
Disclosure of Invention
Aiming at the problems of low control efficiency, easy interference, large volume and inconvenient installation of a magnetic suspension motor in the prior art, the invention aims to provide a 65000-turn permanent magnet magnetic suspension high-speed motor system.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a65000-revolution permanent magnet magnetic suspension high-speed motor system comprises a stator, a rotor, two radial magnetic suspension bearings and an axial magnetic suspension bearing, wherein a winding is arranged on the stator, and the rotor is a permanent magnet rotor; the two radial magnetic suspension bearings are respectively sleeved on two sides of the rotor, the rotor is installed in the stator through the radial magnetic suspension bearings, and the radial magnetic suspension bearings are used for adjusting the radial position of the rotor; the axial magnetic suspension bearing is arranged on the stator at the end part of the rotor and used for adjusting the axial position of the rotor; the radial magnetic suspension bearing and the axial magnetic suspension bearing are both permanent magnet bearings.
The magnetic suspension bearing controller is electrically connected with the radial magnetic suspension bearing, the axial magnetic suspension bearing, the position signal sensor and the power amplifier; the position signal sensor is used for detecting the radial and axial positions of the rotor and sending position change signals of the rotor to the magnetic suspension bearing controller, the magnetic suspension bearing controller is used for controlling the radial magnetic suspension bearing and the axial magnetic suspension bearing, the power amplifier is used for converting control signals sent by the magnetic suspension bearing controller into control currents, and the radial magnetic suspension bearing and the axial magnetic suspension bearing are used for driving the position of the rotor to change under the action of the control currents.
Preferably, the radial magnetic suspension bearing and the axial magnetic suspension bearing are both provided with the position signal sensor.
Preferably, two position signal sensors are mounted on the radial magnetic suspension bearing, and one position signal sensor is mounted on the axial magnetic suspension bearing.
The magnetic suspension bearing controller is characterized by further comprising a position sensor control board, wherein the position sensor control board is electrically connected with the position signal sensor and the magnetic suspension bearing controller, and the position sensor control board is used for converting position signals detected by the position signal sensor into voltage signals.
Preferably, the magnetic bearing controller comprises a core control board and five shaft power board outputs.
A control method of a 65000-rotor permanent magnet magnetic suspension high-speed motor system comprises the following steps:
step 1, after receiving a CAN communication signal of an upper computer, a magnetic suspension bearing controller outputs current to a radial magnetic suspension bearing to enable a rotor inside the radial magnetic suspension bearing to be in a suspension state under the action of a magnetic field;
step 2, position signal sensors arranged on the radial magnetic suspension bearing and the axial magnetic suspension bearing measure the radial and axial positions of the rotor in real time, and the position signals are converted into voltage signals through a position sensor control board and sent to a magnetic suspension bearing controller;
step 3, judging whether the real-time radial and axial positions of the rotor need to be adjusted or not by the magnetic suspension bearing controller according to the normal working position of the rotor recorded in advance, and calculating and generating a control signal by the magnetic suspension bearing controller if the real-time radial and axial positions need to be adjusted;
and 4, converting the control signal into a control current by a power amplifier, generating a variable magnetic field by the radial magnetic suspension bearing or the axial magnetic suspension bearing to be adjusted under the action of the control current, and returning the rotor to a normal working position in the variable magnetic field.
By adopting the technical scheme, because the radial magnetic suspension bearing and the axial magnetic suspension bearing are both permanent magnetic suspension bearings, the power loss is reduced and the efficiency is improved because no exciting magnetic field current exists; the fixed magnetic field is little interfered by the outside and the operation is stable. The magnetic suspension high-speed motor has small volume, light weight and convenient installation, and can operate in the ultra-high speed field (more than 100000 turns).
Drawings
FIG. 1 is a cross-sectional view of a 65000-turn permanent magnet magnetic levitation high-speed motor of the present invention;
FIG. 2 is a schematic structural diagram of a radial magnetic suspension bearing according to the present invention;
FIG. 3 is a schematic structural diagram of an axial magnetic suspension bearing according to the present invention;
fig. 4 is a block diagram of the present invention.
In the figure, a stator 1, a rotor 2, a radial magnetic suspension bearing 3, an axial magnetic suspension bearing 4, a position signal sensor 5, a magnetic suspension bearing controller 6, a power amplifier 7 and a position sensor control board 8 are arranged.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-3, a 65000-turn permanent magnet magnetic suspension high-speed motor system comprises a stator 1, a rotor 2, two radial magnetic suspension bearings 3 and an axial magnetic suspension bearing 4, wherein the stator 1 is provided with a winding, and the rotor 2 is a permanent magnet rotor; the two radial magnetic suspension bearings 3 are respectively sleeved on two sides of the rotor 2, the rotor 2 is installed in the stator 1 through the radial magnetic suspension bearings 3, and the radial magnetic suspension bearings 3 are used for supporting the rotor 1 and adjusting the radial position of the rotor 1; the axial magnetic suspension bearings 4 are respectively arranged on the stator 1 at one end of the rotor 2, and the axial magnetic suspension bearings 4 are used for adjusting the axial position of the rotor 2; the radial magnetic suspension bearing 3 and the axial magnetic suspension bearing 4 are both permanent magnetic bearings;
as shown in fig. 4, the present invention further includes a position signal sensor 5, a magnetic suspension bearing controller 6, and a power amplifier 7, wherein the magnetic suspension bearing controller 6 is electrically connected to the radial magnetic suspension bearing 3, the axial magnetic suspension bearing 4, the position signal sensor 5, and the power amplifier 7; the position signal sensor 5 is used for detecting the radial and axial positions of the rotor 2 and sending position change signals of the rotor 2 to the magnetic suspension bearing controller 6, the magnetic suspension bearing controller 6 is used for controlling the radial magnetic suspension bearing 3 and the axial magnetic suspension bearing 4, the power amplifier 7 is used for converting control signals sent by the magnetic suspension bearing controller 6 into control currents, and the radial magnetic suspension bearing 3 and the axial magnetic suspension bearing 4 are used for driving the position of the rotor 2 to tend to a normal working position under the action of the control currents;
in order to more accurately measure the displacement of the rotor 2, 5 position signal sensors 5 are arranged, two position signal sensors 5 are arranged on each radial magnetic suspension bearing 3, and one position signal sensor 5 is arranged on each axial magnetic suspension bearing 4; the magnetic suspension bearing control system is characterized by further comprising a position sensor control board 8, wherein the position sensor control board 8 is electrically connected with the position signal sensor 5 and the magnetic suspension bearing controller 6, and the position sensor control board 8 is used for converting a position signal detected by the position signal sensor 5 into a voltage signal; the magnetic bearing controller 6 includes a core control board and five shaft power board outputs.
The invention also discloses a control method applied to the 65000-rotor permanent magnet magnetic suspension high-speed motor system, which comprises the following steps:
step 1, after a magnetic suspension bearing controller 6 is connected to an upper computer CAN communication signal and electrified, outputting current to a radial magnetic suspension bearing 3 to enable a rotor 2 in the radial magnetic suspension bearing to be in a suspension state under the action of a magnetic field;
step 2, position signal sensors 5 arranged on the radial magnetic suspension bearing 3 and the axial magnetic suspension bearing 4 measure the radial and axial positions of the rotor 2 in real time, and the position signals are converted into voltage signals through a position sensor control board 8 and sent to a magnetic suspension bearing controller 6;
step 3, the magnetic suspension bearing controller 6 judges whether the real-time radial and axial positions of the rotor 2 need to be adjusted according to the normal working position of the rotor 2 recorded in advance, and if the real-time radial and axial positions need to be adjusted, the magnetic suspension bearing controller 6 calculates and generates a control signal;
and 4, converting the control signal into a control current by the power amplifier 7, generating a variable magnetic field by the radial magnetic suspension bearing 3 or the axial magnetic suspension bearing 4 to be regulated under the action of the control current, and returning the rotor 2 to a normal working position in the variable magnetic field.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims (7)

1. A65000-rotation permanent magnet magnetic suspension high-speed motor system is characterized in that: the permanent magnet motor comprises a stator, a rotor, two radial magnetic suspension bearings and an axial magnetic suspension bearing, wherein a winding is arranged on the stator, and the rotor is a permanent magnet rotor; the two radial magnetic suspension bearings are respectively sleeved on two sides of the rotor, the rotor is installed in the stator through the radial magnetic suspension bearings, and the radial magnetic suspension bearings are used for adjusting the radial position of the rotor; the axial magnetic suspension bearing is arranged on the stator at the end part of the rotor and used for adjusting the axial position of the rotor; the radial magnetic suspension bearing and the axial magnetic suspension bearing are both permanent magnet bearings.
2. The 65000-turn permanent magnet magnetic levitation high-speed motor system as claimed in claim 1, wherein: the magnetic suspension bearing controller is electrically connected with the radial magnetic suspension bearing, the axial magnetic suspension bearing, the position signal sensor and the power amplifier; the position signal sensor is used for detecting the radial and axial positions of the rotor and sending position change signals of the rotor to the magnetic suspension bearing controller, the magnetic suspension bearing controller is used for controlling the radial magnetic suspension bearing and the axial magnetic suspension bearing, the power amplifier is used for converting control signals sent by the magnetic suspension bearing controller into control currents, and the radial magnetic suspension bearing and the axial magnetic suspension bearing are used for driving the position of the rotor to change under the action of the control currents.
3. The 65000-turn permanent magnet magnetic levitation high-speed motor system as claimed in claim 2, wherein: and the radial magnetic suspension bearing and the axial magnetic suspension bearing are both provided with the position signal sensors.
4. The 65000-turn permanent magnet magnetic levitation high-speed motor system as claimed in claim 2, wherein: two position signal sensors are installed on the radial magnetic suspension bearing, and one position signal sensor is installed on the axial magnetic suspension bearing.
5. The 65000-turn permanent magnet magnetic levitation high-speed motor system as claimed in claim 2, wherein: the magnetic suspension bearing control system is characterized by further comprising a position sensor control board, wherein the position sensor control board is electrically connected with the position signal sensor and the magnetic suspension bearing controller, and the position sensor control board is used for converting position signals detected by the position signal sensor into voltage signals.
6. The 65000-turn permanent magnet magnetic levitation high-speed motor system as claimed in claim 2, wherein: the magnetic suspension bearing controller comprises a core control board and five shaft power board outputs.
7. A method of controlling a 65000 rpm permanent magnet magnetic levitation high speed motor system as claimed in any one of claims 1-6, wherein: the method comprises the following steps:
step 1, after receiving a CAN communication signal of an upper computer, a magnetic suspension bearing controller outputs current to a radial magnetic suspension bearing to enable a rotor inside the radial magnetic suspension bearing to be in a suspension state under the action of a magnetic field;
step 2, position signal sensors arranged on the radial magnetic suspension bearing and the axial magnetic suspension bearing measure the radial and axial positions of the rotor in real time, and the position signals are converted into voltage signals through a position sensor control board and sent to a magnetic suspension bearing controller;
step 3, judging whether the real-time radial and axial positions of the rotor need to be adjusted or not by the magnetic suspension bearing controller according to the normal working position of the rotor recorded in advance, and calculating and generating a control signal by the magnetic suspension bearing controller if the real-time radial and axial positions need to be adjusted;
and 4, converting the control signal into a control current by a power amplifier, generating a variable magnetic field by the radial magnetic suspension bearing or the axial magnetic suspension bearing to be adjusted under the action of the control current, and returning the rotor to a normal working position in the variable magnetic field.
CN201810689865.1A 2018-06-28 2018-06-28 65000-rotation permanent magnet magnetic suspension high-speed motor system Withdrawn CN110661348A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810689865.1A CN110661348A (en) 2018-06-28 2018-06-28 65000-rotation permanent magnet magnetic suspension high-speed motor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810689865.1A CN110661348A (en) 2018-06-28 2018-06-28 65000-rotation permanent magnet magnetic suspension high-speed motor system

Publications (1)

Publication Number Publication Date
CN110661348A true CN110661348A (en) 2020-01-07

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Application Number Title Priority Date Filing Date
CN201810689865.1A Withdrawn CN110661348A (en) 2018-06-28 2018-06-28 65000-rotation permanent magnet magnetic suspension high-speed motor system

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1852004A (en) * 2006-04-30 2006-10-25 南京航空航天大学 High-speed motor system having multiple redundance functions
CN101054997A (en) * 2007-04-26 2007-10-17 北京航空航天大学 Permanent-magnetic biased axial magnetic bearing
CN201956944U (en) * 2010-10-15 2011-08-31 浙江工业大学 Vertical magnetic levitation flywheel battery utilizing flywheel
CN103607067A (en) * 2013-10-30 2014-02-26 南京邮电大学 Magnetic-suspension flywheel energy-storage cell used for electric automobile
CN103929010A (en) * 2014-03-25 2014-07-16 中国人民解放军海军工程大学 Vertical type hybrid magnetic suspension flywheel energy storage system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1852004A (en) * 2006-04-30 2006-10-25 南京航空航天大学 High-speed motor system having multiple redundance functions
CN101054997A (en) * 2007-04-26 2007-10-17 北京航空航天大学 Permanent-magnetic biased axial magnetic bearing
CN201956944U (en) * 2010-10-15 2011-08-31 浙江工业大学 Vertical magnetic levitation flywheel battery utilizing flywheel
CN103607067A (en) * 2013-10-30 2014-02-26 南京邮电大学 Magnetic-suspension flywheel energy-storage cell used for electric automobile
CN103929010A (en) * 2014-03-25 2014-07-16 中国人民解放军海军工程大学 Vertical type hybrid magnetic suspension flywheel energy storage system

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Application publication date: 20200107

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