CN117006158A - Series winding controller applied to five-axis magnetic suspension bearing and control method - Google Patents

Series winding controller applied to five-axis magnetic suspension bearing and control method Download PDF

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Publication number
CN117006158A
CN117006158A CN202311076291.8A CN202311076291A CN117006158A CN 117006158 A CN117006158 A CN 117006158A CN 202311076291 A CN202311076291 A CN 202311076291A CN 117006158 A CN117006158 A CN 117006158A
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CN
China
Prior art keywords
winding
controllable switch
bridge arm
freedom
magnetic suspension
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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.)
Pending
Application number
CN202311076291.8A
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Chinese (zh)
Inventor
丁建夫
蒋栋
刘自程
李闻一
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Hubei Shunyi Technology Co ltd
Huazhong University of Science and Technology
Original Assignee
Hubei Shunyi Technology Co ltd
Huazhong University of Science and Technology
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Application filed by Hubei Shunyi Technology Co ltd, Huazhong University of Science and Technology filed Critical Hubei Shunyi Technology Co ltd
Priority to CN202311076291.8A priority Critical patent/CN117006158A/en
Publication of CN117006158A publication Critical patent/CN117006158A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0459—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0474—Active magnetic bearings for rotary movement
    • F16C32/0489—Active magnetic bearings for rotary movement with active support of five degrees of freedom, e.g. two radial magnetic bearings combined with an axial bearing

Abstract

The invention discloses a serial winding controller and a serial winding method applied to a hybrid five-axis magnetic suspension bearing, belonging to the field of magnetic suspension bearing control, and comprising 12 controllable switches, 10 windings and a power supply. The invention controls the current passing through each winding by changing the conduction time of each controllable switch in one switching period, and divides 10 winding groups into five groups by using the parallel connection mode of two windings with the same degree of freedom, thereby realizing the control of the current of 10 windings for controlling five degrees of freedom in the magnetic suspension bearing. The five-degree-of-freedom winding serial connection mode only needs six bridge arms to control, only needs two bridge arms to control a single coil in a common bridge circuit, and the utilization rate of the device is effectively improved.

Description

Series winding controller applied to five-axis magnetic suspension bearing and control method
Technical Field
The invention belongs to the field of magnetic bearing control, and particularly relates to a series winding controller and a control method applied to a five-axis magnetic bearing.
Background
The suspension bearing is a bearing device for suspending the rotor by utilizing electromagnetic force, thereby replacing the traditional mechanical bearing and realizing the non-contact operation of the rotor and the stator. The rotor and the stator have no mechanical contact, so that the rotor and the stator have the characteristics of no need of lubrication, no mechanical friction, no pollution, good stability, long service life and the like. In the fields of energy storage flywheel, aviation equipment and the like, the rotor needs to rotate at high speed and ultra-high speed or has high requirements on working environment, and the magnetic suspension bearing has very wide application. In the 40 s of the last century, the magnetic bearing has been studied intensively by students abroad, and in the 70 s of the last century, the magnetic bearing has entered the industrial application stage. The development of the aviation technology field greatly promotes the development of the magnetic suspension bearing, and therefore, a plurality of magnetic suspension devices with cross-age significance are generated. The development of the related fields in China is late, a plurality of universities and enterprises are very concerned about the latest research progress in the field of magnetic suspension bearings in recent years, related products are also started to appear in the existing enterprises, and the magnetic suspension bearings have wide development prospects in the coming decades.
The magnetic suspension bearing system mainly comprises a rotor, a sensor, a controller, an electromagnetic actuator and the like, and the design of the control system has great influence on the performance of the whole device. The power amplifier converts the control signal into current in the windings to control the electromagnetic force of the magnetic bearing, which is an important component in the magnetic bearing system.
The types of magnetic suspension bearings at present are mainly divided into active magnetic suspension bearings, passive magnetic suspension bearings and hybrid magnetic suspension bearings. The hybrid magnetic bearing is widely applied to a magnetic bearing system due to the outstanding characteristic of small loss volume. The main representative of the hybrid magnetic suspension bearing is that the magnetic suspension bearing with permanent magnet bias is mixed with an electromagnetic bearing, or is composed of a common mode bias coil providing common mode electromagnetic force and a coil providing differential mode electromagnetic force. For the control method of the winding current, the traditional full-bridge topological structure needs two bridge arms to control one winding, so that the system structure becomes complex in the magnetic suspension bearing system, and the device cost is increased. CN111894979B discloses a multi-leg switching power amplifier, which connects all windings to the same leg, increases the current stress of the leg, and reduces the safety by requiring additional fault tolerant design. Therefore, the cost of the device is reduced, but the current stress of the common bridge arm is larger, the current stress of the device is unevenly distributed, and the risk of faults is higher.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a series winding controller applied to a hybrid magnetic bearing and a control method thereof, and aims to solve the problems that the number of devices of the existing hybrid magnetic bearing system is large and the current stress of a common bridge arm of a five-phase six-bridge arm controller is large.
To achieve the above object, the present invention provides a series winding controller applied to a hybrid magnetic bearing, comprising: first controllable switch S 1 Second controllable switch S 2 Third controllable switch S 3 Fourth controllable switch S 4 Fifth controllable switch S 5 Sixth controllable switch S 6 Seventh controllable switch S 7 Eighth controllable switch S 8 Ninth controllable switch S 9 Tenth controllable switch S 10 Eleventh controllable switch S 11 Twelfth controllable switch S 12 First winding A 1 Second winding A 2 Third winding A 3 Fourth winding A 4 Fifth winding A 5 Sixth winding A 6 Seventh winding A 7 Eighth winding A 8 Ninth winding A 9 Tenth first winding A 10 And a power source; the hybrid magnetic bearing is a five-axis magnetic bearing, and the five-axis magnetic bearing has five degrees of freedom;
wherein the first controllable switch S 1 And a second S 2 The first bridge arm formed by reverse parallel connection is connected with the positive electrode and the negative electrode of the power supply; third controllable switch S 3 And a fourth controllable switch S 4 The second bridge arm is connected with the positive electrode and the negative electrode of the power supply in an inverse parallel manner; fifth controllable switch S 5 And a sixth controllable switch S 6 A third bridge arm formed by reverse parallel connection is connected with the positive electrode and the negative electrode of the power supply; seventh controllable switch S 7 And an eighth controllable switch S 8 A fourth bridge arm formed by inverse parallel connection is connected with the anode and the cathode of the power supply; ninth controllable switch S 9 And a tenth controllable switch S 10 A fifth bridge arm formed by reverse parallel connection is connected with the positive electrode and the negative electrode of the power supply; eleventh controllable switch S 11 And a twelfth controllable switch S 12 A sixth bridge arm formed by inverse parallel connection is connected with the anode and the cathode of the power supply; first winding A 1 And a second winding A 2 The first degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the first bridge arm and the second bridge arm; third winding A 3 And the fourth winding A 4 The second degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the second bridge arm and the third bridge arm; fifth winding A 5 And a sixth winding A 6 The third degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the third bridge arm and the fourth bridge arm; seventh winding A 7 And an eighth winding A 8 The fourth degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the third bridge arm and the fourth bridge arm; ninth winding A 9 And the tenth winding A 10 The fifth degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the fourth bridge arm and the fifth bridge arm; the controllable switch S 1 -S 12 For controlling the current i through all windings 1 、i 2 、i 3 、i 4 、i 5 Is of a size of (2);
wherein the first winding A 1 Second winding A 2 The sum of the currents of (a) corresponds to the first winding current i 1 Third winding A 3 Fourth winding A 4 The sum of the currents of (2) corresponds to the second winding current i 2 Fifth winding A 5 Sixth winding A 6 The sum of the currents of (a) corresponds to the third winding current i 3 Seventh winding A 7 Eighth winding A 8 Sum of the currents of (2) and (i) the fourth winding current 4 Ninth winding A 9 Tenth winding A 10 Corresponds to the sum of the currents of the fifth winding current i 5 The first to fifth winding currents i 1 、i 2 、i 3 、i 4 、i 5 For producing magnetically levitated bearing rotorsThe differential electromagnetic force required for levitation.
According to one embodiment of the invention, the controllable switch S 1 -S 12 All are insulated gate bipolar transistors.
According to one embodiment of the invention, the five degrees of freedom are four degrees of freedom in the radial direction of the five-axis magnetic bearing rotor and one degree of freedom in the axial direction of the five-axis magnetic bearing rotor.
On the other hand, the invention also provides a control method based on the series winding controller, which comprises the following steps:
(1) By synchronously controlling the controllable switch S 1 -S 12 Is switched on and off, and the working mode of the controller is switched;
(2) By controlling the controllable switch S 1 -S 12 The on time of each working mode of the series winding controller is controlled, and the current of each winding is controlled.
Preferably, the step (2) includes:
(2.1) controlling the duration of each mode of operation of the controller by controlling the on time of each controllable switch;
(2.2) acquiring voltages on adjacent winding nodes according to the duration of each working mode of the series winding controller;
(2.3) calculating the current of each winding according to the voltages on the adjacent winding nodes;
and (2.4) controlling the electromagnetic force in the direction of the degree of each magnetic suspension bearing by changing the magnitude of the current in the winding, so as to suspend the rotor of the magnetic suspension bearing.
Preferably, the controllable switch S 1 -S 12 The on-time is controlled by varying its gate control signal.
Preferably, the controllable switch S 1 -S 12 The gate control signals of the gate control circuit are pulse modulation signals with adjustable duty ratio.
In general, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
(1) Compared with the traditional hybrid magnetic suspension controller, each winding needs two bridge arms to be controlled simultaneously, 10 windings used in the hybrid magnetic suspension controller are connected in series, and only 6 bridge arms are needed to control the 10 windings, and the current of each winding is controlled by controllable switches on two adjacent bridge arms, so that the utilization rate of devices is greatly improved, and the cost and the volume of the controller are reduced.
(2) The control method does not use a method that one end of all windings is connected to a common bridge arm, but adopts a series winding mode, and compared with a five-phase six-bridge arm topological structure, the control method uniformly distributes the current stress of the power device and improves the reliability of the controller.
Drawings
Fig. 1 is a control structure diagram of a five-axis magnetic suspension bearing provided by the invention.
Fig. 2 is a topology of a series winding provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
FIG. 1 is a diagram showing a five-axis magnetic bearing control structure, each degree of freedom including two windings, the two windings being controlled in anti-parallel, the two windings generating differential electromagnetic force F of the magnetic bearing y The biasing electromagnetic force is provided by a biasing coil or permanent magnet structure. The magnetic suspension bearing is controlled by adopting double-ring control, wherein the outer ring is a position ring, the relative position signal of the rotor fed back by the position sensor is compared with a given position, and the excitation current command signal of the inner ring winding provided by the controller is finally tracked rapidly by the current ring, so that the effective control of electromagnetic force is realized.
The following is a specific example 1:
as shown in fig. 2, the present embodiment provides a series winding controller applied to a magnetic bearing, the hybrid magnetic bearing is a five-axis magnetic bearing having five degrees of freedom including four degrees of freedom in a rotor radial direction of the magnetic bearing and one degree of freedom in a rotor axial direction of the bearing.
The series winding controller includes: 12 controllable switches S 1 -S 12 10 windings A 1 -A 10 And 1 direct current voltage source; first and second controllable switches S 1 And S is equal to 2 The first bridge arm formed by series connection is connected with the positive electrode and the negative electrode of the power supply; third and fourth controllable switches S 3 And S is equal to 4 The second bridge arm is connected with the positive electrode and the negative electrode of the power supply in an inverse parallel manner; fifth and sixth controllable switch S 5 And S is equal to 6 A third bridge arm formed by reverse parallel connection is connected with the positive electrode and the negative electrode of the power supply; seventh eighth controllable switch S 7 And S is equal to 8 A fourth bridge arm formed by inverse parallel connection is connected with the anode and the cathode of the power supply; ninth tenth controllable switch S 9 And S is equal to 10 A fifth bridge arm formed by reverse parallel connection is connected with the positive electrode and the negative electrode of the power supply; eleventh twelfth controllable switch S 11 And S is equal to 12 A sixth bridge arm formed by inverse parallel connection is connected with the anode and the cathode of the power supply; first and second windings A 1 And A is a 2 The first degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the first bridge arm and the second bridge arm; third and fourth windings A 3 And A is a 4 The second degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the second bridge arm and the third bridge arm; fifth and sixth windings A 5 And A is a 6 The third degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the third bridge arm and the fourth bridge arm; seventh eighth winding A 7 And A is a 8 The fourth degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the third bridge arm and the fourth bridge arm; ninth tenth winding A 9 And A is a 10 The fifth degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the fourth bridge arm and the fifth bridge arm; all controllable switches are used for controlling the first to fifth winding currents i 1 、i 2 、i 3 、i 4 、i 5 Is of a size of (2); first toThe tenth winding generates electromagnetic force required by the magnetic suspension bearing through corresponding winding current.
Controllable switch S 1 -S 12 All are insulated gate bipolar transistors, and the on-time and the gate control signals are pulse modulation signals with adjustable duty ratio by changing the gate control signals.
The specific control method of this embodiment is as follows:
(1) The working modes of the controller are switched by synchronously controlling the on and off of each controllable switch;
(2) The duration of each working mode of the controller is controlled by controlling the on time of each controllable switch, so that the control of each winding current is realized.
Wherein, step (2) specifically includes:
(2.1) controlling the duration of each mode of operation of the controller by controlling the on time of each controllable switch;
(2.2) acquiring voltages on adjacent winding nodes according to the duration of each working mode of the controller;
(2.3) calculating the current of each winding according to the voltages on the adjacent winding nodes;
and (2.4) controlling the electromagnetic force in the direction of the degree of each magnetic suspension bearing by changing the magnitude of the current in the winding, so as to suspend the rotor of the magnetic suspension bearing.
In (2.4), a first and a second controllable switch S are defined 1 And S is 2 The average voltage at the midpoint of the bridge arm is u 1 Third and fourth controllable switches S 3 And S is 4 The average voltage at the midpoint of the bridge arm is u 2 Fifth and sixth controllable switches S 5 And S is 6 The average voltage at the midpoint of the bridge arm is u 3 Seventh eighth controllable switch S 7 And S is 8 The average voltage at the midpoint of the bridge arm is u 4 Ninth and tenth controllable switch S 9 And S is 10 The average voltage at the midpoint of the bridge arm is u 5 Eleventh twelfth controllable switch S 11 And S is 12 The average voltage at the midpoint of the bridge arm is u 6 . By controlling insulated gate bipolar electrodesTransistor S 1 -S 12 The duty cycle of the pulse width modulated signal of the gate control signal of (2) can be determined for the average voltage u at the node 1 、u 2 、u 3 、u 4 、u 5 And u 6 Performing control;
definition of first to tenth windings A 1 、A 2 、A 3 、A 4 、A 5 、A 6 、A 7 、A 8 、A 9 、A 10 The impedance of (a) is Z L ；
First and second windings A 1 、A 2 The current flowing through the capacitor is i 1 ；
Third and fourth windings A 3 、A 4 The current flowing through the capacitor is i 2 ；
Fifth and sixth windings A 5 、A 6 The current flowing through the capacitor is i 3 ；
Seventh eighth winding A 7 、A 8 The current flowing through the capacitor is i 4 ；
Ninth tenth winding A 9 、A 10 The current flowing through the capacitor is i 5 ；
Winding A 1 、A 2 、A 3 、A 4 、A 5 、A 6 、A 7 、A 8 、A 9 、A 10 The current magnitude in (2) can be expressed as:
the first and second windings a in this embodiment 1 、A 2 A group of the third and fourth windings A for controlling the first degree of freedom 3 、A 4 A group of fifth and sixth windings A for controlling the second degree of freedom 5 、A 6 A group of seventh and eighth windings A for controlling the third degree of freedom 7 、A 8 A group of windings A for controlling the fourth degree of freedom and the ninth and tenth windings 9 、A 10 One group of five-axis magnetic suspension bearings are controlled to control the fifth degree of freedom by setting the current of each windingAnd (5) suspension control.
In the embodiment, only the windings of the magnetic suspension bearing providing the differential electromagnetic force are controlled, each group of windings controls the differential electromagnetic force on one degree of freedom of the magnetic suspension bearing, the control requirement of the magnetic suspension bearing is met, various differential current changes required in the magnetic suspension bearing control can be realized through the control method, the expected control effect is achieved, the control of 10 winding currents can be realized by using 12 controllable switches, the device utilization rate is improved, and the cost of a controller is saved. And simultaneously, the current stress of each bridge arm is uniformly distributed.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (7)

1. A tandem winding controller for a hybrid magnetic bearing, comprising: first controllable switch S 1 Second controllable switch S 2 Third controllable switch S 3 Fourth controllable switch S 4 Fifth controllable switch S 5 Sixth controllable switch S 6 Seventh controllable switch S 7 Eighth controllable switch S 8 Ninth controllable switch S 9 Tenth controllable switch S 10 Eleventh controllable switch S 11 Twelfth controllable switch S 12 First winding A 1 Second winding A 2 Third winding A 3 Fourth winding A 4 Fifth winding A 5 Sixth winding A 6 Seventh winding A 7 Eighth winding A 8 Ninth winding A 9 Tenth first winding A 10 And a power source; the hybrid magnetic bearing is a five-axis magnetic bearing, and the five-axis magnetic bearing has five degrees of freedom;
wherein the first controllable switch S 1 And a second S 2 The first bridge arm formed by reverse parallel connection is connected with the positive electrode and the negative electrode of the power supply; third controllable switch S 3 And a fourth controllable switch S 4 The second bridge arm is connected with the positive electrode and the negative electrode of the power supply in an inverse parallel manner; fifth controllable switch S 5 And a sixth controllable switch S 6 A third bridge arm formed by reverse parallel connection is connected with the positive electrode and the negative electrode of the power supply; seventh controllable switch S 7 And an eighth controllable switch S 8 A fourth bridge arm formed by inverse parallel connection is connected with the anode and the cathode of the power supply; ninth controllable switch S 9 And a tenth controllable switch S 10 A fifth bridge arm formed by reverse parallel connection is connected with the positive electrode and the negative electrode of the power supply; eleventh controllable switch S 11 And a twelfth controllable switch S 12 A sixth bridge arm formed by inverse parallel connection is connected with the anode and the cathode of the power supply; first winding A 1 And a second winding A 2 The first degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the first bridge arm and the second bridge arm; third winding A 3 And the fourth winding A 4 The second degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the second bridge arm and the third bridge arm; fifth winding A 5 And a sixth winding A 6 The third degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the third bridge arm and the fourth bridge arm; seventh winding A 7 And an eighth winding A 8 The fourth degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the third bridge arm and the fourth bridge arm; ninth winding A 9 And the tenth winding A 10 The fifth degree of freedom of the magnetic suspension bearing is controlled to be connected in anti-parallel between the fourth bridge arm and the fifth bridge arm; the controllable switch S 1 -S 12 For controlling the current i through all windings 1 、i 2 、i 3 、i 4 、i 5 Is of a size of (2);
wherein the first winding A 1 Second winding A 2 The sum of the currents of (a) corresponds to the first winding current i 1 Third winding A 3 Fourth winding A 4 The sum of the currents of (2) corresponds to the second winding current i 2 Fifth winding A 5 Sixth winding A 6 The sum of the currents of (a) corresponds to the third winding current i 3 Seventh winding A 7 Eighth winding A 8 Sum of the currents of (2) and (i) the fourth winding current 4 First, theNine windings A 9 Tenth winding A 10 Corresponds to the sum of the currents of the fifth winding current i 5 The first to fifth winding currents i 1 、i 2 、i 3 、i 4 、i 5 The device is used for generating differential electromagnetic force required by suspension of the magnetic suspension bearing rotor.
2. The series winding controller according to claim 1, wherein the controllable switch S 1 -S 12 All are insulated gate bipolar transistors.
3. The tandem winding controller according to claim 1 or 2, wherein the five degrees of freedom are four degrees of freedom in a radial direction of the five-axis magnetic bearing rotor and one degree of freedom in an axial direction of the five-axis magnetic bearing rotor.
4. A control method based on a series winding controller according to any one of claims 1-3, characterized by comprising the steps of:
(1) By synchronously controlling the controllable switch S 1 -S 12 Is switched on and off, and the working mode of the controller is switched;
(2) By controlling the controllable switch S 1 -S 12 The on time of each working mode of the series winding controller is controlled, and the current of each winding is controlled.
5. The control method according to claim 4, wherein the step (2) includes the steps of:
(2.1) controlling the duration of each mode of operation of the controller by controlling the on time of each controllable switch;
(2.2) acquiring voltages on adjacent winding nodes according to the duration of each working mode of the series winding controller;
(2.3) calculating the current of each winding according to the voltages on the adjacent winding nodes;
and (2.4) controlling the electromagnetic force in the direction of the degree of each magnetic suspension bearing by changing the magnitude of the current in the winding, so as to suspend the rotor of the magnetic suspension bearing.
6. The control method according to claim 4 or 5, characterized in that the controllable switch S 1 -S 12 The on-time is controlled by varying its gate control signal.
7. The control method according to claim 6, wherein the controllable switch S 1 -S 12 The gate control signals of the gate control circuit are pulse modulation signals with adjustable duty ratio.
CN202311076291.8A 2023-08-23 2023-08-23 Series winding controller applied to five-axis magnetic suspension bearing and control method Pending CN117006158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311076291.8A CN117006158A (en) 2023-08-23 2023-08-23 Series winding controller applied to five-axis magnetic suspension bearing and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311076291.8A CN117006158A (en) 2023-08-23 2023-08-23 Series winding controller applied to five-axis magnetic suspension bearing and control method

Publications (1)

Publication Number Publication Date
CN117006158A true CN117006158A (en) 2023-11-07

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ID=88563588

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311076291.8A Pending CN117006158A (en) 2023-08-23 2023-08-23 Series winding controller applied to five-axis magnetic suspension bearing and control method

Country Status (1)

Country Link
CN (1) CN117006158A (en)

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