CN209526671U - Magnetic levitation apparatus - Google Patents
Magnetic levitation apparatus Download PDFInfo
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- CN209526671U CN209526671U CN201920536574.9U CN201920536574U CN209526671U CN 209526671 U CN209526671 U CN 209526671U CN 201920536574 U CN201920536574 U CN 201920536574U CN 209526671 U CN209526671 U CN 209526671U
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- main shaft
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- frequency converter
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Abstract
The embodiment of the present application provides a kind of Magnetic levitation apparatus, it include: frequency converter, magnetic suspension motor and magnetic suspension system, frequency converter is connected to power supply by first end, and frequency converter is connected by the input terminal of second end and magnetic suspension system, and frequency converter is connect by third end with magnetic suspension motor；Frequency converter is used for when power supply disconnects, and the electric energy that electric machine main shaft rotation generates is received by third end, and power to magnetic suspension system by second end, so that magnetic suspension system maintains the electric machine main shaft of magnetic suspension motor to be in suspended state.Effect of the impeller being connect with electric machine main shaft by air drag, electric machine main shaft revolving speed in the case where no external energy supplies is slower and slower, to when the revolving speed of electric machine main shaft drops within safe speed of rotation, magnetic suspension system is just unable to maintain that the suspension of electric machine main shaft gradually, after realizing the revolving speed of electric machine main shaft within the safe speed of rotation, electric machine main shaft is contacted with auxiliary bearing, is accomplished after removing UPS, and electric machine main shaft can normally stop operating when abnormal power-down.
Description
Technical field
This application involves motor fields, in particular to a kind of Magnetic levitation apparatus.
Background technique
In the prior art, when circuit control magnetic suspension air blower is run, electric machine main shaft is controlled by magnetic suspension system and is suspended,
It is powered by frequency converter to motor, control electric machine main shaft rotation.Since electric machine main shaft is suspended state, spindle abrasion is small and revolving speed
Fastly, but in this case, if power supply powers off suddenly, it may appear that electric machine main shaft is fallen under the state of running at high speed, and damages asessory shaft
It holds and impeller, or even the case where damage electric machine main shaft.
The prior art is changed by increasing uninterruptible power supply (Uninterruptible Power System, abbreviation UPS)
Kind above situation, UPS can maintain power supply until magnetic suspension air blower normally stops operating in outside power-off.However, UPS pairs
Environmental requirement is higher, and the battery life of UPS is affected by environment larger, in the case where that can not determine the UPS battery service life, in order to keep away
Exempt to power off bring loss suddenly, can usually replace UPS in advance, cause the waste of resource.
Utility model content
In view of this, being to avoid powering off band suddenly to improve the prior art this application provides a kind of Magnetic levitation apparatus
Come loss and waste of resource deficiency.
To achieve the above object, the application provides the following technical solutions:
A kind of Magnetic levitation apparatus, the Magnetic levitation apparatus include: frequency converter, magnetic suspension motor and magnetic suspension system, institute
It states frequency converter to connect to power supply by first end, the frequency converter is connected by the input terminal of second end and the magnetic suspension system
It connects, the frequency converter is connect by third end with the magnetic suspension motor；The frequency converter is used to pass through institute in power supply conducting
Stating third end drives the electric machine main shaft of the magnetic suspension motor to rotate, and is that magnetic suspension system power supply is used by the second end
Suspended state is in the electric machine main shaft of the maintenance magnetic suspension motor；The frequency converter is also used to pass through when power supply disconnects
The third end receives the electric energy that the electric machine main shaft rotation generates, and is supplied by the second end to the magnetic suspension system
Electricity, so that the magnetic suspension system maintains the electric machine main shaft of the magnetic suspension motor to be in suspended state.
When power supply disconnects, frequency converter can receive the electric energy that electric machine main shaft rotation generates, and the electric energy is supplied magnetic suspension
System, to continue to electric machine main shaft suspension.Effect due to the impeller that is connect with electric machine main shaft by air drag, motor master
Axis revolving speed in the case where no external energy supplies is slower and slower, so that the revolving speed in electric machine main shaft drops within safe speed of rotation
When, safe speed of rotation can be set to 3000rpm, and magnetic suspension system is just unable to maintain that the suspension of electric machine main shaft gradually, realizes electricity
After the revolving speed of owner's axis is within the safe speed of rotation, electric machine main shaft is just contacted with auxiliary bearing, has been accomplished after removing UPS, different
Electric machine main shaft still can normally stop when normal off electricity.
It preferably, further include the first potential device in above-mentioned Magnetic levitation apparatus, first potential device is connected in series
Between the second end of the frequency converter and the input terminal of the magnetic suspension system.
It should be understood that first potential device, which can be used for converting the high-voltage electricity that frequency converter exports to, is input to magnetic suspension
The low tension of system.
By the decompression of the first potential device, so that the voltage of first potential device output is being down to magnetic suspension system just
In normal operating voltage range, the normal operation of magnetic suspension system can satisfy.In addition, since the first potential device is by high voltage drop
Low is low-voltage, meets the running environment of magnetic suspension system, since magnetic suspension system work is in the environment of relatively low pressure, with
High pressure working environment is compared, and can reduce the degree of danger to people, has higher safety.
It should be understood that above-mentioned first potential device is merely exemplary the case where high pressure is become low pressure, the first potential device
Function it is related to the operating voltage of the output voltage of second end and magnetic suspension system.
When the operating voltage of the output voltage of second end and magnetic suspension system is equal, can not have to that first transformation is arranged
Device, or first potential device can be set, which is not adjusted voltage；For example, second end
The input voltage of output voltage and magnetic suspension system is all 200V.
When the output voltage of second end is higher than the input voltage of magnetic suspension system, first potential device is for being depressured；
For example, the output voltage of second end can be 550V, the voltage of magnetic suspension system can be 200V.
When the output voltage of second end is lower than the operating voltage of magnetic suspension system, first potential device is for boosting.
Preferably, in above-mentioned Magnetic levitation apparatus, first potential device is the first D.C. regulated power supply.
First potential device can be the first D.C. regulated power supply, and D.C. regulated power supply is changing input terminal and output end two
While holding voltage, it can be realized the effect of pressure stabilizing, i.e., in the case where the spread of voltage of input terminal, still can be realized defeated
The voltage of outlet is relatively stable.The model of first D.C. regulated power supply can be HONOR100-5-800-200-00.
It preferably, further include display device in above-mentioned Magnetic levitation apparatus, the display device and first transformation fill
The output end connection set.
Display device can show the real-time revolving speed of electric machine main shaft, so that being conducive to user intuitively understands current motor main shaft
Revolving speed, be conducive to artificially coordinate and control.
It preferably, further include the second potential device in above-mentioned Magnetic levitation apparatus, second potential device is connected in series
Between the output end and the display device of first potential device.
Second potential device can convert the high voltage of the output end of the first potential device to and be input to display device
Lower voltage the display device powered using lower voltage relatively due to display device and user can be used,
Further increase the use safe coefficient of user.
Preferably, in above-mentioned Magnetic levitation apparatus, second potential device is the second D.C. regulated power supply.
Second potential device can be the second D.C. regulated power supply, and D.C. regulated power supply is changing input terminal and output end two
While holding voltage, it can be realized the effect of pressure stabilizing, i.e., in the case where the spread of voltage of input terminal, still can be realized defeated
The voltage of outlet is relatively stable.The model of second D.C. regulated power supply can be PRO ECO 240W 10A.
It should be understood that the example of above-mentioned second potential device is only illustrative, above-mentioned second potential device can cooperate aobvious
Showing device uses, and the operating voltage of display device is converted to the voltage for exporting the first potential device.
In one case, in the case where being provided with display device, the function of second potential device and first change
The output voltage of pressure device and the operating voltage of the display device are related.
When the operating voltage of the output voltage of the first potential device and display device is equal, can not have to be arranged this second
Potential device, or second potential device can be set, which is not adjusted voltage；
When the output voltage of the first potential device is higher than the operating voltage of display device, second potential device is for dropping
Pressure, for example, the output voltage of the first potential device can be 200V, the operating voltage of display device can be 24V.When the first change
When the output voltage of pressure device is lower than the operating voltage of display device, second potential device is for boosting.
It should be understood that above-mentioned display device is merely exemplary, which can show that specific voltage parameter etc. is believed
Breath, which can be used for receiving the parameter of user's input, for example, the display device can be touch screen, Ke Yitong
The various parameters for touching screen input are crossed, for example, voltage value etc..Optionally, in practical applications, first stable-pressure device is defeated
Outlet can connect common display screen also to show corresponding parameter, and it can also connect other devices, such as defeated
Enter device (such as keyboard etc.), power failure alarm device (for example, alarm lamp and/or alarm sound) etc., the embodiment of the present application is not
It is limited to this.
Preferably, in above-mentioned Magnetic levitation apparatus, the power supply is AC power source.
Preferably, in above-mentioned Magnetic levitation apparatus, the AC power source is alternating current.
Power supply can be AC power source, be specifically as follows alternating current, and alternating current is the electricity for being different from power generation, be the power grid from country
The electric power resource that the inside is extracted.Make the scope of application of this set Magnetic levitation apparatus wider using alternating current.
Preferably, in above-mentioned Magnetic levitation apparatus, the magnetic suspension motor is magnetic suspension air blower.
Preferably, in above-mentioned Magnetic levitation apparatus, the frequency converter is Ge Nisi FG-BL120HP.
The frequency converter of the model can both power when power supply is connected to magnetic suspension motor, make the motor master of magnetic suspension motor
Axis rotation, and can power to magnetic suspension system, maintain the suspension of electric machine main shaft；When power supply disconnects, which can be connect
The electric energy that electric machine main shaft rotation generates is received, and after electric energy is adjusted, gives magnetic suspension system power supply, so that electric machine main shaft turns
It employs in the suspension for maintaining electric machine main shaft itself, the kinetic energy of the electric machine main shaft preferably utilized.
Detailed description of the invention
Illustrate the technical solutions in the embodiments of the present application or in the prior art in order to clearer, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 shows the structural schematic diagram of Magnetic levitation apparatus in the prior art；
Fig. 2 is the structural schematic diagram of Magnetic levitation apparatus provided by the embodiments of the present application；
Fig. 3 is a kind of structural schematic diagram of specific embodiment of Magnetic levitation apparatus provided by the embodiments of the present application；
Fig. 4 is that a kind of part-structure of the inside of specific embodiment of magnetic suspension motor provided by the embodiments of the present application shows
It is intended to；
Fig. 5 is the structural schematic diagram of electric machine main shaft in Fig. 4；
Fig. 6 is that the input voltage of the first potential device and output voltage are illustrated with the curve of the rotation speed change of electric machine main shaft
Figure；
Fig. 7 is the part-structure of the inside of another specific embodiment of magnetic suspension motor provided by the embodiments of the present application
Schematic diagram.
Icon: Magnetic levitation apparatus 100；Frequency converter 110；Magnetic suspension motor 120；Electric machine main shaft 121；First connecting portion
1211；Second connecting portion 1212；Third interconnecting piece 1213；Shaft end 1214；Middle part 1215；Rotor 122；Motor stator
123；Permanent magnet 124；Shell 125；Magnetic suspension system 130；Electromagnet 131；First potential device 140；Display device 150；The
Two potential devices 160；Power supply 200；Radial direction magnetic bearing 310；Sensor 320；Axial magnetic bearing 330；Electric machine main shaft 340；Motor
Stator 350；Impeller 360；Outlet spiral case 370；Air intake duct 380.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Ground description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is right below
The detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit claimed scope of the present application, but
It is merely representative of the selected embodiment of the application.Based on embodiments herein, those skilled in the art are not making creativeness
Every other embodiment obtained, shall fall in the protection scope of this application under the premise of labour.
Referring to Figure 1, Fig. 1 shows the structural schematic diagram of Magnetic levitation apparatus in the prior art.The input terminal of frequency converter
Connect with 320 power supply of three-phase alternating current, the output end of frequency converter respectively with the three-phase terminal of three-phase magnetic suspension motor (end U, the end V,
The end W) connection.Wherein, three-phase alternating-current supply is that frequency is identical, amplitude is equal by three, phase successively 120 ° of mutual deviation of alternating current
The power supply of gesture composition, i.e. L1, L2, L3 are that frequency is identical, amplitude is equal, phase successively 120 ° of mutual deviation of exchange potential.The three-phase
AC power source is 380V, the alternating current of 50Hz.
The wherein two-phase (L1 and L2) of three-phase alternating-current supply is connected by the input terminal of transformer and UPS.The output end of UPS
It is connect through D.C. regulated power supply 1 with magnetic suspension system, the output end of UPS is also connect through D.C. regulated power supply 2 with touch screen.
Frequency converter is used to adjust the revolving speed of three-phase magnetic suspension motor, and magnetic suspension system is for maintaining three-phase magnetic suspension motor
Electric machine main shaft is in suspended state, and touch screen is used to show the device parameter of Magnetic levitation apparatus, such as motor speed, frequency converter temperature
Degree, motor temperature etc..UPS is used for when alternating current is normal, will be supplied to load after alternating current pressure stabilizing, while the battery into UPS
Charging；In commercial power interruption, UPS by the direct current energy of battery, is continued immediately by the square normal load of inverter switching conversion
Supply 220V alternating current.The direct current that D.C. regulated power supply 1 is used to the 220V alternating current of the output end of UPS being converted to 200V is defeated
Enter to magnetic suspension system.D.C. regulated power supply 2 is used to the 220V alternating current of the output end of UPS being converted to 24V DC supply input
To touch screen.Transformer is used to for the alternating current of 380V to be depressured the alternating current for 220V.The model PRO of D.C. regulated power supply 1
ECO 120W 5A, the model PRO ECO 240W 10A of D.C. regulated power supply 2.
Therefore, in the prior art, the motor master of three-phase magnetic suspension motor when can avoid alternating current abnormal interrupt by UPS
The generation for the case where axis is fallen under the state of running at high speed, so as to protect the auxiliary bearing, impeller and electricity of magnetic suspension motor
Owner's axis.
However, UPS is higher to environmental requirement, it is typically only capable to work normally at 0-40 DEG C, the battery life of UPS is by environment shadow
Sound is larger,, usually can in advance more in order to avoid powering off bring loss suddenly in the case where that can not determine the UPS battery service life
UPS is changed, the waste of resource is caused.
Drawbacks described above existing in the prior art, applicants contemplate that being applicant after practicing and carefully studying
It is obtaining as a result, therefore, what the discovery procedure of the above problem and hereinafter the embodiment of the present application were proposed regarding to the issue above
Solution all should be the contribution that applicant makes the application during the application.
In order to solve the above technical problems, the embodiment of the present application provides following Magnetic levitation apparatus, below in conjunction with attached drawing,
It describes in detail to the Magnetic levitation apparatus in the embodiment of the present application.
Embodiment
Fig. 2 is referred to, Magnetic levitation apparatus 100 provided by the embodiments of the present application includes: frequency converter 110, magnetic suspension motor 120
And magnetic suspension system 130.Frequency converter 110 is connect by first end with power supply 200, and frequency converter 110 passes through second end and magnetcisuspension
The input terminal connection of floating system 130, frequency converter 110 are connect by third end with the magnetic suspension motor 120.
Power supply 200 can be AC power source, be specifically as follows three-phase alternating-current supply, which is 380V,
The alternating current of 50Hz.
In a specific embodiment, magnetic suspension motor 120 can be magnetic suspension air blower, magnetic suspension motor 120
Internal structure is as shown in figure 4, include shell 125, electric machine main shaft 121, rotor 122, motor stator 123 and permanent magnet 124.
Hollow accommodating cavity is formed in shell 125, the hollow accommodating cavity is for accommodating electric machine main shaft 121, the inner sidewall of hollow accommodating cavity
Be provided with motor stator 123, rotor 122 and permanent magnet 124 are fixedly connected with electric machine main shaft 121, motor stator 123 with
Rotor 122 matches.
Refer to Fig. 5, electric machine main shaft 121 includes middle part 1215, first connecting portion 1211, second connecting portion 1212, the
Three interconnecting pieces 1213 and shaft end 1214, wherein middle part 1215 passes sequentially through first connecting portion 1211, second connecting portion 1212
And third interconnecting piece 1213 is connect with shaft end 1214.Middle part 1215, first connecting portion 1211, second connecting portion 1212,
Three interconnecting pieces 1213 and shaft end 1214 are cylindrical structure, and the axis of above-mentioned cylindrical structure is on the same straight line.According to
From middle part 1215 to the sequence of shaft end 1214, the diameter of above-mentioned cylindrical structure successively decreases.Two end faces of middle part 1215 are equal
It is fixedly connected with first connecting portion 1211, the end face of the separate middle part 1215 of first connecting portion 1211 and second connecting portion 1212
It is fixedly connected, the end face of the separate first connecting portion 1211 of second connecting portion 1212 is connect with third interconnecting piece 1213, and third connects
The end face of the separate second connecting portion 1212 of socket part 1213 is connect with shaft end 1214.
Refer to Fig. 4, wherein rotor 122 is set to the side surface of middle part 1215, and motor stator 123 is set to
The position opposite with rotor 122 of the inner sidewall of hollow accommodating cavity；Permanent magnet 124 is set to the side of third interconnecting piece 1213
Surface.
Frequency converter 110 can control the revolving speed of the electric machine main shaft 121 of magnetic suspension motor 120, refer to Fig. 2 and Fig. 4, frequency converter
110 third end is connected to the motor stator 123 of magnetic suspension motor 120, and frequency converter 110 can be by adjusting motor stator 123
Rotating excitation field speed carrys out driving motor rotor 122, so that electric machine main shaft 121 be driven to rotate together.The model of the frequency converter 110 can
It, all can be Ge Nisi FG-BL120HP with identical as the model of frequency converter 110 in Fig. 1.
In a specific embodiment, Fig. 4 is referred to, magnetic suspension system 130 may include electromagnet 131.Electromagnet
131 match with the permanent magnet 124 of magnetic suspension motor 120, electromagnet 131 is arranged in the inner sidewall of hollow accommodating cavity and permanent magnetism
The opposite position of body 124.Electromagnet 131 includes being set to the part of 124 top of permanent magnet and being set to below permanent magnet 124
Electromagnet 131 can be connected when magnetic suspension system 130 is powered in part, and make electromagnet 131 is set to 124 top of permanent magnet
Part generate the suction for attracting permanent magnet 124, so that the part for being set to the lower section of permanent magnet 124 of electromagnet 131 is generated repulsion
The repulsion of permanent magnet 124, so as to maintain electric machine main shaft 121 to suspend.
In another embodiment specific implementation mode, Fig. 7 is referred to, Fig. 7 shows another internal junction of magnetic suspension motor 120
Structure, including radial direction magnetic bearing 310, sensor 320, axial magnetic bearing 330, electric machine main shaft 340, motor stator 350, impeller 360,
Outlet spiral case 370 and air intake duct 380.
Wherein, the quantity of radial direction magnetic bearing 310 is four, and radial direction magnetic bearing 310 can maintain electric machine main shaft 340 in such as Fig. 7
The position of the up and down direction shown.
The side of each radial direction magnetic bearing 310 is provided with sensor 320, which can be range sensor,
And sensor 320 and radial direction magnetic bearing 310 are connect with magnetic suspension system 130, sensor 320 is for obtaining electric machine main shaft 340
Specific distance value away from sensor 320, and the specific distance value is sent to magnetic suspension system 130, magnetic suspension system 130 can be with
Radial direction magnetic bearing 310 is controlled according to specific distance value, so as to adjust the suspended state of electric machine main shaft 340.
Fig. 7 is referred to, the side surface of electric machine main shaft 340 is provided with protrusion, which protrudes into axial magnetic bearing 330, axis
Electric machine main shaft 340 can be realized along the shifting of axial (left and right directions i.e. shown in Fig. 7) by attracting or repelling protrusion to magnetic bearing 330
It is dynamic.Axial magnetic bearing 330 is connect with magnetic suspension system 130, by the control of magnetic suspension system 130.
Fig. 7 is referred to, motor stator 350 is distributed in around electric machine main shaft 340, and motor stator 350 and frequency converter 110 connect
It connects.
Impeller 360 is fixedly connected with electric machine main shaft 340, and impeller 360 rotates, impeller 360 with the rotation of electric machine main shaft 340
When rotation, the gas that air intake duct 380 is passed through can be blown out through outlet spiral case 370.
It should be understood that the example and the example shown in Fig. 7 of above-mentioned Fig. 4 and Fig. 5 are merely exemplary, those skilled in the art
Modification appropriate can be carried out according to the above records or is deformed to realize in the case where power supply (such as alternating current) power-off, frequency converter
It collects the motor electric energy that actively rotation generates and carrys out the function of powering for magnetic suspension system.Above-mentioned modification or deformation is also in the application
Protection scope in.
Fig. 3 is referred to, in a specific embodiment, which can also include the first potential device
140, the second potential device 160 and display device 150.First potential device 140 is connected in series in the of the frequency converter 110
Between two ends and the input terminal of the magnetic suspension system 130.The output end of first potential device 140 is also through the second potential device
160 connect with display device 150.
First potential device 140 is input to the magnetic suspension for converting the high-voltage electricity that the frequency converter 110 exports to
The low tension of system 130 can be the first D.C. regulated power supply, and the model of the first D.C. regulated power supply can be HD-200V
5A, or HONOR100-5-800-200-00.
It is input to it should be understood that first potential device 140 can be used for converting the high-voltage electricity that frequency converter 110 exports to
The low tension of magnetic suspension system 130.
By the decompression of the first potential device 140, so that the voltage of first potential device 140 output is down to magnetic suspension system
Within the scope of the normal working voltage of system 130, the normal operation of magnetic suspension system 130 can satisfy.In addition, since the first transformation fills
It sets 140 and high voltage is reduced to low-voltage, meet the running environment of magnetic suspension system 130, since magnetic suspension system 130 works
In the environment of relatively low pressure, compared with high pressure working environment, the degree of danger to people can reduce, there is higher safety
Property.
It should be understood that above-mentioned first potential device 140 is merely exemplary the case where high pressure is become low pressure, the first transformation dress
It is related to the operating voltage of the output voltage of second end and magnetic suspension system 130 to set 140 function.
When the operating voltage of the output voltage of second end and magnetic suspension system 130 is equal, can not have to be arranged this first
Potential device 140, or first potential device 140 can be set, which is not adjusted voltage；
For example, the output voltage of second end and the input voltage of magnetic suspension system are all 200V.
When the output voltage of second end is higher than the input voltage of magnetic suspension system 130, which is used for
Decompression；For example, the output voltage of second end can be 550V, the voltage of magnetic suspension system 130 can be 200V.
When the output voltage of second end is lower than the operating voltage of magnetic suspension system 130, which is used for
Boosting.
Second potential device 160 for convert the high voltage of the output end of the first potential device 140 to be input to it is aobvious
The lower voltage of showing device 150, the second potential device 160 can be the second D.C. regulated power supply, the second D.C. regulated power supply
Model can be PRO ECO 240W 10A.
It should be understood that the example of above-mentioned second potential device 160 is only illustrative, above-mentioned second potential device 160 can be with
Cooperate display device 150 to use, the work of display device 150 is converted to the voltage for exporting the first potential device 140
Voltage.
In one case, in the case where no display device 150, can not have to that second potential device 160 is arranged.
In one case, in the case where being provided with display device 150, the function of second potential device 160 with should
The output voltage of first potential device 140 is related to the operating voltage of the display device 150.
When the operating voltage of the output voltage of the first potential device 140 and display device 150 is equal, setting can not had to
Second potential device 160, or second potential device 160 can be set, which does not carry out voltage
It adjusts；When the output voltage of the first potential device 140 is higher than the operating voltage of display device 150, second potential device 160
For being depressured, for example, the output voltage of the first potential device 140 can be 200V, the operating voltage of display device 150 can be
24V.When the output voltage of the first potential device 140 is lower than the operating voltage of display device 150, second potential device 160
For boosting.
It should be understood that above-mentioned display device 150 is merely exemplary, which can show specific voltage ginseng
The information such as number, which can be used for receiving the parameter of user's input, for example, the display device 150 can be touching
Screen is touched, the various parameters that can be inputted by touching screen, for example, voltage value etc..Optionally, in practical applications, this first
The output end of stable-pressure device 140 can connect common display screen also to show corresponding parameter, and it can also connect it
His device, such as input unit (such as keyboard etc.), power failure alarm device (for example, alarm lamp and/or alarm sound) etc., this
Embodiment is not limited to this for application.
It, can also be with it should be appreciated that the first potential device 140 and the second potential device 160 can be D.C. regulated power supply
It is the device that other are capable of transformation, such as transformer, the specific structure of the first potential device 140 and the second potential device 160 is not answered
This is not understood as the limitation to the application.
Opposite UPS, frequency converter 110 and D.C. regulated power supply are stronger in terms of environment adaptation.The normal work of frequency converter 110
Make temperature range are as follows: -10~50 DEG C；The normal working temperature range of D.C. regulated power supply are as follows: -22~55 DEG C.
Display device 150 is used to show the device parameter of Magnetic levitation apparatus 100, such as motor speed, 110 temperature of frequency converter
Degree, motor temperature etc..
The working principle of Magnetic levitation apparatus 100 provided by the embodiments of the present application are as follows:
Fig. 2 and Fig. 3 are referred to, frequency converter 110 drives magnetic when the power supply 200 that first end connects is connected, through third end
The electric machine main shaft 121 of floatation electric motor 120 rotates, and is the power supply of magnetic suspension system 130 by second end, for maintaining magnetic suspension motor
120 electric machine main shaft 121 is in suspended state.
When power supply 200 is due to abnormal disconnect, frequency converter 110 receives what the rotation of electric machine main shaft 121 generated by third end
Electric energy, and powered by second end to magnetic suspension system 130, so that magnetic suspension system 130 maintains the magnetic suspension motor 120
Electric machine main shaft 121 is in suspended state.
In a specific embodiment, refer to Fig. 4, electric machine main shaft 121 when power supply 200 is disconnected due to inertia still
High-speed rotation rotates to drive motor rotor 122, is formed by magnetic field between motor stator 123 at this time and no longer rotates, therefore,
The magnetic induction line in the magnetic field between the cleavable motor stator 123 of rotor 122, to produce electricl energy.
When frequency converter 110 realizes the revolving speed reduction of electric machine main shaft 121 by built-in algorithm, the second end of frequency converter 110
The voltage (i.e. the input voltage of the first potential device 140) of output is relatively stable, refers to Fig. 6, and frequency converter 110 can be realized when electricity
During the revolving speed of owner's axis 121 drops to 2400 turns by 30000 turns, the voltage of the second end of frequency converter 110 output (i.e. the
The input voltage of one potential device 140) only become 472V from 538V, and the revolving speed of electric machine main shaft 121 drops to 300 from 2400 turns
During turning, although voltage (i.e. the input voltage of the first potential device 140) that the second end of frequency converter 110 export decline compared with
To be obvious, but due to the pressure stabilization function of the first potential device 140, so that the output voltage of the first potential device 140 is still stable,
To provide stable voltage for magnetic suspension system 130, so that the revolving speed of electric machine main shaft 121 is at 300 turns, magnetic suspension system
130 can still stably keep the suspended state of electric machine main shaft 121.After the revolving speed of electric machine main shaft 121 reaches 300 turns or less,
The just not settling flux gradually of electric machine main shaft 121.300 turns of revolving speed is in the safe speed of rotation of magnetic suspension motor 120, and (safe speed of rotation can be set
It is set to 3000rpm) within, therefore, even if the not settling flux of electric machine main shaft 121, not will cause the damage of auxiliary bearing, impeller still
It loses, realizes the normal stopping of magnetic suspension motor 120.
In another embodiment specific implementation mode, refer to Fig. 7, electric machine main shaft 340 when power supply 200 is disconnected due to inertia according to
Right high-speed rotation rotates to drive motor rotor (Fig. 7 does not show), is formed by magnetic field between motor stator 350 at this time and no longer revolves
Turn, therefore, the magnetic induction line in the magnetic field between the cleavable motor stator 350 of rotor, to produce electricl energy.
When frequency converter 110 realizes the revolving speed reduction of electric machine main shaft 340 by built-in algorithm, the second end of frequency converter 110
The voltage (i.e. the input voltage of the first potential device 140) of output is relatively stable, refers to Fig. 6, and frequency converter 110 can be realized when electricity
During the revolving speed of owner's axis 340 drops to 2400 turns by 30000 turns, the voltage of the second end of frequency converter 110 output (i.e. the
The input voltage of one potential device 140) only become 472V from 538V, and the revolving speed of electric machine main shaft 340 drops to 300 from 2400 turns
During turning, although voltage (i.e. the input voltage of the first potential device 140) that the second end of frequency converter 110 export decline compared with
To be obvious, but due to the pressure stabilization function of the first potential device 140, so that the output voltage of the first potential device 140 is still stable,
To provide stable voltage for magnetic suspension system 130, so that the revolving speed of electric machine main shaft 340 is at 300 turns, magnetic suspension system
130 can still stably keep the suspended state of electric machine main shaft 340.After the revolving speed of electric machine main shaft 340 reaches 300 turns or less,
The just not settling flux gradually of electric machine main shaft 340.300 turns of revolving speed is in the safe speed of rotation of magnetic suspension motor, and (safe speed of rotation is settable
Within 3000rpm), therefore, even if the not settling flux of electric machine main shaft 340, not will cause the loss of auxiliary bearing, impeller still,
Realize the normal stopping of magnetic suspension motor.
In the embodiment of the present application, the revolving speed in the case where no external energy supplies of electric machine main shaft 121 is slower and slower, in electricity
When the revolving speed of owner's axis 121 is dropped within safe speed of rotation, magnetic suspension system 130 is just unable to maintain that the outstanding of electric machine main shaft 121 gradually
Floating, after realizing the revolving speed of electric machine main shaft 121 within the safe speed of rotation, 121 ability of electric machine main shaft is contacted with auxiliary bearing, is accomplished
After removing UPS, in abnormal power-down, electric machine main shaft 121 still can normally stop.
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, above in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the above detailed description to the embodiments herein provided in the accompanying drawings is not intended to limit claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
It should be understood that the various parameters above illustrated are merely exemplary, with specific reference to can be according to actual use scene
It is adjusted flexibly, the embodiment of the present application is not limited to this.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present application, it should be noted that term " on ", "lower", "inner", etc. instructions orientation or position close
System for be based on the orientation or positional relationship shown in the drawings or this application product using when the orientation usually put or position close
System is merely for convenience of description the application and simplifies description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.In addition, term " the
One ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the present application, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in this application.
Claims (10)
1. a kind of Magnetic levitation apparatus, which is characterized in that the Magnetic levitation apparatus includes: frequency converter, magnetic suspension motor and magnetcisuspension
Floating system, the frequency converter are connected to power supply by first end, and the frequency converter passes through second end and the magnetic suspension system
Input terminal connection, the frequency converter are connect by third end with the magnetic suspension motor；
The frequency converter is used in power supply conducting, drives the electric machine main shaft of the magnetic suspension motor to turn by the third end
It is dynamic, it is that the magnetic suspension system is powered for maintaining the electric machine main shaft of the magnetic suspension motor to be in suspension by the second end
State；
The frequency converter is also used to when power supply disconnects, and receives the electricity that the electric machine main shaft rotation generates by the third end
Can, and powered by the second end to the magnetic suspension system, so that the magnetic suspension system maintains the magnetic suspension motor
Electric machine main shaft be in suspended state.
2. Magnetic levitation apparatus according to claim 1, it is characterised in that: further include the first potential device, described first becomes
Pressure device is connected in series between the second end of the frequency converter and the input terminal of the magnetic suspension system.
3. Magnetic levitation apparatus according to claim 2, it is characterised in that: first potential device is the first DC voltage-stabilizing
Power supply.
4. Magnetic levitation apparatus according to claim 2, it is characterised in that: further include display device, the display device with
The output end of first potential device connects.
5. Magnetic levitation apparatus according to claim 4, it is characterised in that: further include the second potential device, described second becomes
Pressure device is connected in series between the output end and the display device of first potential device.
6. Magnetic levitation apparatus according to claim 5, it is characterised in that: second potential device is the second DC voltage-stabilizing
Power supply.
7. Magnetic levitation apparatus according to claim 1, it is characterised in that: the power supply is AC power source.
8. Magnetic levitation apparatus according to claim 7, it is characterised in that: the AC power source is alternating current.
9. Magnetic levitation apparatus according to claim 1, it is characterised in that: the magnetic suspension motor is magnetic suspension air blower.
10. Magnetic levitation apparatus according to claim 1, it is characterised in that: the frequency converter is Ge Nisi FG-BL120HP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920536574.9U CN209526671U (en) | 2019-04-18 | 2019-04-18 | Magnetic levitation apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920536574.9U CN209526671U (en) | 2019-04-18 | 2019-04-18 | Magnetic levitation apparatus |
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| CN209526671U true CN209526671U (en) | 2019-10-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936324A (en) * | 2019-04-18 | 2019-06-25 | 佛山格尼斯磁悬浮技术有限公司 | Magnetic levitation apparatus |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936324A (en) * | 2019-04-18 | 2019-06-25 | 佛山格尼斯磁悬浮技术有限公司 | Magnetic levitation apparatus |
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