CN108809154A - A kind of novel magnetically levitated high-speed electric expreess locomotive and the method for detecting motor rotor position - Google Patents
A kind of novel magnetically levitated high-speed electric expreess locomotive and the method for detecting motor rotor position Download PDFInfo
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- CN108809154A CN108809154A CN201810612262.1A CN201810612262A CN108809154A CN 108809154 A CN108809154 A CN 108809154A CN 201810612262 A CN201810612262 A CN 201810612262A CN 108809154 A CN108809154 A CN 108809154A
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- radial displacement
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 92
- 238000006073 displacement reaction Methods 0.000 claims abstract description 61
- 239000000523 sample Substances 0.000 claims description 30
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- KLDZYURQCUYZBL-UHFFFAOYSA-N 2-[3-[(2-hydroxyphenyl)methylideneamino]propyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCN=CC1=CC=CC=C1O KLDZYURQCUYZBL-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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- 201000001098 delayed sleep phase syndrome Diseases 0.000 description 1
- 208000033921 delayed sleep phase type circadian rhythm sleep disease Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
Abstract
The present invention relates to a kind of novel magnetically levitated high-speed electric expreess locomotive and the methods for detecting motor rotor position, and the motor includes rotor and stator, and the rotor includes：Radial displacement detects cylinder and position detection cylinder, the radial displacement detection cylinder and the coaxial arrangement of position detection cylinder, and the radial displacement detection cylinder is the cylinder that radius is R, the position detection cylinder is the cylinder that edge is regular arc, and the maximum radius of the position detection cylinder is R.Rotor design is upper and lower two parts structure of different shapes by technical solution provided by the invention, by detection sensor detect up and down two-part outer surface between sensor at a distance from rotor space position is calculated, and realize the indirect measurement of rotor space angle.
Description
Technical field
The invention belongs to motor field more particularly to a kind of novel magnetically levitated high-speed electric expreess locomotive and detect motor rotor position
Method.
Background technology
Up to tens thousand of turns even ten tens of thousands of turns per minute of high speed permanent magnet motor rotor, conventional high-speed electric expreess locomotive control uses rotor
Position-sensorless control algorithm carries out motor control can cause rotor since position estimation inaccuracy can cause motor desynchronizing when serious
The irreversible loss of excitation of magnet steel.
Rotor real time position is provided to motor speed more demanding occasion multiselect rotary transformer.Rotary transformer at present
To become installation dimension smaller within 30000rpm, and as rotating speed improves rotation for maximum speed, for Large-power High-Speed motor, due to
Motor size larger impact its in high-speed high-power motor applications.
Accordingly, it is desirable to provide a kind of method of novel magnetically levitated high-speed electric expreess locomotive and detection motor rotor position is existing to solve
The deficiency of technology.
Invention content
Of the existing technology in order to solve the problems, such as, the present invention provides a kind of novel magnetically levitated high-speed electric expreess locomotive and detection electricity
Rotor-position sensor probe and radial displacement transducer probe are integrated together, in list by the method for machine rotor position
It is integrated with the measurement of rotor space angle and magnetic bearing displacement in a detection sensor, keeps the structure of high-speed electric expreess locomotive compacter.
A kind of novel magnetically levitated high-speed electric expreess locomotive, including rotor and stator, the rotor include：Radial displacement detect cylinder and
Position detection cylinder, the radial displacement detection cylinder and the coaxial arrangement of position detection cylinder, and the radial displacement detects column
Body is the cylinder that radius is R, and the position detection cylinder is the cylinder that edge is regular arc, and the position detection cylinder
Maximum radius be R.
Further, the regular arc includes：At least one protrusion and at least one recessed portion, the protrusion with
The recessed portion is spaced appearance successively.
Further, the arcwall face of the position detection cylinder between axle center at a distance from be r, wherein r=r0+a*sin
(360*t*n), theta=t*360, r0+a≤R, r0 are the basic size of the position detection cylinder arcwall face, and a is institute's rheme
The arcwall face of detection cylinder is set relative to the fluctuation amplitude that radius is the cylindrical surfaces r0, theta is position detection column when rotor rotates
The angle of body, t are the constant that value is 0~1, n be rotor rotate a circle position detection cylinder arcwall face fluctuation periodicity,
N is positive integer.
Further, further include：Detection sensor, the detection sensor include：Radial displacement transducer is popped one's head in and is turned
Sub- position sensor probe, the radial displacement transducer probe detect that the arcwall face of cylinder is vertical to be set with the radial displacement
It sets, the arcwall face of the rotor-position sensor probe and the position detection cylinder is vertically arranged.
A method of detection motor rotor position turns for detecting any of the above-described novel magnetically levitated high-speed electric expreess locomotive
The position of son, including：
Detect the position of radial displacement detection cylinder；
The position of rotor is calculated by the position.
Further, the position of the detection radial displacement detection cylinder includes：Radial displacement transducer probe is measured to arrive
Radial displacement detects the distance of the arcwall face of cylinder.
Further, the position for calculating rotor includes：According to the following formula shown in calculate rotor-position sensor probe with
Distance between the arcwall face of position detection cylinder,
Delta=delta0+a*sin (3600*t*n)-delta R
a+r0≤R
Wherein, delta is the radial distance of rotor-position sensor probe and the arcwall face of position detection cylinder, delta0
The radial distance of radial displacement transducer probe and the arcwall face of radial displacement detection cylinder, R are radial when for rotor without acceptance of persons
The radius of displacement detecting cylinder, r0 are the basic size of position detection cylinder arcwall face, and t is the constant that value is 0~1, and n is to turn
Son rotate a circle position detection cylinder arcwall face fluctuation periodicity, n is positive integer, radial when delta R are rotor displacement
The radial distance of displacement sensor probe and the arcwall face of radial displacement detection cylinder.
Technical scheme of the present invention has the following advantages that compared with the immediate prior art：
Rotor design is upper and lower two parts structure of different shapes by technical solution provided by the invention, is sensed by detecting
Device detection up and down two-part outer surface between sensor at a distance from rotor space position is calculated, and realize rotor space angle
The indirect measurement of degree.
Technical solution rotor-position provided by the invention is directly read by sensor without being carried out by no position algorithm
Estimation provides motor control accuracy, prevents motor desynchronizing and irreversible loss of excitation significantly.
Detection sensor in technical solution provided by the invention can be integrated into existing magnetic suspension bearing radial displacement sensing
In device, only it need to increase axial space layout angle detection probe in existing radial displacement transducer, it is simple and practical.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is rotor sectional view of the present invention；
Fig. 3 is rotor of the present invention and sensor probe relative position schematic diagram；
Fig. 4 is detecting distance variation of the present invention and rotor-position relation schematic diagram.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1,
The present invention provides a kind of novel magnetically levitated high-speed electric expreess locomotives, as shown in Figure 1, including rotor and stator, rotor includes：
Radial displacement detects cylinder and position detection cylinder.
Wherein, radial displacement detection cylinder and the coaxial arrangement of position detection cylinder, and radial displacement detection cylinder is radius
For the cylinder of R, position detection cylinder is the cylinder that edge is regular arc, and the maximum radius of position detection cylinder is R.
Optionally, regular arc includes：At least one protrusion and at least one recessed portion, protrusion and recessed portion are successively
Interval occurs.
Optionally, the arc detection faces of the position detection cylinder of rotor are designed as follows, are turned with motor
Sub- axis is that Z axis establishes cylindrical coordinate, and radial displacement detects cylinder radius R, then the side of the arc detection faces of position detection cylinder
Journey is as follows：
R=r0+a*sin (360*t*n)
Theta=t*360
Z=z0
In formula, r0 is the basic size of the position detection cylinder arcwall face, and a is the arcwall face of the position detection cylinder
Relative to the fluctuation amplitude that radius is the cylindrical surfaces r0, and the angle that r0+a≤R, theta are position detection cylinder when rotor rotates,
T is the constant that value is 0~1, n be rotor rotate a circle position detection cylinder arcwall face fluctuation periodicity, n is just whole
Number.The shape graph of the arc detection faces of position detection cylinder is as Figure 2-3.
Optionally, further include：Detection sensor,
Detection sensor includes：Radial displacement transducer is popped one's head in and rotor-position sensor probe, radial displacement transducer
It pops one's head in and is vertically arranged with the arcwall face of radial displacement detection cylinder, rotor-position sensor probe and the position detection cylinder
Arcwall face is vertically arranged.
Optionally, radial displacement transducer probe and rotor-position sensor probe for it is axial side by side and the two axial position
It is identical, rotor-position sensor probe detection rotor space position, radial displacement transducer probe detection rotor displacement precision.
By designing the measurement function of rotor integrated space angle and rotor displacement on a sensor, realization pair above
The indirect measurement of rotor space angle, in the measurement of single sensor integration rotor space angle and magnetic bearing displacement, make
The structure of motor is compacter.
Embodiment 2,
Conceived based on same invention, it is above-mentioned for detecting the present invention provides a kind of method of detection motor rotor position
The position of any novel magnetically levitated high speed rotor of motor, including：
Detect the position of radial displacement detection cylinder；
The position of rotor is calculated by the position.
Wherein, the position of radial displacement detection cylinder is that radial displacement transducer is popped one's head in the arc of radial displacement detection cylinder
The distance in shape face.As shown in figure 4, detecting distance variation and rotor-position relation schematic diagram when being rotated for rotor.
Optionally, the position for calculating rotor includes：Rotor-position sensor probe is calculated shown according to the following formula to examine with position
The distance between the arcwall face of cylinder is surveyed,
Delta=delta0+a*sin (360*t*n)-delta R
a+r0≤R
Wherein, delta is the radial distance of rotor-position sensor probe and the arcwall face of position detection cylinder, delta0
The ideal radial distance of radial displacement transducer probe and the arcwall face of radial displacement detection cylinder, R are when for rotor without acceptance of persons
Radial displacement detects the radius of cylinder, and r0 is the basic size of position detection cylinder arcwall face, and t is the constant that value is 0~1, n
Rotate a circle the periodicity of the arcwall face fluctuation of position detection cylinder for rotor, and n is positive integer, when delta R are rotor displacement
The radial distance that radial displacement transducer is popped one's head in the arcwall face of radial displacement detection cylinder.
Rotor-position sensor probe and the gap width delta of rotor surface are carried out centered on delta0 known to formula
Upper and lower pulsating, rotor space position can be calculated by being resolved to measurement voltage signal, and realize rotor space angle
It measures indirectly.
Magnetic suspension motor rotor or ball bearings rotor inevitably deviate center when rotating at high speed,
It is detected because magnetic bearing radial displacement transducer can deviate center to main shaft, which is just used as rotor operation
When deviate the compensation of center, compensate because rotor deviates what center caused rotor-position sensor probe with rotor surface
The deviation of ideal value.It is such as delta R when armature spindle is located at distance, when rotor-position sensor probe detecting distance is delta,
It needs to subtract delta R when then resolving the correspondence of rotor-position at this time to obtain causing because rotor-position deviates center
The deviation of measured value and rotor actual angle.
It should be noted that herein, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.
It is understood that embodiments described herein can use hardware, software, firmware, middleware, microcode or its
It combines to realize.For hardware realization, processing unit may be implemented in one or more application-specific integrated circuit (Application
Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing,
DSP), digital signal processing appts (DSP Device, DSPD), programmable logic device (Programmable
LogicDevice, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general place
It manages in device, controller, microcontroller, microprocessor, other electronic units for executing herein described function or combinations thereof.
For software implementations, the techniques described herein can be realized by executing the unit of function described herein.Software generation
Code is storable in memory and is executed by processor.Memory can in the processor or portion realizes outside the processor.
Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, depends on the specific application and design constraint of technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided herein, it should be understood that disclosed device and method can pass through others
Mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, device or unit
It connects, can be electrical, machinery or other forms.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, the technical solution of the embodiment of the present invention is substantially
The part of the part that contributes to existing technology or the technical solution can embody in the form of software products in other words
Come, which is stored in a storage medium, including some instructions are used so that a computer equipment (can
To be personal computer, server or the network equipment etc.) execute all or part of each embodiment the method for the present invention
Step.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can to store program
The medium of code.
It should be noted that the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (7)
1. a kind of novel magnetically levitated high-speed electric expreess locomotive, including rotor and stator, which is characterized in that the rotor includes：Radial displacement
Detect cylinder and position detection cylinder, the radial displacement detection cylinder and the coaxial arrangement of position detection cylinder, and the radial direction
Displacement detecting cylinder is the cylinder that radius is R, and the position detection cylinder is the cylinder that edge is regular arc, and institute's rheme
The maximum radius for setting detection cylinder is R.
2. a kind of novel magnetically levitated high-speed electric expreess locomotive according to claim 1, which is characterized in that it is described rule arc include：
At least one protrusion and at least one recessed portion, the protrusion are spaced appearance successively with the recessed portion.
3. a kind of novel magnetically levitated high-speed electric expreess locomotive according to claim 2, which is characterized in that the position detection cylinder
Arcwall face between axle center at a distance from be r, wherein r=r0+a*sin (360*t*n), theta=t*360, r0+a≤R, r0 is institute
State the basic size of position detection cylinder arcwall face, a is that the arcwall face of the position detection cylinder relative to radius is r0 cylinders
The fluctuation amplitude in face, theta are the angle of position detection cylinder when rotor rotates, and t is the constant that value is 0~1, and n is rotor
The periodicity of the arcwall face fluctuation of the position detection that rotates a circle cylinder, n is positive integer.
4. a kind of novel magnetically levitated high-speed electric expreess locomotive according to claim 1, which is characterized in that further include：Detection sensor,
The detection sensor includes：Radial displacement transducer is popped one's head in and rotor-position sensor probe, the radial displacement transducer
It pops one's head in and is vertically arranged with the arcwall face of radial displacement detection cylinder, the rotor-position sensor probe is examined with the position
The arcwall face for surveying cylinder is vertically arranged.
5. a kind of method of detection motor rotor position, for detecting the novel magnetically levitated height as described in claim 1-4 is any
The position of speed motor rotor, which is characterized in that including：
Detect the position of radial displacement detection cylinder；
The position of rotor is calculated by the position.
6. a kind of method of detection motor rotor position according to claim 5, which is characterized in that the radial position of the detection
The position for moving detection cylinder includes：Measure the distance that radial displacement transducer probe detects the arcwall face of cylinder to radial displacement.
7. a kind of method of detection motor rotor position according to claim 6, which is characterized in that the calculating rotor
Position includes：Rotor-position sensor is calculated shown according to the following formula to pop one's head at a distance between the arcwall face of position detection cylinder,
Delta=delta0+a*sin (360*t*n)-delta R
a+r0≤R
Wherein, delta is the radial distance of rotor-position sensor probe and the arcwall face of position detection cylinder, and delta0 is to turn
Son without acceptance of persons when radial displacement transducer probe with radial displacement detection cylinder arcwall face radial distance, R is radial displacement
The radius of cylinder is detected, r0 is the basic size of position detection cylinder arcwall face, and t is the constant that value is 0~1, and n revolves for rotor
The periodicity of the arcwall face fluctuation of the position detection that circles cylinder, n are positive integer, radial displacement when delta R are rotor displacement
The radial distance of sensor probe and the arcwall face of radial displacement detection cylinder.
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| CN201810612262.1A CN108809154A (en) | 2018-06-14 | 2018-06-14 | A kind of novel magnetically levitated high-speed electric expreess locomotive and the method for detecting motor rotor position |
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| CN201810612262.1A CN108809154A (en) | 2018-06-14 | 2018-06-14 | A kind of novel magnetically levitated high-speed electric expreess locomotive and the method for detecting motor rotor position |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111579433A (en) * | 2020-05-08 | 2020-08-25 | 北京华宇展业科技有限公司 | Magnetic suspension fluid on-line detector |
| CN113949224A (en) * | 2021-09-29 | 2022-01-18 | 南京磁谷科技股份有限公司 | Rotating speed detection device and method for magnetic suspension high-speed motor |
| CN116840680A (en) * | 2023-09-01 | 2023-10-03 | 苏州中科科仪技术发展有限公司 | Magnetic suspension molecular pump motor performance detection method and application thereof |
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| US20030155829A1 (en) * | 2002-02-20 | 2003-08-21 | Calnetix | Method and apparatus for providing three axis magnetic bearing having permanent magnets mounted on radial pole stack |
| CN106321496A (en) * | 2016-11-04 | 2017-01-11 | 珠海格力节能环保制冷技术研究中心有限公司 | High-speed magnetic suspension rotor type axial detection device and centrifugal compressor |
| CN208424239U (en) * | 2018-06-14 | 2019-01-22 | 珠海格力电器股份有限公司 | A kind of novel magnetically levitated high-speed motor |
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| US20030155829A1 (en) * | 2002-02-20 | 2003-08-21 | Calnetix | Method and apparatus for providing three axis magnetic bearing having permanent magnets mounted on radial pole stack |
| CN106321496A (en) * | 2016-11-04 | 2017-01-11 | 珠海格力节能环保制冷技术研究中心有限公司 | High-speed magnetic suspension rotor type axial detection device and centrifugal compressor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579433A (en) * | 2020-05-08 | 2020-08-25 | 北京华宇展业科技有限公司 | Magnetic suspension fluid on-line detector |
| CN113949224A (en) * | 2021-09-29 | 2022-01-18 | 南京磁谷科技股份有限公司 | Rotating speed detection device and method for magnetic suspension high-speed motor |
| CN113949224B (en) * | 2021-09-29 | 2024-02-13 | 南京磁谷科技股份有限公司 | Rotating speed detection device and method for magnetic suspension high-speed motor |
| CN116840680A (en) * | 2023-09-01 | 2023-10-03 | 苏州中科科仪技术发展有限公司 | Magnetic suspension molecular pump motor performance detection method and application thereof |
| CN116840680B (en) * | 2023-09-01 | 2023-11-10 | 苏州中科科仪技术发展有限公司 | Magnetic suspension molecular pump motor performance detection method and application thereof |
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