CN101169459B - Device for determining phase of two magnetic fields and uses - Google Patents
Device for determining phase of two magnetic fields and uses Download PDFInfo
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- CN101169459B CN101169459B CN2007101999179A CN200710199917A CN101169459B CN 101169459 B CN101169459 B CN 101169459B CN 2007101999179 A CN2007101999179 A CN 2007101999179A CN 200710199917 A CN200710199917 A CN 200710199917A CN 101169459 B CN101169459 B CN 101169459B
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- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 28
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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Abstract
The invention relates to a device for determining phase of two magnetic fields (H1, H2) and a application thereof, wherein the device comprises a controlling and calculating unit (108), two magnetic field sensors (101, 102) installed at a predefined distance (d) and connected to the controlling and calculating unit (108), and display units (103-107) connected to the controlling and calculating unit (108). Wherein, the controlling and calculating unit (108) is disposed for determining phase of the two magnetic fields loaded substantially with another magnetic field sensor (101, 102) respectively based on the measured value (211, 212, 213,214) of magnetic field sensors (101, 102), controlling the display units (103-107), and indicating determined phase.
Description
Technical field
The present invention relates to a kind of equipment and application thereof that is used for the phase place in definite two magnetic fields.
Background technology
When making motor or generator, need check stator winding and connection thereof.When assembling motor or generator, to notice that especially the rotation direction of rotor conforms to stator.Must carry out the connection of single stator winding with correct mode for this reason, and in the occasion of three phase electric machine, the phase place of correctly distributing three-phase current.Especially when New-type electric machine, just connect after being arranged on stator winding in the stator through being everlasting, produce a series of possibilities of incorrect link or cabling thus.
Mentioned possibility to three-phase current phase error distribution joint.Other possibility is that one or more winding is connected by error with remaining winding, correctly aims at and pack winding into or exchanged two windings.
Another problem when the stator winding of check motor or generator is, makes number of different types for example electric rotating machine or linear electric machine, synchronous motor or asynchronous machine etc. and different big or small motor or generator usually.
Known rotation direction by the stator decision is confirmed through compass (Kompass) mode.For this purpose, for example be arranged on three-phase current on the joint that circular stator provides for this reason, so that produce rotating magnetic field in the inside of stator.Introduce compass in the magnetic field, pin begins rotation thus.The user can observe sense of rotation.Make to identify in this way and do not connect the perhaps single winding of incorrect link.Such thing can take place equally, a part that is rotated in stator of promptly observing magnetic field with on the different direction of another part, carry out.This method can not be used for linear motor stator.
In a kind of method of check synchronous linear motor, magnetic direction is confirmed by three magnetic field sensors that are arranged on the selected stator tooth.This method cost is more, because need special equipment for magnetic field sensor accurately is set.Need use special voltage source in addition, so that in stator, produce special magnetic field.This problem is owing to exist different stator type more outstanding.
Summary of the invention
Therefore task of the present invention is, a kind of equipment is provided, and they are applicable to definite magnetic field, but and the stator winding that still can check different types of structure simply exactly.
This task is accomplished through a kind of equipment that is used for the phase place in definite two magnetic fields, and it has,
-control and computing unit,
Magnetic field sensor that-two distances of apart predesignating are provided with, that be connected with computing unit with said control and
-the display device that is connected with computing unit with said control,
Wherein, said control and computing unit are provided for confirming two phase places that load the magnetic field of another magnetic field sensor respectively by the measured value of magnetic field sensor, and control said display device, the phase place that its indication is confirmed.
The equipment that is used for the phase place in definite two magnetic fields according to the invention is applicable to carries out method of the present invention, and has corresponding device thereof.Equipment of the present invention has control and computing unit, two magnetic field sensor that is connected with computing unit with control and display device that are connected with computing unit with control apart especially; The distance of wherein said two magnetic field sensors apart greater than 10mm and less than 30mm, is in particular 25mm especially.Control and computing unit are used for being confirmed by the measured value of two magnetic field sensors the phase place in two magnetic fields, and wherein each magnetic field sensor in two magnetic field sensors is loaded by another magnetic field in two magnetic fields basically.Display device is controlled to be controlled with computing unit, makes it indicate determined phase place.Especially the occasion at three-phase current provides [(π-a);-a], [a; (π-a)] and [a; A] the value scope, and carry out comprehensively for demonstration, should in being approximately 0 scope, particularly fully choose at this a less than π/3.Then can be negative phase place ", " just " and " mistake " perhaps " same-phase " distribute to these scopes.Magnetic field sensor can be configured to digital or analog Hall element or magnetic resistance (MR) sensor especially, perhaps is configured to Foster probe (fluxgate (fluxgate)).For control and computing unit application have integrated circuit or microprocessor.
The present invention relates at least two magnetic fields, for example by the magnetic field that winding produced of stator.For by two adjacent first magnetic field that winding produced and second magnetic fields; Each magnetic field loads another magnetic field sensor basically respectively; That is for example to load first sensor more than second sensor in first magnetic field, and it is more than first sensor that second magnetic field loads second sensor.
Through solution of the present invention a kind of equipment is provided, it can be simply and accurately confirms the phase place between the adjacent stator winding.This equipment can be constructed on small portable ground, and in reality, is proved solid especially and reliable owing to its simple structure.Equipment of the present invention is particularly suitable for using in the method for the invention.
Control and computing unit are set are used to control display device, make the loading of its indication magnetic field to each magnetic field sensor in the magnetic field sensor, this is favourable.Can check two magnetic field sensors whether to load with simple mode thus, the special thus integrity that allows to check accordingly, produces the winding in magnetic field by magnetic field.
Display device has at least one light emitting diode, at least one graphic alphanumeric display and/or digital indicator and suits.Said in addition equipment can have interface, for example is used to connect computing machine.Preferred improvement project has three or five light emitting diodes.The equipment that has light emitting diode of the present invention can be made especially simply, and is fit to the indication magnetic direction particularly well.Can respectively light emitting diode be attached troops to a unit in magnetic field sensor especially, so that like of the loading of above-mentioned indication magnetic field to magnetic field sensor.Each light emitting diode can be provided for indicating described phase range.
Equipment of the present invention advantageously has electric supply installation, particularly battery.Through battery is provided, this equipment can be constructed by compact easily with portablely.Optional in addition or additionally, this equipment also can be configured to by the externally fed device for example power-supply device supply power.
The method that is used to check the stator winding of motor and generator according to the invention; On this stator winding, be applied with three-phase current or exchange current; First phase place in the magnetic field of in the method, at first confirming in first pair of adjacent stator winding, to be produced by three-phase current or exchange current.Then with determined first phase place with compare by the desired phase place of the three-phase current that applies or exchange current and/or with second phase place in the magnetic field that in second pair of adjacent stator winding, is produced by three-phase current or exchange current.Then according to the above-mentioned correctness (Fehlerfreiheit) of relatively coming to confirm stator winding.This method is carried out simple especially, and is fit to various types of motors and generator.
In method of the present invention; Suitable is; Said step and the phase place of first phase place that will confirm and expectation and/or the step that compares with the second definite phase place of confirming first phase place, for other, particularly all adjacent stator winding are to carrying out repetition.Thus can be especially simple with promptly check all stator winding fully.
Preferably export determined phase place with digital form.It can show on digital indicator especially then, exports through existing interface etc.
Suitable especially is to use equipment of the present invention to confirm phase place in the method for the invention.Equipment of the present invention is fit to method of the present invention particularly well and generally is used to check the method for the stator winding of motor or generator to use, because its structure compact is light and manufacturing expense suitable.
Additional advantage of the present invention and improvement project provide from explanation and accompanying drawing.
Easy to understand, above-mentioned and following also not only can be in the combination that at every turn provides but also in other combination or use separately with the characteristic of explanation, and do not leave framework of the present invention.
The present invention schematically illustrates according to embodiment in the accompanying drawings, specifies with reference to accompanying drawing below.
Description of drawings
Fig. 1 schematically illustrates the embodiment of equipment according to the invention on the stator of linear electric machine;
Fig. 2 illustrates line chart, two sensor signals by the magnetic field of equipment collection shown in Figure 1 of its expression;
Fig. 3 representes the process flow diagram of a kind of embodiment of the method for the invention.
Reference numerals list
100 equipment
101,102 digital hall sensor
103-107 LED
108 microprocessors
109 batteries
150 stators
The 151-154 stator tooth
151 '-154 ' stator winding
200 line charts
201 y axle U
202 x axle t
211,212 sensing datas
213 rising edges
214 measured values at time point 213
The 301-306 method step
H1-H4 magnetic field
U, V, W three-phase current phase place
Embodiment
Fig. 1 totally representes one of equipment according to the invention preferred embodiment with 100.Equipment 100 has and is configured to LED103,104 display device under two magnetic field sensors that are configured to digital hall sensor 101,102 and two.The electric supply installation that this external equipment 100 has the display device that is configured to LED 105,106,107, the control that is configured to microprocessor 108 and computing unit and is configured to battery 109.Hall element 101,102, LED 103 to 107, microprocessor 108 and battery 109 to each other in case of necessity for example can through other assemblies for example resistance, electric capacity, transistor etc. be connected, as known for the professional.
Hall element has apart from d each other, and this distance is 25mm in this example.So select apart from d, make equipment 100 be applicable to and use stator commonly used.For example, the stator tooth of one type of modern electrical machine has the tooth pitch D of about 25mm.Through aiming at tooth to said equipment sideling, this equipment also can be used to have the stator of less tooth pitch with particularly advantageous mode.So be equivalent to the diagonal line of a rectangle apart from d, this rectangle is confirmed by tooth pitch D on one side.
In Fig. 1, express a section of stator 150 equally.Stator 150 has the tooth 151 to 154 of equidistance.Tooth 151 to 154 distance each other respectively is D.In the example shown, tooth 151 to 154 distance B each other be equivalent to sensor 101 and 102 apart from d, i.e. 25mm.
Each tooth 151 to 154 has a winding 151 ' to 154 '.It is as common in the three phase electric machine, and single winding 151 ' to 154 ' connects each other like this, makes per the 3rd winding be connected to each other.In the example shown, winding 151 ' is connected with winding 154 ' etc.Easy to understand, parallel connection is fine equally.When assembling motor or generator, must be noted that the correct each other cabling of single winding or connect and for the correct distribution of phase U, V, W.Electric current through winding 151 ' produces a magnetic field H 1 etc.
Be the check stator, stator is last with joint U, V, W that its joint is connected to three-phase current power supply (not shown).The result forms the magnetic field of a rotation, and they can be through equipment 100 checks.
Mobile or rotation direction can be derived from the phase place in magnetic field.If the magnetic field H 2 of load sensor 102 is ahead of the magnetic field H 1 of load sensor 101, then this is corresponding to being moved to the left, if the magnetic field H 2 of load sensor 102 lags behind the magnetic field H 1 of load sensor 101, as shown in Figure 2, then this is corresponding to moving right.
One of the method for the stator winding that is used for checking motor or generator of the present invention preferred embodiment, the user in succession at all stator winding to 151 ', 152 '; 152 ', 153 '; 153 ', 154 ' etc. or stator tooth to 151,152; 152,153; 153,154 above equipment 100 is set, and with corresponding indicated direction (phase place) with the expectation or compare with previous indicated direction.Must be noted that second kind of occasion, indicate through LED 105 or through LED 106 usefulness signals in the same direction of each centering.
How explanation can confirm the phase place in second magnetic field according to Fig. 2, thereby confirms sense of rotation.Draw a line chart 200 among Fig. 2, wherein the output signal of magnetic field sensor 101,102 illustrated with respect to the time.The output signal is illustrating corresponding to the time t on the x axle 202 as voltage U on the y axle 201.In this line chart 200, the output voltage that shows sensor 101 or 102 is along with change of time 211,212.Shown in voltage curve form by single measured value (not shown), these measured values respectively have the time gap in several ns scopes.Sensor arrangement is bipolar digital Hall element.Bipolar digital Hall element is output voltage when exist confirming the magnetic field of direction (for example south orientation north) usually, on the contrary its output voltage not when having the magnetic field of other direction (for example north orientation south).
Measuring curve (voltage curve) 211 changes corresponding to the time of the symbol of the magnetic field H 1 of load sensor 101 basically.Equally, measuring curve 212 changes corresponding to the time of the symbol of the magnetic field H 2 of load sensor 102 basically.Microprocessor 108 can be confirmed the phase relation in two magnetic fields from the curve that exists.It especially can be from deriving phase relation with the rising of selected sensor or the relation of putting fall time.
In the example shown, select sensor 101 and in the output valve of the output 211 of (arbitrarily) rise time point (positive edge) and another sensor relatively with it for this reason.Illustrate be rise time point 213 measuring curve 211 with of curve 212 under measured value 214 relatively.
As in the example shown; If the output valve of sensor 102 is zero at the rise time of sensor 101 point 213, then load sensor 201 causes that perhaps the magnetic field H 1 of measuring curve 211 is ahead of load sensor 202 or causes the magnetic field H 2 of measuring curve 212.What belong to this characteristic is moving direction or the rotation direction towards the direction of magnetic field sensor 102.Microprocessor 108 triggers LED 106 as a result.
On the contrary, if sensor 102 is positive (not shown) in the output valve of the rise time of sensor 101 point 213, cause that then the magnetic field H 1 of measuring curve 211 lags behind the magnetic field H 2 that causes measurement curve 212.What belong to this characteristic is moving direction or the rotation direction towards magnetic field sensor 101 directions.Microprocessor 108 triggers LED 105 as a result.
Easy to understand can be observed falling edge equally.Equally can be for example derive phase place for the professional from the output data of analog sensor.
In Fig. 3,, on these stator winding, be applied with three-phase current or exchange current now according to a kind of preferred implementation of the method for flowchart text stator winding that is used to check motor or generator of the present invention.
This method is in method step 301 beginnings.In the method step of following 302, equipment of the present invention, particularly according to the equipment 100 of Fig. 1, be arranged on like this first pair of adjacent stator winding above, make each of two magnetic field sensors can both detect the magnetic field of stator winding.This setting up procedure is supported that by LED 103 and 104 in case magnetic field is detected by affiliated magnetic field sensor 101 or 102, LED is with regard to luminous or flicker.As long as this equipment is provided with by regulation, phase place is just definite by microprocessor 108, and through corresponding LED 105 to 107 indications.
In the method step of following 303, the user for next adjacent stator winding to the described operation of repetition methods step 302.Can read the right phase place of this adjacent stators winding at the end of method step 303.
In the method step of following 304, two phase places of confirming so far now are compared to each other.If two phase places are identical, so or return method step 303, it is right to observe next stator winding at this, otherwise when inspected all stator winding to the time, in step 305, finish this method.
If two phase place differences that adjacent stator winding is right then this means a vicious stator winding, to this branch in step 306, this method finishes.Must repair stator winding then, for example change or connection again.
Easy to understand, shown in only express in the accompanying drawing of the present invention especially preferred embodiment.Can expect each other embodiment in addition, other layout or the number through sensor or other assemblies particularly, and do not leave scope of the present invention.
Claims (6)
1. be used for confirming two magnetic fields (H1, the equipment of phase place H2) is characterized in that,
-control and computing unit (108),
Magnetic field sensor (101,102) that-two distances of apart predesignating (d) are provided with, that be connected with computing unit (108) with said control and
-the display device (103-107) that is connected with computing unit (108) with said control,
Wherein, said control and computing unit (108) are provided for the measured value (211 by magnetic field sensor (101,102); 212,213,214) confirm that two load another magnetic field sensor (101 respectively; 102) magnetic field (H1; H2) phase place, and control said display device (103-107), the phase place that its indication is confirmed.
2. according to the equipment of claim 1, it is characterized in that said control and computing unit (108) are provided for controlling display device (103-107), (H1 is H2) to the loading of each magnetic field sensor (101,102) to make its indication magnetic field.
3. according to the equipment of claim 1 or 2, it is characterized in that said display device has at least one light emitting diode (103-107), at least one graphic alphanumeric display and/or at least one digital indicator.
4. equipment according to claim 1 and 2 is characterized in that said equipment has electric supply installation.
5. equipment according to claim 4 is characterized in that, said electric supply installation is battery (109).
6. according to the application of each described equipment (100) in the claim 1 to 4, be used to check the stator winding (151 '-154 ') of motor or generator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200610050551 DE102006050551A1 (en) | 2006-10-26 | 2006-10-26 | Device for determining a phase position of two magnetic fields and method for checking stator windings |
| DE102006050551.4 | 2006-10-26 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102251763A Division CN102360056A (en) | 2006-10-26 | 2007-10-26 | Method for checking stator windings of motor or generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101169459A CN101169459A (en) | 2008-04-30 |
| CN101169459B true CN101169459B (en) | 2012-02-08 |
Family
ID=39295011
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101999179A Expired - Fee Related CN101169459B (en) | 2006-10-26 | 2007-10-26 | Device for determining phase of two magnetic fields and uses |
| CN2011102251763A Pending CN102360056A (en) | 2006-10-26 | 2007-10-26 | Method for checking stator windings of motor or generator |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102251763A Pending CN102360056A (en) | 2006-10-26 | 2007-10-26 | Method for checking stator windings of motor or generator |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN101169459B (en) |
| DE (1) | DE102006050551A1 (en) |
| FR (1) | FR2907912A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010033953B4 (en) * | 2010-08-10 | 2013-08-14 | Bombardier Transportation Gmbh | Method for detecting the direction of rotation |
| SI23520A (en) | 2010-10-19 | 2012-04-30 | Univerza v Mariboru Fakulteta za elektrotehniko, računalništvo in informatiko | Tester and the method of testing the direction of rotating and accuracy of stators winding connection of electric motor |
| CN103059547B (en) * | 2013-01-30 | 2015-05-06 | 上海俊尔新材料有限公司 | Electroplating PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy material and preparation method thereof |
| DE102019123406A1 (en) * | 2019-09-02 | 2021-03-04 | Phoenix Contact Gmbh & Co. Kg | Method and device for determining the direction of rotation of a rotating field and hybrid motor starter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2583885A1 (en) * | 1985-06-21 | 1986-12-26 | Commissariat Energie Atomique | Device for measuring a magnetic field gradient using several NMR probes |
| DE19908361A1 (en) * | 1999-02-26 | 2000-09-21 | Klemens Gintner | Magnetoresistive sensor device for detecting rotation rate and rotation direction of rotating object uses magnetic field source attached to object and 2 cooperating sensors providing phase-shifted magnetic field components |
| CN1279052A (en) * | 1999-06-24 | 2001-01-10 | 通用电器横河医疗系统株式会社 | Method and device for measuring inhomogeneous magnetic field, method and device for phase calibration, and magnetic resonance image apparatus |
| DE19940783A1 (en) * | 1999-08-27 | 2001-03-01 | Blocher Motor Gmbh | Control method especially for permanent magnet excited synchronous machines of elevator drives, involves continually matching phase-angles of magnetic field to optimal running conditions of machine |
| CN1319765A (en) * | 2000-03-23 | 2001-10-31 | 松下电器产业株式会社 | Magnetic field sensor |
| US6356079B1 (en) * | 1998-12-14 | 2002-03-12 | Kabushiki Kaisha Toshiba | Phase-shift type magnetic-field sensor using a magnetic substance |
-
2006
- 2006-10-26 DE DE200610050551 patent/DE102006050551A1/en not_active Withdrawn
-
2007
- 2007-10-24 FR FR0758537A patent/FR2907912A1/en not_active Withdrawn
- 2007-10-26 CN CN2007101999179A patent/CN101169459B/en not_active Expired - Fee Related
- 2007-10-26 CN CN2011102251763A patent/CN102360056A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2583885A1 (en) * | 1985-06-21 | 1986-12-26 | Commissariat Energie Atomique | Device for measuring a magnetic field gradient using several NMR probes |
| US6356079B1 (en) * | 1998-12-14 | 2002-03-12 | Kabushiki Kaisha Toshiba | Phase-shift type magnetic-field sensor using a magnetic substance |
| DE19908361A1 (en) * | 1999-02-26 | 2000-09-21 | Klemens Gintner | Magnetoresistive sensor device for detecting rotation rate and rotation direction of rotating object uses magnetic field source attached to object and 2 cooperating sensors providing phase-shifted magnetic field components |
| CN1279052A (en) * | 1999-06-24 | 2001-01-10 | 通用电器横河医疗系统株式会社 | Method and device for measuring inhomogeneous magnetic field, method and device for phase calibration, and magnetic resonance image apparatus |
| DE19940783A1 (en) * | 1999-08-27 | 2001-03-01 | Blocher Motor Gmbh | Control method especially for permanent magnet excited synchronous machines of elevator drives, involves continually matching phase-angles of magnetic field to optimal running conditions of machine |
| CN1319765A (en) * | 2000-03-23 | 2001-10-31 | 松下电器产业株式会社 | Magnetic field sensor |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2000-56000A 2000.02.25 |
| JP特开2005-134169A 2005.05.26 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102360056A (en) | 2012-02-22 |
| FR2907912A1 (en) | 2008-05-02 |
| DE102006050551A1 (en) | 2008-06-26 |
| CN101169459A (en) | 2008-04-30 |
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