CN1235058C - Long-stator iron core electric performance testing device - Google Patents
Long-stator iron core electric performance testing device Download PDFInfo
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- CN1235058C CN1235058C CN 03129185 CN03129185A CN1235058C CN 1235058 C CN1235058 C CN 1235058C CN 03129185 CN03129185 CN 03129185 CN 03129185 A CN03129185 A CN 03129185A CN 1235058 C CN1235058 C CN 1235058C
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- iron core
- long stator
- stator iron
- electric performance
- control system
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- Iron Core Of Rotating Electric Machines (AREA)
- Measuring Magnetic Variables (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Linear Motors (AREA)
Abstract
The present invention relates to a device for testing the electric performance of an iron core with a long stator, which is characterized in that the device is provided with a magnetic induction block, a magnetic flux transducer positioned on the magnetic induction block, a three-phase armature winding capable of being inserted in a tooth space of the iron core block with a long stator needing to be tested, and a test control system which is respectively electrically connected with the magnetic flux transducer and the three-phase armature winding and comprises an input transformer, a rectifier, an inverter and a three-phase current closed-loop control system. The present invention solves the technical problem existing in the test of the electric performance of the iron core with a long stator.
Description
Technical field:
The invention relates to surveying instrument, particularly about long stator iron core electric performance test device.
Background technology:
High-speed maglev train just moves towards actual use from theoretical research, and the driving power that adopts is long stator linear synchronous motor at present.The stator winding segmentation of this long stator linear synchronous motor is laid along the guide rail of the left and right sides, and each long stator winding segments all includes several tactic long stator iron core pieces, each long stator iron core piece is provided with the individual teeth groove of 3 * n (n is the natural number greater than 2), and the threephase stator winding then is embedded in above-mentioned teeth groove.During work,, make it produce running power with being provided with under the condition that ON TRAINS exciting magnet keeps a constant distance (being the magnetic levitation air gap), traction or promote train and advance to the DC current of above-mentioned threephase stator winding input frequency conversion.For example De Guo high-speed maglev train Transrapid system when its magnetic levitation air gap is 10mm, does not consider the effect of field copper, when the threephase armature winding current is 1200 ampere-hours, can guarantee to obtain train required specified traction or propulsion power.In addition, all other electric properties such as the loss of long stator iron core piece, thermal value, magnetization curve also have significant impact to the normal operation and the operating cost of magnetic suspension train.As seen the electric property of long stator iron core piece, particularly its magnetic flux under rated condition is one of key factor that guarantees the normal operation of magnetic suspension train, and the consumption of long stator iron core piece is very huge, how could guarantee that the electric property of each long stator iron core piece adheres to specification? and present present situation does not have a checkout equipment to come the electric property of long stator iron core piece is measured exactly as yet.
Summary of the invention:
The objective of the invention is to solve technical matters about the long stator iron core electric performance test.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
A kind of long stator iron core electric performance test device of long-stator linear motor is characterized in that: be arranged on long stator iron core top the magnetic induction piece, be positioned at magnetic flux transducer on the above-mentioned magnetic induction piece, can be embedded into the threephase armature winding of long stator iron core piece teeth groove to be measured, the Measurement and Control System that comprises input transformer, rectifier, inverter and three-phase current closed-loop control system that is connected with the threephase armature winding electric with above-mentioned magnetic flux transducer respectively.
Above-mentioned long stator iron core electric performance test device is characterized in that: this Measurement and Control System three phase sine constant current source that to be a current effective value change between 0～400 hertz at 0～300 ampere, frequency.
Above-mentioned long stator iron core electric performance test device is characterized in that: the airspace between this magnetic induction piece and the long stator iron core piece to be measured is 1mm.
Above-mentioned long stator iron core electric performance test device is characterized in that: this three-phase current closed-loop control system is high speed digital signal processor DSP.
Above-mentioned long stator iron core electric performance test device is characterized in that: this magnetic induction piece is to be made or lamination is made by ferromagnetics material integral body.
Proposition of the present invention, make the detection of the electric property of long stator iron core piece become attainable work, can before line arrangement, nonconforming long stator iron core piece be rejected, or press performance classification, to guarantee the line arrangement quality, reduce the expense of laying, reduce debug time, thereby guarantee the normal operation of train long stator linear synchronous motor at last.
Description of drawings:
Fig. 1 is a synoptic diagram of the present invention.
Fig. 2 is the wiring diagram of Measurement and Control System among the present invention.
Embodiment:
See also Fig. 1.The present invention is provided with magnetic induction piece 1, magnetic flux transducer 2, threephase armature winding 3 and Measurement and Control System 5.Magnetic induction piece 1 is whole ferromagnetics material; Or form by the ferromagnetics material lamination of sheet, for example by silicon steel plate packing.Magnetic flux transducer 2 is a kind of magnetic flux transducers that utilize Hall effect, and it is arranged on the magnetic induction piece 1, and its output terminal is electrically connected with Measurement and Control System 5 with lead.Three-phase (A, B, C) armature winding 3 one terminal shortcircuits, the other end is electrically connected with Measurement and Control System 5 respectively.Measurement and Control System 5 (referring to Fig. 2) comprises transformer 51, rectifier 52, inverter 53 and three-phase current closed-loop control system 55, the three phase sine constant current source that to be a kind of current effective value change between 0～400 hertz at 0～300 ampere, frequency.The static type inverter of forming by solid-state devices such as thyristor, electric capacity that inverter 53 adopts, the output of its three-phase is connected with A, B, C in threephase armature winding 3 other ends respectively, and its control end then is connected with three-phase current closed-loop control system 55 relevant interfaces.Three-phase current closed-loop control system 54 is a kind of high speed digital signal processor DSP, and except that with inverter 53 is connected, the output terminal of magnetic flux transducer 2 also is connected on its corresponding interface.Measurement and Control System 5 also be provided with three-phase current given/set and display device 56 and three-phase current feedback device 54, they are connected with the relevant interface of three-phase current closed-loop control system 55 respectively.
Before the measurement, earlier threephase armature winding 3 setting-ins are gone in the teeth groove of long stator iron core piece 4 to be measured, again magnetic induction piece 1 is placed on long stator iron core piece 4 tops, make the airspace that has 1mm between it.Give the threephase armature winding 3 energisings by the amplitude and the frequency of Measurement and Control System 5 setting three-phase currents then, can measure the air-gap flux amount by magnetic flux transducer 2, thereby calculate its magnetization curve; By being arranged on some temperature sensor measurement temperature rises and the Temperature Distribution situation on the long stator iron core; Electric property when measure calculating different operating mode such as magnetic hysteresis and eddy current loss by the power meter that is installed in three phase winding ends of incoming cables.In order to guarantee that magnetic strength piece 1 and long stator iron core piece 4 to be measured at a distance of the airspace of 1mm, can be provided with the fixed mount of being made by nonmagnetic substance (for example copper, aluminium, timber etc.) with common framed structure.Magnetic induction piece 1 is fixed on it, and be positioned on the long stator iron core piece 4, just can operate easily.
Claims (7)
1, a kind of long stator iron core electric performance test device of long stator synchronous linear motor is characterized in that: be arranged on long stator iron core top the magnetic induction piece, be positioned at magnetic flux transducer on the above-mentioned magnetic induction piece, can be embedded into the threephase armature winding of long stator iron core piece teeth groove to be measured, the Measurement and Control System that comprises input transformer, rectifier, inverter and three-phase current closed-loop control system that is connected with the threephase armature winding electric with above-mentioned magnetic flux transducer respectively.
2, long stator iron core electric performance test device according to claim 1 is characterized in that: this Measurement and Control System three phase sine constant current source that to be a current effective value change between 0～400 hertz at 0～300 ampere, frequency.
3, long stator iron core electric performance test device according to claim 1 is characterized in that: the airspace between this magnetic induction piece and the long stator iron core piece to be measured is 1mm.
4, long stator iron core electric performance test device according to claim 2 is characterized in that: the airspace between this magnetic induction piece and the long stator iron core piece to be measured is 1mm.
5, according to claim 1,2,3 or 4 described long stator iron core electric performance test devices, it is characterized in that: this magnetic induction piece is to be made or lamination is made by ferromagnetics material integral body.
6, according to claim 1,2,3 or 4 described long stator iron core electric performance test devices, it is characterized in that: this three-phase current closed-loop control system is high speed digital signal processor DSP.
7, long stator iron core electric performance test device according to claim 5, it is characterized in that: this three-phase current closed-loop control system is high speed digital signal processor DSP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03129185 CN1235058C (en) | 2003-06-12 | 2003-06-12 | Long-stator iron core electric performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03129185 CN1235058C (en) | 2003-06-12 | 2003-06-12 | Long-stator iron core electric performance testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1460866A CN1460866A (en) | 2003-12-10 |
| CN1235058C true CN1235058C (en) | 2006-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03129185 Expired - Fee Related CN1235058C (en) | 2003-06-12 | 2003-06-12 | Long-stator iron core electric performance testing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN1235058C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136809B (en) * | 2011-03-31 | 2013-07-31 | 上海磁浮交通发展有限公司 | Urban rail maglev train traction converter output device |
| US8823412B2 (en) * | 2012-03-06 | 2014-09-02 | Siemens Energy, Inc. | Device and method for inspection of a stator core of an electrical machine |
| CN103630350A (en) * | 2013-12-10 | 2014-03-12 | 国网上海市电力公司 | Method for testing load of long stator core |
| CN108872890B (en) * | 2018-04-02 | 2021-06-08 | 江门日野电机有限公司 | Device and method for measuring performance of annular iron core of motor |
| CN109541461B (en) * | 2018-10-31 | 2020-10-09 | 重庆大学 | Permanent magnet synchronous motor eccentric fault diagnosis method based on magnetic field distribution monitoring |
-
2003
- 2003-06-12 CN CN 03129185 patent/CN1235058C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1460866A (en) | 2003-12-10 |
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Owner name: TONGJI UNIVERSITY Free format text: FORMER OWNER: NATIONAL RESEARCH CENTER OF MAGNETIC SUSPENSION TRANSPORTATION ENGINEERING TECHN Effective date: 20150514 |
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Effective date of registration: 20150514 Address after: 200120 Shanghai City, Yangpu District Siping Road No. 1239 Patentee after: Tongji University Patentee after: Institute of Electrical Engineering of the Chinese Academy of Sciences Address before: 201204 Pudong New Area, Longyang Road, No. 2520, Patentee before: National Research Center of Magnetic Suspension Transportation Engineering Techn Patentee before: Institute of Electrical Engineering of the Chinese Academy of Sciences |
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