CN103630350A - Method for testing load of long stator core - Google Patents
Method for testing load of long stator core Download PDFInfo
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- CN103630350A CN103630350A CN201310666347.5A CN201310666347A CN103630350A CN 103630350 A CN103630350 A CN 103630350A CN 201310666347 A CN201310666347 A CN 201310666347A CN 103630350 A CN103630350 A CN 103630350A
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- long stator
- iron core
- power supply
- stator iron
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Abstract
The invention discloses a method for testing the load of a long stator core. The method comprises the following steps of sequentially arranging magnet exciting coils and magnet yokes above the core at intervals of air gaps so as to form a magnetic field; mounting a tension sensor on each magnet yoke; connecting the magnet exciting coils and an excitation source so that magnetic flux is formed in the magnetic field and attraction is formed; extending the tension sensors by using the attraction; and obtaining the attraction subjected to the long stator core by using the extension of the tension sensors. According to the method for testing the load of the long stator core, a tension structure with adjustable air gaps is adopted, and tension is similar to the actual load. The loading capacity of the long stator core can be obtained by testing the stress state of a long stator.
Description
Technical field
The present invention relates to a kind of load testing method of long stator iron core.
Background technology
Long stator iron core is the most frequently used is to be laid on the track girder of magnetic-levitation train line.While not driving train, long stator iron core does not stress, and is only subject to its Gravitative Loads.While driving train, the linear motor rotor coil on long stator iron core and train forms motor-field, produces tractive force and suspending power, and this power makes train suspend and advance fast, and meanwhile, this power also acts on long stator iron core.Therefore,, in whole long stator iron core life cycle, long stator iron core will be subject to the effect of millions of power.Because the reliability requirement of magnetic suspension train is high, require the type approval test of long stator iron core can simulate the load force-bearing situation moving for 80 years.But with regard to current domestic such analog detection method that also do not have.
Summary of the invention
The object of the invention is in order to overcome the deficiencies in the prior art, a kind of load testing method of long stator iron core is provided, it can be created the force environment of a long stator iron core similar to actual motion and constantly act on long stator iron core, obtains the load-carrying ability of long stator iron core.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of load testing method of long stator iron core, comprises the following steps;
Above iron core, a field coil and yoke are set successively, to form magnetic field interval one air gap;
Pulling force sensor is installed in yoke;
To field coil, connect a field power supply, to form magnetic flux in magnetic field, form suction, this suction stretches pulling force sensor,
Amount of tension by pulling force sensor obtains the suction that long stator iron core is subject to.
The load testing method of above-mentioned long stator iron core, wherein, described field power supply comprises successively a chopper, a power amplifier, a PWM generator, a current controller, a totalizer and the alternating signal generator being connected in series with described field coil, and the power supply of described chopper provides by connecting the mains supply of rectifier; The current feedback terminal of described chopper is connected in described totalizer by a current transformer; The power supply of described alternating signal generator provides after exchanging given power supply stack with one by the given power supply of a direct current.
The load testing method of above-mentioned long stator iron core, wherein, described field coil is on iron-core coil.
The technical scheme of the load testing method of long stator iron core of the present invention, the alternating signal generator that adopts AC and DC to superpose, makes signal be easy to regulate; Adopt PI controller, make exciting current stable; Proportion is made field power supply up to the H type chopper of 100kHz, makes it have high-speed response characteristic; Adopt the adjustable tension structure of air gap, make pulling force similar to real load.By the test of the force-bearing situation of long stator being obtained to the load-carrying ability of long stator iron core.
Accompanying drawing explanation
Fig. 1 is the structural representation of the field power supply that adopts in the load testing method of long stator iron core of the present invention.
Embodiment
In order to understand technical scheme of the present invention better, below by embodiment particularly and be described in detail by reference to the accompanying drawings:
The load testing method of long stator iron core of the present invention, comprises the following steps;
Above iron core, a field coil and yoke are set successively, to form magnetic field interval one air gap;
Pulling force sensor is installed in yoke;
To field coil, connect a field power supply, to form magnetic flux in magnetic field, form suction, this suction stretches pulling force sensor,
Amount of tension by pulling force sensor obtains the suction that long stator iron core is subject to.
Refer to Fig. 1, excitation power supply is connected with field coil 10 by a fuse 2, and this excitation power supply comprises successively a chopper 2, a power amplifier 3, a PWM generator 4, a current controller 5, a totalizer 6 and the alternating signal generator 7 being connected in series with field coil 10; Chopper 2 is the H type chopper that a frequency reaches 100kHz, and its power supply provides by connecting the mains supply of a rectifier 20; Current controller 5 is pi regulator; The current feedback terminal of chopper 2 is connected in totalizer 6 by a current transformer 8; The power supply of alternating signal generator 7 provides after exchanging given power supply 92 stacks with one by the given power supply 91 of a direct current.
The principle of work of the load testing method of long stator iron core of the present invention is: alternating signal generator 7 requires to send alternating signal according to load test, current controller 5 controls according to the instruction of alternating signal generator 65 electric current that puts on field coil 10, in the magnetic field that the magnetic field that energising field coil 10 forms forms at iron-core coil, yoke and long stator iron core, produce magnetic flux, form suction.Owing to there being certain air gap between iron-core coil and long stator iron core, this suction stretches pulling force sensor, its amount of tension has reflected the suction that long stator iron core is subject to, this suction is alternation along with the alternation of the electric current in field coil 10, also follow alternating signal that alternating signal generator 7 sends and alternation, the load-carrying ability of having tested therefrom long stator iron core.
Load testing method for long stator iron core of the present invention adopts the alternating signal generator 7 of alternating current-direct current stack, makes signal be easy to regulate; Current controller 5 adopts PI controller, makes exciting current stable; Chopper 2 proportions are made field power supply up to the H type chopper of 100kHz, make it have high-speed response characteristic; Adopt the adjustable tension structure of air gap, make pulling force similar to real load.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, and be not used as limitation of the invention, as long as within the scope of connotation of the present invention, to the variation of the above embodiment, modification, all will drop within the scope of claims of the present invention.
Claims (3)
1. a load testing method for long stator iron core, is characterized in that, said method comprising the steps of;
Above described iron core, a field coil and yoke are set successively, to form magnetic field interval one air gap;
In described yoke, pulling force sensor is installed;
Connect a field power supply to described field coil, to form magnetic flux in described magnetic field, form suction, this suction stretches described pulling force sensor,
Amount of tension by described pulling force sensor obtains the suction that described long stator iron core is subject to.
2. the load testing method of long stator iron core according to claim 1, it is characterized in that, described field power supply comprises successively a chopper, a power amplifier, a PWM generator, a current controller, a totalizer and the alternating signal generator being connected in series with described field coil, and the power supply of described chopper provides by connecting the mains supply of rectifier; The current feedback terminal of described chopper is connected in described totalizer by a current transformer; The power supply of described alternating signal generator provides after exchanging given power supply stack with one by the given power supply of a direct current.
3. the load testing method of long stator iron core according to claim 1 and 2, is characterized in that, described field coil is on iron-core coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310666347.5A CN103630350A (en) | 2013-12-10 | 2013-12-10 | Method for testing load of long stator core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310666347.5A CN103630350A (en) | 2013-12-10 | 2013-12-10 | Method for testing load of long stator core |
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| Publication Number | Publication Date |
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| CN103630350A true CN103630350A (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310666347.5A Pending CN103630350A (en) | 2013-12-10 | 2013-12-10 | Method for testing load of long stator core |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697614A (en) * | 2015-03-12 | 2015-06-10 | 南车株洲电力机车有限公司 | Magnetically levitated train load information generating system |
| CN109238517A (en) * | 2018-08-27 | 2019-01-18 | 太原理工大学 | A kind of detection device and detection method of anchor axial force |
| CN112781774A (en) * | 2020-12-03 | 2021-05-11 | 江苏洛克电气集团有限公司 | Stator core laminated riveting quality detection method |
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| CN1460866A (en) * | 2003-06-12 | 2003-12-10 | 国家磁浮交通工程技术研究中心 | Long-stator iron core electric performance testing device |
| JP2009142024A (en) * | 2007-12-05 | 2009-06-25 | Toyota Motor Corp | Reluctance motor |
| KR20100092243A (en) * | 2009-02-12 | 2010-08-20 | 엘에스전선 주식회사 | Torque sensor |
| CN102136771A (en) * | 2011-02-15 | 2011-07-27 | 信阳福英纯电动汽车科技有限公司 | Axial superficial magnetic circuit motor |
| CN102435430A (en) * | 2011-11-08 | 2012-05-02 | 济南轨道交通装备有限责任公司 | Loading system for test platform of wind generating set |
| CN203587263U (en) * | 2013-11-20 | 2014-05-07 | 国网上海市电力公司 | Load testing device for long stator iron core |
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2013
- 2013-12-10 CN CN201310666347.5A patent/CN103630350A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1460866A (en) * | 2003-06-12 | 2003-12-10 | 国家磁浮交通工程技术研究中心 | Long-stator iron core electric performance testing device |
| JP2009142024A (en) * | 2007-12-05 | 2009-06-25 | Toyota Motor Corp | Reluctance motor |
| KR20100092243A (en) * | 2009-02-12 | 2010-08-20 | 엘에스전선 주식회사 | Torque sensor |
| CN102136771A (en) * | 2011-02-15 | 2011-07-27 | 信阳福英纯电动汽车科技有限公司 | Axial superficial magnetic circuit motor |
| CN102435430A (en) * | 2011-11-08 | 2012-05-02 | 济南轨道交通装备有限责任公司 | Loading system for test platform of wind generating set |
| CN203587263U (en) * | 2013-11-20 | 2014-05-07 | 国网上海市电力公司 | Load testing device for long stator iron core |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697614A (en) * | 2015-03-12 | 2015-06-10 | 南车株洲电力机车有限公司 | Magnetically levitated train load information generating system |
| CN109238517A (en) * | 2018-08-27 | 2019-01-18 | 太原理工大学 | A kind of detection device and detection method of anchor axial force |
| CN112781774A (en) * | 2020-12-03 | 2021-05-11 | 江苏洛克电气集团有限公司 | Stator core laminated riveting quality detection method |
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Application publication date: 20140312 |