CN103630836B - Track traffic becomes air gap disc linear induction traction electric machine and presents platform mutually at a high speed - Google Patents
Track traffic becomes air gap disc linear induction traction electric machine and presents platform mutually at a high speed Download PDFInfo
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- CN103630836B CN103630836B CN201310631486.4A CN201310631486A CN103630836B CN 103630836 B CN103630836 B CN 103630836B CN 201310631486 A CN201310631486 A CN 201310631486A CN 103630836 B CN103630836 B CN 103630836B
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Abstract
The invention discloses a kind of track traffic change air gap disc linear induction traction electric machine belonging to electric traction drive technical field and present platform mutually at a high speed.This device comprises that disc is secondary, line inductance electromotor is elementary, rotary inductive motor, 1# current transformer, 2# current transformer, umbrella shape shaft coupling, elementary base, secondary brace table, rotary encoder, torque gauge, flywheel.Line inductance electromotor is elementary to be fixed on elementary base; The secondary axle with passing it of disc is rigid to be linked; Secondary brace table is linked by bearing with axle; Rotary encoder is linked by bearing with the axle through it; Umbrella shape shaft coupling, flywheel, torque gauge, rotary inductive motor are successively by shaft coupling string together; 2# current transformer is connected with rotary inductive motor; 1# current transformer is connected with line inductance electromotor is elementary.This device has air gap regulatory function, saves the energy, test electromagnetic force and operating mode comprehensively, test high-speed working condition, volume be little, take up an area less, be applicable to the features such as indoor use.
Description
Technical field
The invention belongs to electric traction drive field, particularly a kind of track traffic change air gap disc linear induction traction electric machine presents platform at a high speed mutually.
Technical background
Current linear electric motors municipal rail train, middle low speed magnetic suspension train etc. all adopt high-power linear induction traction electric machine, and this motor operationally air gap can change.Existing common electric rotating machine air gap generally can not change, and only tests torque value, so when testing common electric rotating machine torque, only need test maintaining under the constant condition of air gap.Linear induction traction electric machine topological structure shows different from the electromagnetic force of common electric rotating machine at three dimensions, the force characteristic testing performance indexes such as linear induction traction electric machine thrust and normal force are not one-dimensional problems, and need can continuous print, the uniform test platform regulating air gap value, when becoming air gap, horizontal thrust and normal force are tested, to predict under the factors such as body oscillating, finally obtain the various performance index of motor under different air gap value.Meanwhile, under traction/braking occasion and specified air gap condition, also need to test the motor characteristic under different operating mode, verify that all whether this motor can meet the requirement of traction/braking curve under each operating mode.So after the manufacture of high-power linear induction traction electric machine completes, follow the torque testing method and apparatus of common electric rotating machine, obviously can not meet the requirement of linear induction traction electric machine.
Therefore, special device each operating mode such as Traction Drive, coasting, regenerative braking to linear induction traction electric machine is needed to simulate, and detect the dynamic perfromance of thrust, normal force, side force simultaneously, the more important thing is and require that air gap can regulate uniformly, conveniently obtain the motor characteristic under different air gap value and various index.Moreover the speed of linear induction traction electric machine is relatively high, if use vehicle-mounted and form that is track, need very large place and investment.
Summary of the invention
For above-mentioned prior art Problems existing, the present invention proposes a kind of track traffic change air gap disc linear induction traction electric machine and presents platform mutually at a high speed, it is characterized in that, this device comprises elementary, the elementary base of line inductance electromotor, secondary, the secondary brace table of disc, umbrella shape shaft coupling, rotary encoder, flywheel, torque gauge, rotary inductive motor, 1# current transformer, 2# current transformer;
Line inductance electromotor is elementary to be fixed on elementary base, and elementary base is fixed on ground;
The secondary axle with passing it of disc is rigid to be linked, and the secondary rotation of disc can be with moving axis to rotate; Secondary brace table is linked by bearing with axle, and axle rotates, and secondary brace table is fixed on ground;
Umbrella shape shaft coupling connects axle and the secondary axle of disc of rotary inductive motor, and rotary encoder is connected with the secondary axle of disc by latch location;
Flywheel, torque gauge, rotary inductive motor are linked together by shaft coupling successively;
The interchange end of 2# current transformer is connected with rotary inductive motor;
The interchange end of 1# current transformer is connected with line inductance electromotor is elementary.
Described disc is secondary is that complex is secondary, comprises the secondary and disc secondary electrical layer of disc; Disc is secondary does high speed rotary motion.
Described disc secondary electrical layer is nonmagnetic layer, is used for strengthening the elementary strength of vortex in the secondary middle generation of high speed circular dish type of line inductance electromotor.
Described elementary base is connected with ground by air gap adjusting device.
Described air gap adjusting device be used for regulating the secondary and line inductance electromotor of disc elementary between air gap value.
Described 1# current transformer and 2# current transformer are AC-DC-AC type current transformer.
Described elementary base and the elementary coupling part of line inductance electromotor install tension-compression sensor additional, for detecting thrust, normal force and side force.
Described tension-compression sensor comprises normal force transducer, thrust pickup and lateral force sensors.
The beneficial effect of the invention:
(1) there is air gap regulatory function, meet the requirement of motor characteristic and performance index under line inductance electromotor needs test different air gap value.
(2) can carry out to the performance of high-power linear pulling motor the full test becoming air gap, be mainly used in the test phase of high-power linear induction traction electric machine product, without the need to changing the topological structure of linear electric motors, just directly the accurate various indexs to produced traction electric machine can detect, thus judge whether the motor produced reaches design standards.
(3) this device is for present mode mutually, has the advantages that efficiency is high, save the energy.
(4) this device is secondary does high speed rotary motion for disc, and measurement condition is comprehensive.Line inductance electromotor can be operated in any operating mode, comprising: traction, braking, regeneration etc.
(5) the present invention proposes to use disc secondary, have volume little, take up an area less, high, the fully automatic integral of small investment, efficiency, be applicable to the features such as indoor use.
Accompanying drawing explanation
Fig. 1 is that track traffic change air gap disc linear induction traction electric machine presents platform at a high speed mutually;
To be that line inductance electromotor is elementary illustrate with secondary location Fig. 2;
Fig. 3 is thrust pickup, normal force transducer and air gap adjusting device scheme of installation;
Fig. 4 is lateral force sensors scheme of installation;
Wherein, 1 be elementary base, 2 for line inductance electromotor is elementary, 3 be secondary brace table, 4 for disc is secondary, 5 be umbrella shape shaft coupling, 6 be rotary encoder, 7 be flywheel, 8 be torque gauge, 9 be disc secondary electrical layer, 13 be thrust pickup, 14 be normal force transducer, 15 be air gap adjusting device, 16 be lateral force sensors for rotary inductive motor, 10 to be 1# current transformer, 11 be 2# current transformer, 12.
Embodiment
Content of the present invention is set forth further below in conjunction with drawings and Examples.
Be illustrated in figure 1 track traffic change air gap disc linear induction traction electric machine and present platform mutually at a high speed; This device is elementary 2 by elementary base 1, line inductance electromotor, secondary brace table 3, disc are secondary 4, umbrella shape shaft coupling 5, rotary encoder 6, flywheel 7, torque gauge 8, rotary inductive motor 9,1# current transformer 10,2# current transformer 11 form.
(1) elementary base 1.Elementary base 1, for fixing line inductance electromotor elementary 2, installs tension-compression sensor additional at line inductance electromotor elementary 2 and the coupling part of elementary base 1 simultaneously.Tension-compression sensor comprises thrust pickup 13, normal force transducer 14 and lateral force sensors 16, for detecting thrust, normal force and side force.Elementary base 1 is connected with ground by air gap adjusting device 15, air gap value between line inductance electromotor elementary 2 and disc secondary 4 can be regulated by air gap adjusting device 15, meet the force characteristic of line inductance electromotor under different air gap and measure the acquisition with other performance index.
(2) line inductance electromotor elementary 2.Line inductance electromotor elementary 2, without the need to special processing, is still pancake, directly can uses the finished product of production, and it is installed on just to disc secondary electrical layer 12 one side, as shown in Figure 2.This line inductance electromotor elementary 2 is fixed on elementary base 1, and is powered by AC-DC-AC type current transformer, thus produces travelling-magnetic-field, drives disc secondary 4 to rotate.
(3) secondary brace table 3.Secondary brace table 3 is linked by bearing with the axle through disc secondary 4, and axle rotates, and secondary brace table 3 is fixed on ground.
(4) disc secondary 4.Disc secondary 4 is that complex is secondary, comprises the secondary and disc secondary electrical layer 12 of disc; Disc secondary electrical layer 12 is nonmagnetic layer, is used for strengthening the strength of vortex that produces in high speed circular dish type secondary 4 of line inductance electromotor elementary 2.Disc secondary 4 links with the axle passing it is rigid, and secondary 4 rotations of disc can be with moving axis to rotate.When proving installation works, disc secondary 4 does high speed rotary motion, and equivalence becomes elementary and does high-speed motion, secondary fixing situation.
(5) umbrella shape shaft coupling 5.Umbrella shape shaft coupling 5 connects the axle of rotary inductive motor 9 and the axle of disc secondary 4, axle through disc secondary 4 is the rotation of vertical direction, axle through rotary inductive motor 9 is that horizontal direction rotates, and the effect of umbrella shape shaft coupling 5 horizontal direction is transferred in the rotation of vertical direction rotate.
(6) rotary encoder 6.Rotary encoder 6 is connected with the axle of disc secondary 4, for the rotating speed of test disks shape secondary 4 by latch location.
(7) flywheel 7.Flywheel 7 can store or release energy, and can suppress the fluctuation of speed, the stability of rotation of keeping system.
(8) torque gauge.The size of moment of torsion between test line inductance electromotor and rotary inductive motor 9, for the correctness of indirect inspection checking thrust pickup 13 test result.
(9) rotary inductive motor 9.Rotary inductive motor 9 is connected in turn by shaft coupling and umbrella shape shaft coupling, flywheel, torque gauge.The torque of disc secondary 4 is as prime motive power drives rotary inductive motor 9, the duty of rotary inductive motor 9 is controlled by 2# current transformer 11, make it work in the states such as electronic, generating, thus line inductance electromotor can be simulated in traction, regenerative braking state and different loads, different operating mode.When line inductance electromotor/rotary inductive motor traction, rotary inductive motor/line inductance electromotor is in generating state, by electric energy feedback electrical network.
(10) 1# current transformers 10,2# current transformer 11.1# current transformer 10 and 2# current transformer 11 adopt AC-DC-AC shape current transformer.The interchange end of 1# current transformer 10 is connected with line inductance electromotor elementary 2, for driving line inductance electromotor elementary 2, can set this machine operation in traction or generating state, coming simulating vehicle traction and regenerative braking operating mode.Meanwhile, can in the rotating speed of often kind of regulating working conditions disc secondary 4 and torque, to different traction/braking curves.The interchange end of 2# current transformer 11 is connected with rotary inductive motor 9, for driving rotary inductive motor 9.When line inductance electromotor works in traction/regenerative braking state, control 2# current transformer 11, make rotary inductive motor 9 work in regenerative braking/traction state, the load/prime motor torque of simulation line inductance electromotor.
This device has two kinds of duties:
(1) linear induction traction electric machine traction state
During test linear induction traction electric machine traction working condition, need 1# current transformer 10 to drive line inductance electromotor elementary 2, make it work in the state that will test; 2# current transformer 11 reads the rotating speed of disc secondary 4 simultaneously, calculate corresponding frequency, loading condition according to setting draws revolutional slip, according to slip frequency, control the electric voltage frequency that 2# current transformer 11 applies lower than speed-frequency, make rotary inductive motor 9 work in generating state, the load of simulation line inductance electromotor, simultaneously by electric energy feedback electrical network.
(2) linear induction traction electric machine regenerative braking state
During test linear induction traction electric machine regenerative braking operating mode, 2# current transformer 11 is needed to drive rotary inductive motor 9, make it work in velocity amplitude when regenerative braking wanted by linear induction traction electric machine, now line inductance electromotor elementary 2 is dragged to this speed by rotary inductive motor 9; 1# current transformer 10 reads the rotating speed of disc secondary 4, calculate corresponding frequency, the revolutional slip of the confidential operation of linear induction is drawn according to the loading condition that will set, the electric voltage frequency lower than slip frequency is applied according to slip frequency controlled 1# current transformer 10, make line inductance electromotor work in generating state, the electric energy sent is responsible for its feedback grid by 1# current transformer 10.
Be illustrated in figure 3 thrust pickup, normal force transducer and air gap adjusting device scheme of installation.
Detection to normal force: elementary base 1 is connected by normal force transducer 14 with line inductance electromotor elementary 2, when line inductance electromotor elementary 2 is subject to the normal force effect of disc secondary 4, just detected by normal force transducer 14, correct as standard signal by transmitter simultaneously, send into harvester or oscillograph etc., carry out recording or showing.
Detection to thrust: the elementary 2 longitudinal two ends of line inductance electromotor connect respectively by two thrust pickups 13, when disc secondary 4 is rotated, the elementary 2 longitudinal two ends of line inductance electromotor can receive the thrust of formed objects simultaneously, then this thrust can be detected by these two thrust pickups 13, correct as standard signal by transmitter simultaneously, send into harvester or oscillograph etc., carry out recording or showing.
Adjustment to air gap: elementary base 1 is connected with ground by air gap adjusting device 15, air gap value between line inductance electromotor elementary 2 and disc secondary 4 can be regulated by this air gap adjusting device 15, meet the force characteristic of line inductance electromotor under different air gap and measure the acquisition with other performance index.
Fig. 4 is lateral force sensors scheme of installation.
Detection to side force: elementary 2 transverse ends of line inductance electromotor connect respectively by four lateral force sensors 16, when disc secondary 4 is rotated, elementary 2 transverse ends of line inductance electromotor can receive the thrust of formed objects simultaneously, then this thrust can be detected by these four lateral force sensors 16, correct as standard signal by transmitter simultaneously, send into harvester or oscillograph etc., carry out recording or showing.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (8)
1. track traffic change air gap disc linear induction traction electric machine presents platform at a high speed mutually, it is characterized in that, comprise elementary, the elementary base of line inductance electromotor, secondary, the secondary brace table of disc, umbrella shape shaft coupling, rotary encoder, flywheel, torque gauge, rotary inductive motor, 1# current transformer, 2# current transformer;
Line inductance electromotor is elementary to be fixed on elementary base, and elementary base is fixed on ground;
The secondary axle with passing it of disc is rigid to be linked, and the secondary rotation of disc can be with moving axis to rotate; Secondary brace table is linked by bearing with axle, and axle rotates, and secondary brace table is fixed on ground;
Umbrella shape shaft coupling connects axle and the secondary axle of disc of rotary inductive motor, and rotary encoder is connected with the secondary axle of disc by latch location;
Flywheel, torque gauge, rotary inductive motor are linked together by shaft coupling successively;
The interchange end of 2# current transformer is connected with rotary inductive motor;
The interchange end of 1# current transformer is connected with line inductance electromotor is elementary.
2. track traffic becomes air gap disc linear induction traction electric machine and presents platform mutually at a high speed according to claim 1, and it is characterized in that, described disc is secondary be that complex is secondary, comprises disc secondary with disc secondary electrical layer; Disc is secondary does high speed rotary motion.
3. track traffic change air gap disc linear induction traction electric machine presents platform at a high speed mutually according to claim 2, it is characterized in that, described disc secondary electrical layer is nonmagnetic layer, is used for strengthening the elementary strength of vortex in the secondary middle generation of high speed circular dish type of line inductance electromotor.
4. track traffic change air gap disc linear induction traction electric machine presents platform at a high speed mutually according to claim 1, and it is characterized in that, described elementary base is connected with ground by air gap adjusting device.
5. track traffic becomes air gap disc linear induction traction electric machine and presents platform mutually at a high speed according to claim 4, it is characterized in that, described air gap adjusting device be used for regulating the secondary and line inductance electromotor of disc elementary between air gap value.
6. track traffic change air gap disc linear induction traction electric machine presents platform at a high speed mutually according to claim 1, and it is characterized in that, described 1# current transformer and 2# current transformer are AC-DC-AC type current transformer.
7. track traffic change air gap disc linear induction traction electric machine presents platform at a high speed mutually according to claim 1, it is characterized in that, described elementary base and the elementary coupling part of line inductance electromotor install tension-compression sensor additional, for detecting thrust, normal force and side force.
8. track traffic change air gap disc linear induction traction electric machine presents platform at a high speed mutually according to claim 7, and it is characterized in that, described tension-compression sensor comprises normal force transducer, thrust pickup and lateral force sensors.
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| CN201310631486.4A CN103630836B (en) | 2013-11-28 | 2013-11-28 | Track traffic becomes air gap disc linear induction traction electric machine and presents platform mutually at a high speed |
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| CN201310631486.4A CN103630836B (en) | 2013-11-28 | 2013-11-28 | Track traffic becomes air gap disc linear induction traction electric machine and presents platform mutually at a high speed |
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| CN103630836B true CN103630836B (en) | 2016-02-24 |
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| CN106950496A (en) * | 2017-03-20 | 2017-07-14 | 湖南中通电气股份有限公司 | A kind of linear asynchronous tractive motor hanging simulation test device of track traffic |
| CN110763491B (en) * | 2019-10-29 | 2021-05-04 | 北京交通大学 | 8 word coil performance integrated test platform |
| CN112230145B (en) * | 2020-10-16 | 2024-04-19 | 中车永济电机有限公司 | Modularized linear induction motor rotation test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025435A (en) * | 2007-03-13 | 2007-08-29 | 北京交通大学 | Linear motor performance detecting device for track traffic |
| CN102033210A (en) * | 2009-09-30 | 2011-04-27 | 田京涛 | Air-gap field detecting device of alternating-current generator and application thereof in state monitoring and control method of alternating-current generator |
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| JP4657048B2 (en) * | 2005-07-28 | 2011-03-23 | 三菱電機株式会社 | Single-phase induction machine air gap eccentricity detection device and air gap eccentricity inspection method |
| US7343828B2 (en) * | 2006-05-30 | 2008-03-18 | The Coca-Cola Company | Tape fed miniature air gap inspection crawler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101025435A (en) * | 2007-03-13 | 2007-08-29 | 北京交通大学 | Linear motor performance detecting device for track traffic |
| CN102033210A (en) * | 2009-09-30 | 2011-04-27 | 田京涛 | Air-gap field detecting device of alternating-current generator and application thereof in state monitoring and control method of alternating-current generator |
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