CN103616638B - The performance test of track traffic drum-shape linear induction traction electric machine presents device mutually - Google Patents
The performance test of track traffic drum-shape linear induction traction electric machine presents device mutually Download PDFInfo
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- CN103616638B CN103616638B CN201310631984.9A CN201310631984A CN103616638B CN 103616638 B CN103616638 B CN 103616638B CN 201310631984 A CN201310631984 A CN 201310631984A CN 103616638 B CN103616638 B CN 103616638B
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Abstract
The invention belongs to electric traction drive technical field, particularly the performance test of a kind of track traffic drum-shape linear induction traction electric machine presents device mutually.This device comprises that drum-shape is secondary, arc line inductance electromotor is elementary, rotary inductive motor, 1# current transformer, 2# current transformer, flywheel shaft coupling, elementary base, rotary encoder, torque gauge.Arc line inductance electromotor is elementary to be fixed on elementary base, rotary encoder is installed on the secondary side of drum-shape, rotary encoder, drum-shape are secondary, flywheel shaft coupling, torque gauge, rotary inductive motor are cascaded by shaft coupling, the interchange end of 2# current transformer is connected with rotary inductive motor, and the interchange end of 1# current transformer is connected with arc line inductance electromotor is elementary.This device have efficiency high, save the energy, measurement condition comprehensively, test high-speed working condition, test electromagnetic force comprehensively, without the need to test rear conversion, volume 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 technical field, particularly the performance test of a kind of track traffic drum-shape linear induction traction electric machine presents device mutually.
Background technology
Current linear electric motors municipal rail train, middle low speed magnetic suspension train etc. all adopt high-power linear induction traction electric machine.Compared with common electric rotating machine, this motor has different topological structures, and therefore this motor is different from common electric rotating machine in three-dimensional electromagnetic force, and this motor has 3 D electromagnetic power: horizontal thrust, normal force and side force.Only need during characteristic test to common electric rotating machine to test torque, but when the characteristic of linear induction traction electric machine is tested, there has been proposed higher technical requirement, testing level thrust, normal force, the side force while of needs.Meanwhile, in Traction Drive occasion, also need to test the motor characteristic under different operating mode, verify whether this motor can meet the requirement of traction curve under each operating mode.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, how test is carried out to motor force characteristic performance index and become subject matter.Therefore, need the dynamic perfromance of special device to the horizontal thrust of linear induction traction electric machine, normal force, side force to detect, also will simulate each operating modes such as the Traction Drive of linear induction traction electric machine, inertia, regenerative brakings.
This device is by carrying out minimum distortion to high-power linear induction traction electric machine, arcuate shape is changed over by line inductance electromotor is elementary by general writing board shape, namely on this proving installation, directly can test out the 3 D electromagnetic power of this motor under specified air gap, and the performance index under different operating mode, without the need to result equivalence is converted.
Summary of the invention
The present invention is directed to the problems referred to above, propose the performance test of a kind of track traffic drum-shape linear induction traction electric machine and present device mutually.
It is characterized in that, this device is secondary by drum-shape, arc line inductance electromotor is elementary, rotary inductive motor, 1# current transformer, 2# current transformer, flywheel shaft coupling, elementary base, rotary encoder, torque gauge forms;
Arc line inductance electromotor is elementary to be fixed on elementary base;
Rotary encoder is installed on the secondary side of drum-shape;
Rotary encoder, drum-shape are secondary, flywheel shaft coupling, torque gauge, rotary inductive motor are cascaded 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 arc line inductance electromotor is elementary.
Described drum-shape is secondary is that complex is secondary, and when proving installation works, drum-shape is secondary does high speed rotary motion.
The radian that described arc line inductance electromotor is elementary and drum-shape is secondary matches, namely the center of circle needs to overlap.
By drum-shape secondary and arc line inductance electromotor elementary between width of air gap be set as the rated operating value of linear induction traction electric machine.
Described elementary base and the elementary coupling part of arc line inductance electromotor install tension-compression sensor additional.
Described tension-compression sensor comprises normal force transducer, thrust pickup and lateral force sensors.
Described 1# current transformer and 2# current transformer are AC-DC-AC type current transformer.
The beneficial effect of the invention:
(1) efficiency high, save the energy.This device, for present mode mutually, is applicable to the test of high-power line inductance electromotor, only have≤electric energy of 10% for test, the electric energy feedback of >=90% is to electrical network;
(2) measurement condition is comprehensive.Arc line inductance electromotor can be operated in any operating mode, comprising: traction, braking, regeneration etc.;
(3) high-speed working condition is tested.This device is secondary does high speed rotary motion for cylindrical shape, the higher speed of a motor vehicle that can require in analog orbit traffic;
(4) electromagnetic force is tested comprehensive.The all electromagnetic force characteristics of arc line inductance electromotor, comprising: horizontal thrust, normal force, side force etc. all can be tested;
(5) without the need to testing rear conversion.The detection of apparatus design under specified air gap, testing result is converted without the need to equivalence, directly can apply;
(6) speed due to linear induction traction electric machine is relatively high, uses vehicle-mounted and form that is track, needs very large place and investment, this device have volume little, take up an area less, be applicable to the features such as indoor use.
Accompanying drawing explanation
Fig. 1 is that apparatus structure schematic diagram is presented in the performance test of drum-shape linear induction traction electric machine mutually;
Fig. 2 is the elementary structural map of arc line inductance electromotor;
Fig. 3 is arc line inductance electromotor structural side view;
Wherein, 1 be elementary base, 2 for arc line inductance electromotor is elementary, 3 be rotary encoder, 4 for drum-shape is secondary, 5 be flywheel shaft coupling, 6 for torque gauge revolve, 7 for rotary inductive motor, 8 to be 1# current transformer, 9 be 2# current transformer, 10 be thrust pickup, 11 be normal force transducer, 12 nonmagnetic layers, 13 for fixing important actor, 14 be lateral force sensors.
Embodiment
Content of the present invention is set forth further below in conjunction with drawings and Examples.
Fig. 1 is that apparatus structure schematic diagram is presented in the performance test of drum-shape linear induction traction electric machine mutually.This device is elementary 2 by elementary base 1, arc line inductance electromotor, rotary encoder 3, drum-shape are secondary 4, flywheel shaft coupling 5, torque gauge 6, rotary inductive motor 7,1# current transformer 8,2# current transformer 9 form.Arc line inductance electromotor elementary 2 is fixed on elementary base 1, and radian and the drum-shape secondary 4 of arc line inductance electromotor elementary 2 match, and namely the center of circle overlaps; There is air gap between arc line inductance electromotor elementary 2 and drum-shape secondary 4, width of air gap is set as the rated operating value of linear induction traction electric machine; Rotary encoder 3 is installed on secondary 4 sides of drum-shape; Rotary encoder 3, drum-shape are secondary 4, flywheel shaft coupling 5, torque gauge 6, rotary inductive motor 7 are cascaded by shaft coupling successively; 1# current transformer 8 and 2# current transformer 9 are AC-DC-AC type current transformer, and the interchange end of 1# current transformer 8 is connected with arc line inductance electromotor elementary 2; The interchange end of 2# current transformer 9 is connected with rotary inductive motor 7.Wherein, drum-shape secondary 4 is that complex is secondary, and when proving installation works, drum-shape secondary 4 does high speed rotary motion.The secondary steel plate comprising thick layer 25mm of complex, the aluminium sheet of thick layer 7mm; Aluminium sheet is in the face of arc line inductance electromotor elementary 2, and steel plate is back to arc line inductance electromotor elementary 2.
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, drive arc line inductance electromotor elementary 2 with 1# current transformer 8, thus produce travelling-magnetic-field, drive drum-shape secondary 4 to do high speed rotary motion, make arc line inductance electromotor elementary 2 work in traction state, carry out simulating vehicle traction working condition; Simultaneously 2# current transformer 9 reads the rotating speed of the drum-shape detected by rotary encoder 3 secondary 4 and torque gauge 6 transmits the secondary torque of drum-shape come, calculate corresponding frequency, loading condition according to setting draws slip frequency, the electric voltage frequency lower than speed-frequency is applied according to slip frequency controlled 2# current transformer 9, rotary inductive motor 7 is made to work in generating state, the load of simulation linear induction traction electric machine, the electric energy feedback electrical network simultaneously stored secondary for drum-shape 4 with flywheel shaft coupling 5.
(2) linear induction traction electric machine regenerative braking state
During test linear induction traction electric machine regenerative braking operating mode, drive rotary inductive motor 7 with 2# current transformer 9, make it work in Traction Drive state; 1# current transformer 8 reads the rotating speed of the drum-shape secondary 4 be stored in rotary encoder 3 simultaneously, calculate corresponding speed-frequency, loading condition according to setting draws slip frequency, according to slip frequency, control the electric voltage frequency that 1# current transformer 8 applies lower than slip frequency, linear induction traction electric machine is made to work in generating state, i.e. regenerative braking state.
Fig. 2 is the elementary structural map of arc line inductance electromotor, and this device can detect thrust and normal force.Wherein, thrust pickup 10, normal force transducer 11 are tension-compression sensor.Elementary base 1 is connected by normal force transducer 11 with arc line inductance electromotor elementary 2, when arc line inductance electromotor elementary 2 is subject to the normal force effect of drum-shape secondary 4, detected by normal force transducer 11, correct as standard signal by transmitter simultaneously, send into harvester or oscillograph etc., carry out recording or showing.
The elementary 2 longitudinal two ends of arc line inductance electromotor connect respectively by two thrust pickups 10, when drum-shape secondary 4 rotates, arc line inductance electromotor elementary 2 can be subject to the thrust of formed objects simultaneously, then this thrust can be detected by these two thrust pickups 10, correct as standard signal by transmitter simultaneously, send into harvester or oscillograph etc., carry out recording or showing.
Nonmagnetic layer 12 is made up of copper or aluminum, and main effect is the strength of vortex strengthening arc line inductance electromotor elementary 2 generation in drum-shape secondary 4.
Fig. 3 is the elementary structural side view of arc line inductance electromotor, and this device can detect side force.Be connected by lateral force sensors 14 (tension-compression sensor) between elementary base 1 with fixing important actor 13, elementary base 1 and the overall linear bearing that uses of arc line inductance electromotor elementary 2 move horizontally, arc line inductance electromotor elementary 2 and drum-shape secondary 4 stagger certain distance, thus produce the side force of replying, this side force is measured by lateral force sensors 14, corrected 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 (7)
1. the performance test of track traffic drum-shape linear induction traction electric machine presents device mutually, it is characterized in that, this device is secondary by drum-shape, arc line inductance electromotor is elementary, rotary inductive motor, 1# current transformer, 2# current transformer, flywheel shaft coupling, elementary base, rotary encoder, and torque gauge forms;
Arc line inductance electromotor is elementary to be fixed on elementary base;
Rotary encoder is installed on the secondary side of drum-shape;
Rotary encoder, drum-shape are secondary, flywheel shaft coupling, torque gauge, rotary inductive motor are cascaded 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 arc line inductance electromotor is elementary.
2. the performance test of track traffic drum-shape linear induction traction electric machine presents device mutually according to claim 1, it is characterized in that, described drum-shape is secondary is that complex is secondary, and when proving installation works, drum-shape is secondary does high speed rotary motion.
3. the performance test of track traffic drum-shape linear induction traction electric machine presents device mutually according to claim 1, it is characterized in that, the radian that described arc line inductance electromotor is elementary and drum-shape is secondary matches, and namely the center of circle needs to overlap.
4. the performance test of track traffic drum-shape linear induction traction electric machine presents device mutually according to claim 1, it is characterized in that, by drum-shape secondary and arc line inductance electromotor elementary between width of air gap be set as the rated operating value of linear induction traction electric machine.
5. the performance test of track traffic drum-shape linear induction traction electric machine presents device mutually according to claim 1, it is characterized in that, described elementary base and the elementary coupling part of arc line inductance electromotor install tension-compression sensor additional.
6. the performance test of track traffic drum-shape linear induction traction electric machine presents device mutually according to claim 5, it is characterized in that, described tension-compression sensor comprises normal force transducer, thrust pickup and lateral force sensors.
7. the performance test of track traffic drum-shape linear induction traction electric machine presents device mutually according to claim 1, it is characterized in that, described 1# current transformer and 2# current transformer are AC-DC-AC type current transformer.
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| CN103616638B true CN103616638B (en) | 2016-01-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105116260B (en) * | 2015-09-07 | 2017-10-17 | 西南交通大学 | A kind of DC traction substation regenerative electric energy utilizes pilot system |
| 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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