CN220064308U - Traction motor test system and test bed thereof - Google Patents
Traction motor test system and test bed thereof Download PDFInfo
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- CN220064308U CN220064308U CN202320682778.XU CN202320682778U CN220064308U CN 220064308 U CN220064308 U CN 220064308U CN 202320682778 U CN202320682778 U CN 202320682778U CN 220064308 U CN220064308 U CN 220064308U
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Abstract
The utility model discloses a traction motor test system, which comprises a traction motor, a transformer and a frequency converter, wherein the transformer and the frequency converter are electrically connected with the traction motor in a matched mode, the transformer and the frequency converter are arranged in parallel, one end of the transformer is electrically connected with a main power supply, the other end of the transformer is electrically connected with the traction motor, and independent control switches are arranged on the transformer and the frequency converter; one end of the transformer, which is connected with the traction motor, is provided with a fifth contactor, and the other end of the fifth contactor is connected with an electric parameter tester; and a sixth contactor is arranged at one end, connected with the traction motor, of the frequency converter in a matched mode, and the other end of the sixth contactor is electrically connected with the electric parameter tester. According to the utility model, through the parallel connection of the transformer and the frequency converter and the arrangement of the contactors at the two ends of the transformer and the frequency converter, independent tests of the frequency converter and the transformer can be realized, different detection is adapted, and the applicability is expanded; and when the frequency conversion or the voltage transformation is independently tested, the waste of resources can be reduced.
Description
Technical Field
The utility model belongs to the technical field of motor performance test, and particularly relates to a traction motor test system and a test bed thereof.
Background
The traction motor is a motor used for traction on a railway trunk electric locomotive, an industrial and mining electric locomotive, an electric transmission diesel locomotive and various electric vehicles, and is one of key components of the metro vehicle, and as the technical level is continuously improved, the performance of the metro is also higher and higher, so that the requirements on the metro traction motor are higher and higher, and in order to ensure that the metro traction motor can meet the requirements of the high-performance metro at present, a performance test is required before the traction motor leaves a factory.
The existing traction motor experimental system adopts a transformer and a frequency converter to connect in series and synchronously control the transformation and frequency conversion of the motor, different motors or different test projects, and the needed transformation and/or frequency conversion are different, so that the waste of other resources can be caused when the transformation or frequency conversion is only needed to be regulated. The voltage regulator carries out voltage regulation, and the mode that the transformer risees is big to main power supply capacity requirement, and idle test is mostly reactive power, exists very big wasting of resources, and high-capacity transformer, voltage regulator are mostly oil-immersed cooling, have conflagration potential safety hazard, hardly overcome resistance and rotate by oneself when high-power traction motor idle test, need the manual motor rotor of stirring of test personnel, exist very big potential safety hazard to test operating personnel. And, adopt the mode that high-voltage inverter directly carried out voltage frequency and adjust, conventional industrial factory building AC380V voltage can't satisfy the input voltage requirement, need dispose the high-voltage power supply return circuit alone, or dispose the boost transformer and boost to the high pressure, when the test motor multiple type, the test voltage interval is too big, low-voltage controllability is low, and must satisfy the biggest test current, there is certain wasting of resources, adopts high-voltage inverter, input cost is high.
In addition, tap-type transformers are often adopted in the market for voltage regulation, and as the tap-type transformers can only output voltages of a plurality of gears, the tap-type transformers are unfavorable for expanding the test range, and different motors need different test voltages. And the complete motor test needs to be measured by adopting different equipment, all tests cannot be completed on the same test bed at one time, test data are required to be recorded manually by test staff, the efficiency is low, the labor intensity is high, errors are easy to fill in the test data, and the data traceability is low.
Disclosure of Invention
The utility model aims to provide a traction motor test system, which aims to solve the technical problems that the existing traction motor performance test system is limited in applicability aiming at different motors, resource waste is caused during detection and the like. In order to solve the technical problems, the specific technical scheme of the utility model is as follows:
the traction motor test system comprises a traction motor, a transformer and a frequency converter, wherein the transformer and the frequency converter are electrically connected in a matched mode, the transformer and the frequency converter are arranged in parallel, one end of the transformer after being connected in parallel is electrically connected with a main power supply, the other end of the transformer is electrically connected with the traction motor, and independent control switches are arranged on the transformer and the frequency converter; one end of the transformer, which is connected with the traction motor, is provided with a fifth contactor, and the other end of the fifth contactor is connected with an electric parameter tester for measuring the working characteristics of the traction motor under different voltages and frequencies; the frequency converter is matched with one end connected with the traction motor to be provided with a sixth contactor, and the other end of the sixth contactor is electrically connected with an electric parameter tester for measuring the working characteristics of the traction motor under different voltages and frequencies, and meanwhile, the frequency conversion state and the power frequency state are isolated.
Further, a first contactor and a third contactor are respectively arranged at two ends of the transformer, and the other end of the first contactor is electrically connected with a main power supply; the other end of the third contactor is electrically connected with the traction motor; one end of the fifth contactor is electrically connected between the transformer and the third contactor.
Further, two ends of the frequency converter are respectively provided with a second contactor and a fourth contactor, and the other end of the second contactor is electrically connected with a main power supply; the other end of the fourth contactor is electrically connected with the traction motor; one end of the sixth contactor is electrically connected between the fourth contactor and the traction motor.
Further, a main breaker is arranged between the main power supply and the first contactor and between the main power supply and the second contactor, and the main breaker controls the power supply of the whole system.
Further, the transformer is a voltage regulating transformer
Another object of the present utility model is to provide a traction motor test stand, which includes a box, and the traction motor test system is disposed in the box.
Further, the front face of the box body is provided with the frequency converter, the wiring terminal, the relay and the electric parameter tester.
Further, the main breaker is arranged on the upper part of the back surface of the box body; the middle upper part is provided with a first contactor and a second contactor which are electrically connected with the main circuit breaker; a third contactor and a fourth contactor are arranged at the middle lower part, a fifth contactor and a sixth contactor are arranged at the lower part; and the lower part is also provided with a power terminal of a main power supply, a transformer inlet end and a transformer outlet end of a transformer, a parameter terminal of an electric parameter tester and a motor terminal of a traction motor.
Compared with the prior art, the utility model has the following advantages:
(1) The parallel connection of the transformer and the frequency converter and the arrangement of the contactors at the two ends of the transformer and the frequency converter respectively can realize independent test detection of the frequency converter and the transformer so as to adapt to different detection, expand applicability and rapidly and conveniently detect the performance of the motor; in addition, the waste of resources can be reduced during the independent frequency conversion or voltage transformation test;
(2) The voltage regulating transformer is adopted to meet the test requirements of different motors, test data are directly transmitted to a computer end through connection of the PLC and the sensor, so that the test data can be conveniently watched in real time, and the method is simple, convenient and quick, and avoids human errors when people test the data;
(3) The test bed has compact and reasonable structure and complete functions.
Drawings
FIG. 1 is a circuit diagram of the present utility model;
FIG. 2 is a structural layout of the test stand of the present utility model.
In the figure: the device comprises a 1-motor, a 2-frequency converter, a 3-transformer, a 4-main breaker, a 5-first contactor, a 6-second contactor, a 7-third contactor, an 8-fourth contactor, a 9-fifth contactor, a 10-sixth contactor, an 11-electric parameter tester, a 12-wiring terminal, a 13-relay, a 14-parameter wiring terminal, a 15-power wiring terminal, a 16-transformer inlet wire terminal, a 17-transformer outlet wire terminal and an 18-motor wiring terminal.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings.
Examples
As shown in fig. 1, a traction motor test system comprises a traction motor 1, and a transformer 3 and a frequency converter 2 which are electrically connected with the traction motor 1 in a matched mode, wherein the transformer 3 and the frequency converter 2 are arranged in parallel, one end of the parallel is electrically connected with a main power supply, the other end of the parallel is electrically connected with the traction motor 2, and contactors are arranged at two ends of the transformer 3 and two ends of the frequency converter 2. Specifically, the two ends of the transformer 3 are respectively provided with a first contactor 5 and a third contactor 7, and the other end of the first contactor 5 is electrically connected with a main power supply; the other end of the third contactor 7 is electrically connected with the traction motor 1; a fifth contactor 9 is arranged between the transformer 3 and the third contactor 7, and the other end of the fifth contactor 9 is connected with an electric parameter tester 11 to measure the working characteristics of the traction motor 1 under different voltages and frequencies. The two ends of the frequency converter 2 are respectively provided with a second contactor 6 and a fourth contactor 8, and the other end of the second contactor 6 is electrically connected with a main power supply; the other end of the fourth contactor 8 is electrically connected with the traction motor 1, a sixth contactor 10 is arranged between the fourth contactor 8 and the traction motor 1, and the other end of the sixth contactor 10 is electrically connected with an electric parameter tester 11 to measure the working characteristics of the traction motor 1 under different voltages and frequencies, and meanwhile, the frequency conversion state and the power frequency state are isolated. In addition, a main breaker 4 is provided between the main power supply and the first contactor 5 and the second contactor 6, and the power supply of the whole system is controlled by the on-off of the main breaker 4.
In this embodiment, the transformer 3 is a voltage regulating transformer. The test requirements of different motors are met by adopting the voltage regulating transformer, test data are directly transmitted to the computer end through connection of the PLC and the sensor, the test data are convenient to watch in real time, simplicity, convenience and rapidness are realized, and human errors during human data measurement are avoided.
Examples
As shown in fig. 2, a traction motor test stand includes a case in which a traction motor test system according to the first embodiment is disposed. The front of the box body is provided with a frequency converter 2, a wiring terminal 12, a relay 13 and an electric parameter tester 11. For the arrangement to be neat, the frequency converter 2 is arranged on the right side, and the wiring terminal 12, the relay 13 and the electrical parameter tester 11 are arranged on the left side in sequence in parallel. The upper part of the back surface of the box body is provided with a main breaker 4, and the middle upper part is provided with a first contactor 5 and a second contactor 6 which are electrically connected with the main breaker 4; a third contactor 7 and a fourth contactor 8 are arranged at the middle lower part; a fifth contactor 9 and a sixth contactor 10 are arranged at the lower part; in addition, a power supply terminal 15 of the main power supply, a transformer incoming terminal 16 and a transformer outgoing terminal 17 of the transformer 3, a parameter terminal 14 of the electric parameter tester 11, and a motor terminal 18 of the traction motor 1 are also uniformly arranged at the lower part of the reverse side of the box body.
In addition, the transformer is required to be additionally arranged due to the large size. The box body is also provided with a PLC display screen, a remote control switch and other equipment required by normal test.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (8)
1. The traction motor test system comprises a traction motor (1), and a transformer (3) and a frequency converter (2) which are electrically connected with the traction motor (1) in a matched mode, and is characterized in that the transformer (3) and the frequency converter (2) are arranged in parallel, one end of the parallel transformer is electrically connected with a main power supply, the other end of the parallel transformer is electrically connected with the traction motor (1), and independent control switches are arranged on the transformer (3) and the frequency converter (2); a fifth contactor (9) is arranged at one end of the transformer (3) connected with the traction motor (1), and the other end of the fifth contactor (9) is connected with an electric parameter tester (11) for measuring the working characteristics of the traction motor (1) under different voltages and frequencies; the frequency converter (2) is matched with one end connected with the traction motor (1) to be provided with a sixth contactor (10), and the other end of the sixth contactor (10) is electrically connected with an electric parameter tester (11) for measuring the working characteristics of the traction motor (1) under different voltages and frequencies, and meanwhile, the frequency conversion state and the power frequency state are isolated.
2. The traction motor test system according to claim 1, wherein a first contactor (5) and a third contactor (7) are respectively arranged at two ends of the transformer (3), and the other end of the first contactor (5) is electrically connected with a main power supply; the other end of the third contactor (7) is electrically connected with the traction motor (1); one end of the fifth contactor (9) is electrically connected between the transformer (3) and the third contactor (7).
3. A traction motor test system according to claim 2, wherein a second contactor (6) and a fourth contactor (8) are respectively arranged at two ends of the frequency converter (2), and the other end of the second contactor (6) is electrically connected with a main power supply; the other end of the fourth contactor (8) is electrically connected with the traction motor (1); one end of the sixth contactor (10) is electrically connected between the fourth contactor (8) and the traction motor (1).
4. A traction motor test system according to claim 3, characterized in that a main circuit breaker (4) is arranged between the main power supply and the first contactor (5) and the second contactor (6), the main circuit breaker (4) controlling the power supply of the whole system.
5. A traction motor testing system according to any one of claims 1-4, wherein said transformer (3) is a step-down transformer.
6. A traction motor test stand comprising a housing, wherein the traction motor test system of claim 5 is disposed within the housing.
7. The traction motor test stand according to claim 6, wherein the front surface of the box body is provided with the frequency converter (2), the wiring terminal (12), the relay (13) and the electrical parameter tester (11).
8. The traction motor test stand according to claim 6, wherein a main breaker (4) is arranged at the upper part of the back surface of the box body; a first contactor (5) and a second contactor (6) which are electrically connected with the main breaker (4) are arranged at the middle upper part; a third contactor (7) and a fourth contactor (8) are arranged at the middle lower part; a fifth contactor (9) and a sixth contactor (10) are arranged at the lower part; and the lower part is also provided with a power supply terminal (15) of a main power supply, a transformer inlet terminal (16) and a transformer outlet terminal (17) of a transformer (3), a parameter terminal (14) of an electric parameter tester (11) and a motor terminal (18) of the traction motor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320682778.XU CN220064308U (en) | 2023-03-31 | 2023-03-31 | Traction motor test system and test bed thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320682778.XU CN220064308U (en) | 2023-03-31 | 2023-03-31 | Traction motor test system and test bed thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220064308U true CN220064308U (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320682778.XU Active CN220064308U (en) | 2023-03-31 | 2023-03-31 | Traction motor test system and test bed thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220064308U (en) |
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2023
- 2023-03-31 CN CN202320682778.XU patent/CN220064308U/en active Active
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