CN216771940U - Experiment power supply test bench - Google Patents
Experiment power supply test bench Download PDFInfo
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- CN216771940U CN216771940U CN202123215970.8U CN202123215970U CN216771940U CN 216771940 U CN216771940 U CN 216771940U CN 202123215970 U CN202123215970 U CN 202123215970U CN 216771940 U CN216771940 U CN 216771940U
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Abstract
An experimental power supply test bed relates to the field of railway locomotive power supplies. The test bed needs to be matched with a power load cabinet, a 380V power supply and a 380V power supply switch for use, and the 380V power supply switch controls whether to be connected with the 380V power supply; two ends of a 380V power switch are connected with a power voltage digital display meter in parallel; the output end of the power supply voltage digital display meter is connected with the input end of the second three-phase rectifier; the output end of the second three-phase rectifier is connected with the input end of the phase-controlled rectifying circuit; the output end of the phase control rectification circuit is connected with the input end of the 380V/50V transformer, and the controlled end of the phase control rectification circuit is connected with the control end of the controller circuit; the output end of the 380V/50V transformer is connected with the input end of the fusing protection circuit; the output end of the fusing protection circuit is connected with the input end of the output current digital display meter; the output end of the output current digital display meter is connected with the input end of the power switch; the output end of the power switch is connected with the input end of the power load cabinet, and the two ends of the power switch are connected with the output voltage digital display meter in parallel. The requirement of the equipment for testing the phase-control power supply is met.
Description
Technical Field
The utility model relates to the field of railway locomotive power supplies, in particular to an experimental power supply test bed.
Background
At present, in a power supply system of a railway locomotive, a phase-controlled power supply can be used as a direct-current charging power supply system besides obtaining alternating-current power supply of a power line by a boosting mode, and the phase-controlled power supply also charges a standby battery when performing direct-current power supply. The high-reliability electronic equipment necessary for ensuring the normal operation of the locomotive during phase control power supply is a power supply system adopting the controlled silicon as a rectifier. Before the phase-controlled power supplies are used as a direct current charging power supply system to supply power to the railway locomotive, the working performance of the phase-controlled power supplies needs to be verified. Therefore, it is necessary to design a device for testing the phase-controlled power supply.
SUMMERY OF THE UTILITY MODEL
The utility model provides an experimental power supply test bed, which aims to meet the requirements of current equipment for testing a phase-controlled power supply and monitor the voltage and current operation conditions of the equipment.
The technical scheme adopted by the utility model is as follows: an experimental power supply test bed needs to be matched with a power load cabinet 13, a 380V power supply and a 380V power switch 7 for use, and the 380V power switch 7 controls whether to be connected with the 380V power supply; the test bed comprises a controller circuit 8, a power switch 1, a fusing protection circuit 2, a first three-phase rectifier 3, a 380V/750V transformer 4, a phase-control rectification circuit 5, a second three-phase rectifier 6, a power voltage digital display meter 9, an output current digital display meter 10 and an output voltage digital display meter 11;
two ends of the 380V power switch 7 are connected with a power supply voltage digital display meter 9 in parallel; the output end of the power supply voltage digital display meter 9 is connected with the input end of the second three-phase rectifier 6; the output end of the second three-phase rectifier 6 is connected with the input end of the phase-controlled rectifying circuit 5; the output end of the phase control rectification circuit 5 is connected with the input end of the 380V/750V transformer 4, and the controlled end of the phase control rectification circuit 5 is connected with the control end of the controller circuit 8; the output end of the 380V/750V transformer 4 is connected with the input end of the fusing protection circuit 2; the output end of the fusing protection circuit 2 is connected with the input end of the output current digital display meter 10; the output end of the output current digital display meter 10 is connected with the input end of the power switch 1; the output end of the power switch 1 is connected with the input end of the power load cabinet 13, and the two ends of the power switch 1 are connected with the output voltage digital display meter 11 in parallel.
Preferably, the output end of the power switch 1 is connected with the input end of the power load cabinet 13 through the power load cabinet connector 12.
Preferably, the power load cabinet connector 12 is a M12 x 80 pure copper post.
Has the advantages that: the utility model is used as a complete product and has the characteristics of convenient maintenance, good universality, simple structure, excellent heat dissipation performance and the like. The test power supply test bed completes monitoring of output voltage and output current of the test power supply test bed mainly by providing +/-DC 750V direct current and matching with a power load cabinet, and guarantees that the output +/-DC 750V direct current can meet the use requirements of a railway locomotive. The power supply test bed is matched with a power load cabinet for use, can simulate a normal working mode on a vehicle, tests the functions of the power supply test bed and can completely reach a full-load test condition. The test bed has stable and reliable performance, reasonable structure and convenient operation.
Drawings
FIG. 1 is a schematic structural diagram of an experimental power supply test bed;
FIG. 2 is a schematic diagram of a power load cabinet connector;
FIG. 3 is a schematic diagram of a fuse protection circuit;
FIG. 4 is a circuit diagram of the connection relationship between the first three-phase rectifier and the 380V/750V transformer;
FIG. 5 is a circuit diagram showing the connection relationship between a 380V/750V transformer, a phase-controlled rectifying circuit and a three-phase rectifier II;
fig. 6 is a circuit diagram of the connection relationship of the second and 380V power supplies of the three-phase rectifier.
Detailed Description
In the first embodiment, the first embodiment is described in detail with reference to fig. 1 to 6, and the test bed of the experimental power supply in the first embodiment needs to be used in cooperation with a power load cabinet 13, a 380V power supply and a 380V power switch 7, and the 380V power switch 7 controls whether to access the 380V power supply; the test bed comprises a controller circuit 8, a power switch 1, a fusing protection circuit 2, a first three-phase rectifier 3, a 380V/750V transformer 4, a phase-control rectification circuit 5, a second three-phase rectifier 6, a power voltage digital display meter 9, an output current digital display meter 10 and an output voltage digital display meter 11;
two ends of the 380V power switch 7 are connected with a power supply voltage digital display meter 9 in parallel; the output end of the power supply voltage digital display meter 9 is connected with the input end of the second No. 6 three-phase rectifier; the output end of the second three-phase rectifier 6 is connected with the input end of the phase-controlled rectifying circuit 5; the output end of the phase control rectification circuit 5 is connected with the input end of the 380V/750V transformer 4, and the controlled end of the phase control rectification circuit 5 is connected with the control end of the controller circuit 8; the output end of the 380V/750V transformer 4 is connected with the input end of the fusing protection circuit 2; the output end of the fusing protection circuit 2 is connected with the input end of the output current digital display meter 10; the output end of the output current digital display meter 10 is connected with the input end of the power switch 1; the output end of the power switch 1 is connected with the input end of the power load cabinet 13, and the two ends of the power switch 1 are connected with the output voltage digital display meter 11 in parallel.
In the test bed, a 380V power supply is rectified by a three-phase rectifier II and then rectified by a phase-control rectification circuit, then the 380V power supply voltage input by a 380V/750V transformer is boosted to 750V, and the 750V direct-current power supply (+ -DC 750V) is output after being rectified by the three-phase rectifier I, and the 750V direct-current power supply is connected to a power load cabinet through a power switch. The controller circuit controls the phase-control rectifying circuit to rectify, and the phase-control rectifying circuit can better ensure the stability of output voltage. The power supply voltage digital display meter displays the magnitude of the input power supply voltage value, the output current digital display meter and the output voltage digital display meter display the current value and the power supply value, and the monitoring of the voltage and current running condition of the power supply test bed is completed.
When the 380V power switch is closed, the test bench is connected with the 380V power supply and outputs 750V direct-current power supply, the power switch is closed, the power load cabinet 13 is connected with the power switch 1, the power load cabinet is communicated, the size of the load in the power load cabinet directly influences the size of the output voltage value and the output current value of the 750V direct-current power supply, and at the moment, the output voltage digital display meter and the output current digital display meter display in real time. The test bed completes the test of the output voltage and the output current of the power supply test bed by providing the +/-DC 750V direct current and matching the power load cabinet, and ensures that the output +/-DC 750V direct current can meet the use requirement of a railway locomotive.
In the second embodiment, the output end of the power switch 1 is connected to the input end of the power load cabinet 13 through the power load cabinet connector 12.
In a third embodiment, the experimental power supply test bench described in the second embodiment is further described, in this embodiment, the power load cabinet connector 12 is an M12 × 80 pure copper post terminal.
The power supply test bed is matched with a power load cabinet for use, can simulate a normal working mode on a vehicle, tests the functions of the power supply test bed and can completely reach a full-load test condition. The test bed has stable and reliable performance, reasonable structure and convenient operation.
Test power supply technical parameter in test power supply test bed
1) Rated AC power input: 3 phi AC380V +/-10%, 50 HZ;
2) direct current output voltage: DC750V +/-10%;
3) direct current output current: 0-10A;
4) external dimension (mm): 80*113*100
Experiment power supply test bed operation instruction
1) A power switch of an experimental power supply test bed is communicated with a power load cabinet through a connector of the power load cabinet;
2) closing a 380V power switch;
3) the method comprises the following steps of closing a 4P power supply air switch (power supply switch) of an experimental power supply test bed, and displaying a current input voltage value by a power supply voltage digital display meter on a panel;
4) the output voltage digital display meter and the output current digital display meter display the output voltage and the output current of the current test bed.
While the utility model has been described with reference to several embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from its scope. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (3)
1. An experimental power supply test bed needs to be matched with a power load cabinet (13), a 380V power supply and a 380V power supply switch (7) for use, and the 380V power supply switch (7) controls whether to be connected with the 380V power supply; the test bed comprises a controller circuit (8), and is characterized by further comprising a power switch (1), a fusing protection circuit (2), a first three-phase rectifier (3), a 380V/750V transformer (4), a phase-control rectification circuit (5), a second three-phase rectifier (6), a power supply voltage digital display meter (9), an output current digital display meter (10) and an output voltage digital display meter (11);
two ends of a 380V power switch (7) are connected with a power voltage digital display meter (9) in parallel; the output end of the power supply voltage digital display meter (9) is connected with the input end of the second three-phase rectifier (6); the output end of the second three-phase rectifier (6) is connected with the input end of the phase-controlled rectifying circuit (5); the output end of the phase control rectification circuit (5) is connected with the input end of the 380V/750V transformer (4), and the controlled end of the phase control rectification circuit (5) is connected with the control end of the controller circuit (8); the output end of the 380V/750V transformer (4) is connected with the input end of the fusing protection circuit (2); the output end of the fusing protection circuit (2) is connected with the input end of the output current digital display meter (10); the output end of the output current digital display meter (10) is connected with the input end of the power switch (1); the output end of the power switch (1) is connected with the input end of the power load cabinet (13), and the two ends of the power switch (1) are connected with the output voltage digital display meter (11) in parallel.
2. An experimental power supply test bench according to claim 1, characterized in that the output of the power switch (1) is connected to the input of the power load cabinet (13) through the power load cabinet connector (12).
3. An experimental power supply test bench according to claim 2, characterized in that the power load cabinet connector (12) is a M12 x 80 pure copper post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215970.8U CN216771940U (en) | 2021-12-20 | 2021-12-20 | Experiment power supply test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215970.8U CN216771940U (en) | 2021-12-20 | 2021-12-20 | Experiment power supply test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216771940U true CN216771940U (en) | 2022-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123215970.8U Active CN216771940U (en) | 2021-12-20 | 2021-12-20 | Experiment power supply test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216771940U (en) |
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2021
- 2021-12-20 CN CN202123215970.8U patent/CN216771940U/en active Active
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