CN209776180U - Small-impact direct-throw power supply system - Google Patents
Small-impact direct-throw power supply system Download PDFInfo
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- CN209776180U CN209776180U CN201920597500.6U CN201920597500U CN209776180U CN 209776180 U CN209776180 U CN 209776180U CN 201920597500 U CN201920597500 U CN 201920597500U CN 209776180 U CN209776180 U CN 209776180U
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- inverter
- power supply
- auxiliary
- cooling fan
- controller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Abstract
The utility model discloses a small-impact direct-throw power supply system, which comprises an AC auxiliary generator, an auxiliary alternating controller, a rectification module, a traction ventilator inverter, a cooling fan inverter for controlling a cooling fan and a power supply inverter for controlling the power supply of a motor train unit train; the alternating current auxiliary generator, the auxiliary alternating current controller, the traction ventilator inverter, the cooling fan inverter and the power supply inverter are respectively connected with the rectification module; the traction ventilator inverter, the cooling fan inverter and the power supply inverter are respectively connected with the auxiliary exchange controller; the auxiliary traffic controller is connected with a locomotive microcomputer control device. The utility model has the advantages that: the utility model discloses when directly throwing cooling fan motor or traction ventilator motor, all carry out the accuracy directly to throw under contravariant control, the work of another fan after directly throwing starts and also is driven by contravariant controller, and whole process is compared in traditional directly throwing mode can be little 3-5 times to the impact of auxiliary generator.
Description
Technical Field
The utility model relates to a track traffic technical field specifically is a little impact direct throw power supply system.
Background
In the application of domestic locomotives, when a cooling fan motor inverter module or a traction ventilator inverter module of a diesel engine fails, the direct throw of the cooling fan motor or the traction ventilator motor is reduced by reducing the rotating speed of the diesel engine to the idling speed. The traditional direct-throw technical means is to reduce the impact by reducing the auxiliary power generation voltage and the working frequency of the direct-throw motor. When the train is powered, the power supply output of the auxiliary system is required to be fixed frequency and fixed voltage output of 415V and 50 Hz. In the traditional technical means, when an alternating current auxiliary generator is adopted for supplying power to a train to deal with the condition of direct motor switching, or after the power supply of the train is stopped, the direct switching of a cooling fan motor and a traction ventilator motor can be carried out; or firstly, the cooling fan motor and the traction ventilator motor are directly switched, and then the power supply of the train is carried out. The load of train power supply mainly is vehicle air conditioner, stops train power supply will influence passenger's travelling comfort, even brings the panic for the passenger.
The direct switching means that when the inverter which is originally supplied with power by the inverter fails, the traction ventilator motor and the cooling fan motor are directly supplied with power by the alternating current auxiliary generator through the switching of the contactor. When the contactor is converted into an AC auxiliary generator for power supply, because the load of the motor is suddenly increased, when the motor is started, the starting current is large, the power supply voltage of the whole AC auxiliary generator is influenced, and direct-throw impact is generated.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of prior art, the utility model provides a little impact direct-casting power supply system for reduce the impact of cooling fan motor or traction fan motor direct-casting, and avoid the train power supply to receive the influence.
The utility model provides a technical scheme that above-mentioned problem adopted is: a small-impact direct-throw power supply system comprises an alternating-current auxiliary generator, an auxiliary alternating-current controller, a rectification module, a traction ventilator inverter for controlling a traction ventilator, a cooling fan inverter for controlling a cooling fan and a power supply inverter for controlling power supply of a motor train unit train; the alternating current auxiliary generator, the auxiliary alternating current controller, the traction ventilator inverter, the cooling fan inverter and the power supply inverter are respectively connected with the rectification module; the traction ventilator inverter, the cooling fan inverter and the power supply inverter are respectively connected with the auxiliary exchange controller; the auxiliary traffic controller is connected with a locomotive microcomputer control device.
Further, for better realization the utility model discloses, locomotive microcomputer control device electricity be connected with the diesel engine, the diesel engine be connected with the transmission of interchange auxiliary generator.
Further, for better realization the utility model discloses, locomotive microcomputer control device electricity be connected with the driver's control cabinet, the driver's control cabinet with assist and hand over the controller electricity and be connected.
Furthermore, in order to better realize the utility model, the microcomputer control device of the locomotive is electrically connected with a display.
The beneficial effect that this scheme obtained is:
(1) when the cooling fan motor or the traction ventilator motor is directly thrown, accurate direct throwing is carried out under inversion control, the work starting of the other fan is also driven by the inversion controller after direct throwing, the cooling fan motor or the traction ventilator motor is directly switched in the working process through accurate direct throwing, the condition that the starting current of the motor is 3-5 times of the rated current does not exist, and the impact of the whole process on the auxiliary generator can be 3-5 times smaller than that of the traditional direct throwing mode.
(2) The voltage and the frequency generated by the alternating current auxiliary generator are not limited, so that no special requirement is required for the rotating speed of the diesel engine during direct switching, and the rotating speed of the diesel engine does not need to be idling or very low, so that the power supply of a train can be ensured.
drawings
FIG. 1 is a schematic diagram of a power supply system;
FIG. 2 is a schematic diagram of AC auxiliary generator voltage and back emf;
Fig. 3 is a schematic diagram of the back emf of the ac auxiliary generator voltage and the load power-off state.
Detailed Description
the present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
Example 1:
As shown in fig. 1, in the present embodiment, a small-impact direct-throw power supply system includes an ac auxiliary generator, an auxiliary ac controller, a rectification module, a traction ventilator inverter for controlling a traction ventilator, a cooling fan inverter for controlling a cooling fan, and a power supply inverter for controlling power supply of a train of a motor train unit; the alternating current auxiliary generator, the auxiliary alternating current controller, the traction ventilator inverter, the cooling fan inverter and the power supply inverter are respectively connected with the rectification module; the traction ventilator inverter, the cooling fan inverter and the power supply inverter are respectively connected with the auxiliary exchange controller; the auxiliary traffic controller is connected with a locomotive microcomputer control device. The locomotive microcomputer control device is electrically connected with a diesel engine, and the diesel engine is in transmission connection with an alternating current auxiliary generator.
As shown in fig. 2, in a normal state, when the cooling fan motor and the traction fan motor operate, the same back electromotive force as that of the ac auxiliary generator is generated.
as shown in fig. 3, when the cooling fan motor or the traction fan motor has an inverter failure and the load loses power, the counter-electromotive force and the frequency decrease correspondingly as the load rotation speed decreases.
Take cooling fan inverter failure as an example:
When the cooling fan inverter fails, firstly, a fan direct-throwing signal is sent to a locomotive microcomputer control device by an auxiliary alternating controller, and after the locomotive microcomputer control device receives the signal, the locomotive microcomputer control device quits the common regulation working condition of the rotating speed of the diesel engine and changes the rotating speed of the diesel engine into the direct-throwing working condition, so that the rotating speed of the diesel engine is fixed at a rotating speed point which does not influence the power supply of a train and can also enable the fan to conduct direct throwing. The motor load is controlled by the inverter before the fault, namely, the rotating speed of the load is accurately controlled according to the requirement of the auxiliary load of the locomotive, so that energy is saved, and a fan is not directly thrown. The rotation speed point can be determined by the power generation frequency and voltage of the alternator at the time of failure. The specific method and principle for determining the rotation speed point are common knowledge of those skilled in the art, and those skilled in the art can implement the above functions according to the content described in the present embodiment, and the specific method and principle for determining the rotation speed point are not defined and described herein.
And after the auxiliary alternating current controller detects that the rotating speed of the diesel engine reaches a direct-throwing rotating speed point, a direct-throwing signal is sent to the traction ventilator inverter, and after the traction ventilator inverter receives the signal, the traction ventilator motor is driven to the direct-throwing rotating speed point.
And at the direct-throwing rotating speed point, the traction ventilator inverter monitors the voltage, the frequency and the phase output by the alternating-current auxiliary generator, and when the suitable state is reached, the traction ventilator inverter sends signals to the auxiliary alternating controller.
and after receiving the signal, the auxiliary alternating current controller controls the traction ventilator to directly throw by controlling the output frequency of the inverter at t1-t 0.
After the traction ventilator is directly thrown, the traction ventilator inverter drives the cooling fan motor to be slowly started.
The locomotive microcomputer control device is electrically connected with a driver console, and the driver console is electrically connected with the auxiliary traffic controller.
The locomotive microcomputer control device is electrically connected with a display.
In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical spirit of the present invention is within the spirit and principle of the present invention, and any simple modification, equivalent replacement, and improvement made to the above embodiments are all within the protection scope of the technical solution of the present invention.
Claims (4)
1. A small-impact direct-throw power supply system is characterized in that: the system comprises an alternating-current auxiliary generator, an auxiliary alternating-current controller, a rectification module, a traction ventilator inverter for controlling a traction ventilator, a cooling fan inverter for controlling a cooling fan and a power supply inverter for controlling power supply of a motor train unit train; the alternating current auxiliary generator, the auxiliary alternating current controller, the traction ventilator inverter, the cooling fan inverter and the power supply inverter are respectively connected with the rectification module; the traction ventilator inverter, the cooling fan inverter and the power supply inverter are respectively connected with the auxiliary exchange controller; the auxiliary traffic controller is connected with a locomotive microcomputer control device.
2. A small-impact direct-current power supply system according to claim 1, characterized in that: the locomotive microcomputer control device is electrically connected with a diesel engine, and the diesel engine is in transmission connection with an alternating current auxiliary generator.
3. A small-impact direct-current power supply system according to claim 1, characterized in that: the locomotive microcomputer control device is electrically connected with a driver console, and the driver console is electrically connected with the auxiliary traffic controller.
4. A small-impact direct-current power supply system according to claim 1, characterized in that: the locomotive microcomputer control device is electrically connected with a display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920597500.6U CN209776180U (en) | 2019-04-28 | 2019-04-28 | Small-impact direct-throw power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920597500.6U CN209776180U (en) | 2019-04-28 | 2019-04-28 | Small-impact direct-throw power supply system |
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| Publication Number | Publication Date |
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| CN209776180U true CN209776180U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920597500.6U Active CN209776180U (en) | 2019-04-28 | 2019-04-28 | Small-impact direct-throw power supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941105A (en) * | 2019-04-28 | 2019-06-28 | 中车资阳机车有限公司 | Power supply system is delivered directly in the small impact of one kind |
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2019
- 2019-04-28 CN CN201920597500.6U patent/CN209776180U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941105A (en) * | 2019-04-28 | 2019-06-28 | 中车资阳机车有限公司 | Power supply system is delivered directly in the small impact of one kind |
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