CN212210604U - Vehicle-mounted power supply monitoring system based on three-phase traction - Google Patents
Vehicle-mounted power supply monitoring system based on three-phase traction Download PDFInfo
- Publication number
- CN212210604U CN212210604U CN202020936085.5U CN202020936085U CN212210604U CN 212210604 U CN212210604 U CN 212210604U CN 202020936085 U CN202020936085 U CN 202020936085U CN 212210604 U CN212210604 U CN 212210604U
- Authority
- CN
- China
- Prior art keywords
- traction
- power supply
- switching device
- vehicle
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000011217 control strategy Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model relates to a vehicle-mounted power supply monitoring system based on three-phase traction, which is connected with a three-phase bus and comprises a traction power supply network, a traction transformer, a monitoring module, a load AC-DC converter and a traction AC-DC-AC converter; the traction power supply network is connected to the three-phase bus and converts three-phase alternating current into traction alternating current; the traction transformer is connected to the output end of the traction power supply network, and transforms traction alternating current into traction alternating current of 27.5kV and outputs the traction alternating current to the vehicle-mounted cable; the monitoring module acquires the output voltage of the secondary side of the traction transformer and the voltage of the vehicle-mounted cable; the load AC-DC converter is connected to a vehicle-mounted cable and supplies power to the row for loads; the traction AC-DC-AC converter is connected to the vehicle-mounted cable and supplies power to the traction motor. The utility model discloses use the three-phase alternating current for drawing on-vehicle power supply to can avoid circuit faults such as idle, negative sequence, harmonic to lead to can not export normal voltage.
Description
Technical Field
The utility model relates to a pull on-vehicle power supply technical field, in particular to on-vehicle power supply monitored control system based on three-phase is pull.
Background
Under the condition of the same power supply capacity, the three-phase generator, the motor, the transformer and the power transmission line are more material-saving than the manufacture and the construction of the same kind of single-phase elements, and have simple structure and excellent performance, and the instantaneous value of the three-phase electric power is kept constant, so that the three-phase alternating current is widely applied to the industry. However, three overhead lines require three-pole pantographs, two overhead lines require two-pole pantographs, the contact structure of the overhead lines and the pantographs is too complex, the reliability of the overhead lines and the pantographs becomes an obstacle which is difficult to surmount, and in addition, the technical problem of turnouts is solved. Unfortunately, the advantages of three-phase alternating current cannot be brought into play in railway traction power supply.
Therefore, how to realize a system which can supply power for a traction vehicle by using three-phase alternating current and can avoid the problem that normal voltage cannot be output due to line faults such as reactive power, negative sequence, harmonic waves and the like becomes an object of research in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vehicle-mounted power supply monitored control system based on three-phase is pull uses the three-phase alternating current for pulling vehicle-mounted power supply to can avoid circuit faults such as idle, negative sequence, harmonic to lead to can not export normal voltage.
In order to realize the purpose of the utility model, the embodiment of the utility model provides a following technical scheme:
a vehicle-mounted power supply monitoring system based on three-phase traction is connected to a three-phase bus and supplies power to a column power supply load and a traction motor, and comprises a traction power supply network, a traction transformer, a monitoring module, a load AC-DC converter and a traction AC-DC-AC converter;
the traction power supply network is connected to the three-phase bus and converts three-phase alternating current into traction alternating current;
the traction transformer is connected to the output end of the traction power supply network, and transforms traction alternating current into traction alternating current of 27.5kV and outputs the traction alternating current to the vehicle-mounted cable;
the monitoring module acquires the output voltage of the secondary side of the traction transformer and the voltage of the vehicle-mounted cable;
the load AC-DC converter is connected to a vehicle-mounted cable and supplies power to the row for loads;
the traction AC-DC-AC converter is connected to the vehicle-mounted cable and supplies power to the traction motor.
Furthermore, in order to better realize the utility model, the monitoring module comprises a voltage transformer AT, a control circuit, a driving circuit, a PC computer and a signal adjusting unit; the voltage transformer AT acquires the output voltage of the secondary side of the traction transformer and outputs the output voltage to the PC computer after passing through the signal conditioning unit; the PC computer sends the control signal to the control circuit through the drive circuit, and the control circuit switches the first power supply line and the second power supply line according to the control signal of the PC computer.
Furthermore, for better realization the utility model discloses, the monitor module still includes the display module, is used for showing the result of PC computer analysis.
Furthermore, in order to better implement the present invention, the control circuit includes a relay K1, a relay K2, a switch device G1, a switch device G2, and a double-end sliding resistor R1-R2, and a control terminal of the switch device G1 and a controller of the switch device G2 are respectively connected to an output terminal of the driving circuit;
the transmitting end of the switching device G1 is connected with the high-resistance end of the double-end sliding resistor R1, the low-resistance end of the double-end sliding resistor R1 is grounded, the current collecting end of the switching device G1 is connected with the relay K1, and the normally closed contact of the relay K1 is arranged on the first power supply line;
the transmitting end of the switching device G2 is connected with the low-resistance end of the double-head sliding resistor R2, the high-resistance end of the double-head sliding resistor R2 is grounded, the current collecting end of the switching device G2 is connected with the relay K2, and the normally closed contact of the relay K2 is arranged on the second power supply line.
Further, for better realization the utility model discloses, load AC/DC converter includes that the first four quadrant rectifier circuit, the first DC current ware of pulling, the first input that pulls four quadrant rectifier circuit inserts the vehicle mounted cable, and the first output that pulls four quadrant rectifier circuit is connected with the input of the first DC current ware, and the output of first DC current ware is connected with the row confession load.
Further, for better realization the utility model discloses, pull the AC-DC-AC converter and include that the second pulls four-quadrant rectifier circuit, second DC converter, pulls the dc-to-ac converter, the second pulls the input of four-quadrant rectifier circuit and inserts the vehicle mounted cable, and the second pulls the output of four-quadrant rectifier circuit and is connected with second DC converter's input, and second DC converter's output and the input that pulls the dc-to-ac converter are connected, and the output that pulls the dc-to-ac converter is connected with traction motor.
Furthermore, in order to better implement the present invention, the second dc converter includes a switching device S1-S10, an inductor L1, a capacitor C1, and a transformer T; the switching device S3, the switching device S4, the switching device S5, the switching device S6, the transformer T, the switching device S7, the switching device S8, the switching device S9 and the switching device S10 form a bidirectional conversion circuit;
one end of the inductor L1 is connected with the output end of the second traction four-quadrant rectification circuit, the other end of the inductor L1 is respectively connected with the first end of the switching device S1 and the first end of the switching device S2, the second end of the switching device S2 is respectively connected with one end of the capacitor C1 and the original end of the bidirectional conversion circuit, the second end of the switching device S1 and the other end of the capacitor C1 are respectively connected with the original end of the bidirectional conversion circuit, and the secondary end of the bidirectional conversion circuit is connected with the traction inverter.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses use and pull power supply net, traction transformer and convert three-phase alternating current into and pull the alternating current, the load AC DC AC converter that the rethread was added and pull the AC DC AC converter and convert and vary voltage, supply load and traction motor for the row on the vehicle supplies power, uses the utility model discloses not only can utilize the advantage of three-phase alternating current, also can supply power for the row on the vehicle load and traction motor simultaneously.
The utility model discloses the monitoring module who adds acquires the voltage on traction transformer secondary side, carries out detection and analysis to the power supply line of on-vehicle cable in real time, if when a certain power supply line leads to can not export normal voltage because of taking place circuit faults such as idle, negative sequence, harmonic, can switch over at once to another power supply line and supply power for row's confession load and traction motor, need not to vehicle-mounted stop work, has brought very big convenience to maintenance work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a vehicle-mounted power supply monitoring system module of the present invention;
FIG. 2 is a schematic view of the monitoring module of the present invention;
fig. 3 is a block diagram of the load ac/dc converter module of the present invention;
fig. 4 is a block diagram of the traction ac-dc-ac converter module of the present invention;
fig. 5 is a schematic diagram of a second dc converter circuit according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Also, in the description of the present invention, the terms "first," "second," and the like are used solely for distinguishing between the descriptions and not necessarily for indicating or implying any actual such relationship or order between such entities or operations.
Example 1:
the utility model discloses a following technical scheme realizes, as shown in fig. 1, a vehicle-mounted power supply monitored control system based on three-phase is pull connects in the three-phase generating line, for the power supply of row supply load and traction motor, including pulling power supply network, traction transformer, monitoring module, load AC/DC converter, pulling AC/DC/AC converter, wherein:
the traction power supply network is connected to the three-phase bus and converts three-phase alternating current into traction alternating current; the traction power supply network outputs traction alternating current to a traction transformer, the traction transformer transforms the traction alternating current into traction alternating current of 27.5kV and outputs the traction alternating current to a vehicle-mounted cable, and the load alternating current-direct current converter and the traction alternating current-direct current-alternating current converter are connected to the vehicle-mounted cable and respectively supply power to a row load and a traction motor. The monitoring module obtains the output voltage of the secondary side of the traction transformer and the voltage of the vehicle-mounted cable, judges the power transmission condition of the first power supply line and the second power supply line in the vehicle-mounted cable after calculation and analysis, and performs power supply switching.
In detail, as shown in fig. 2, the monitoring module includes a voltage transformer AT, a control circuit, a driving circuit, a PC computer, a signal conditioning unit, and a display module. And the voltage transformer AT acquires the output voltage of the secondary side of the traction transformer and outputs the output voltage to the PC computer after passing through the signal regulating unit, and the PC computer analyzes the working condition of a voltage line output by the secondary transformer of the traction transformer and judges whether a fault exists or not, so that a control strategy is obtained. The PC computer passes through drive circuit according to the control strategy who obtains and reaches control circuit with control signal, and control circuit switches first power supply line and second power supply line according to the control signal that the PC computer was given down.
As shown in fig. 2, the control circuit includes a relay K1, a relay K2, a switching device G1, a switching device G2, and double-ended sliding resistors R1-R2. The control end of the switching device G1 and the controller of the switching device G2 are respectively connected with the output end of the driving circuit, the transmitting end of the switching device G1 is connected with the high-resistance end of the double-end sliding resistor R1, the low-resistance end of the double-end sliding resistor R1 is grounded, the collecting end of the switching device G1 is connected with the relay K1, and the normally closed contact of the relay K1 is arranged on the first power supply line; the transmitting end of the switching device G2 is connected with the low-resistance end of the double-head sliding resistor R2, the high-resistance end of the double-head sliding resistor R2 is grounded, the current collecting end of the switching device G2 is connected with the relay K2, and the normally closed contact of the relay K2 is arranged on the second power supply line.
The signal regulating unit obtains the voltage output by the traction transformer Ti through the voltage transformer AT, the voltage signal is converted into a digital signal acceptable by the PC computer after the conventional regulation is carried out through the signal regulating unit, and the PC computer analyzes the working condition of a voltage line output by the traction transformer Ti and judges whether a fault exists or not, so that a control strategy is obtained. For example, the traction transformer secondarily transforms the voltage output to the vehicle-mounted cable, that is, the voltage of the vehicle-mounted cable is the voltage of the traction transformer, the vehicle-mounted cable includes a first power supply line, a second power supply line, and an electric rail line (equivalent to a ground line), the first power supply line or the second power supply line is used by the train supply load and the traction motor to supply electric energy, when the upper traction transformer or the traction power supply network has a fault, the voltage of the first power supply line or the second power supply line which is used by the traction transformer to output power supply is likely to be abnormal, and the voltage is likely to be damaged when the voltage is transmitted downwards to the train supply load and.
Therefore, the PC computer analyzes the voltage acquired by the voltage transformer AT, the working conditions of the first power supply line and the second power supply line can be judged, if the first power supply line can output normal voltage, the PC computer transmits a control strategy that the first power supply line supplies power to the load and the traction motor for the train to the control circuit through the driving circuit, the control end of the switch device G1 receives a pulse signal AT the moment, so that the switch device G1 is switched on, the sliding bridge of the double-slider resistor R1 slides to the low-resistance end, and simultaneously the sliding bridge slides to the high-resistance end of the double-slider resistor R2, so that the relay K1 is attracted, the normally closed contact of the relay K is closed, and the first power supply line forms a passage to supply power to the load and the traction motor for the train. If the first power supply line can not output positive voltage, the PC computer enables a control strategy that the second power supply line supplies power to the load and the traction motor for the train to reach the switching device G2 through the driving circuit, at the moment, the control end of the switching device G2 receives a pulse signal, the switching device G2 is conducted, the sliding bridge of the double-slider resistor R2 slides to the low-resistance end, meanwhile, the sliding bridge slides to the high-resistance end of the double-slider resistor R1, the relay K2 is attracted, the normally closed contact of the relay K2 is closed, and the second power supply line forms a passage to supply power to the load and the traction motor for the train. The line to be supplied with power is switched from the first power supply line to the second power supply line, so that a worker can maintain the first power supply line in time without stopping the operation of the train supply load and the traction motor until the PC computer detects that the second power supply line cannot output normal voltage, and the line to be supplied with power is switched from the second power supply line to the first power supply line.
It should be noted that, as shown in fig. 2, when the PC computer issues a control instruction to the control circuit, the driving circuit may send a pulse signal to the switching device G1 or the switching device G2 according to a main instruction of the control instruction, that is, when the switching device G1 receives the pulse signal, the switching device G2 may not receive the pulse signal, and then the switching device G1 is turned on, the relay K1 is pulled in, and the first power supply line forms a path, and meanwhile, since the switching device G1 forms a path, the current of the dual slider resistor R1 reaches a maximum, the sliding bridge shared by the dual slider resistor R2 slides to the low resistance end of R1, that is, to the high resistance end of R2, so the switching device G2 is turned off, the relay K2 is normally open, and the second power supply line forms a short circuit. Similarly, when the switching device G2 receives the pulse signal, the second power supply line forms a path, the first power supply line forms a short circuit, and the switching principle is the same as that for switching the power supply to the column supply load and the traction motor from the first power supply line to the second power supply line, and therefore, the description is not repeated.
In the power supply circuit provided by the scheme, only one of the switching device G1 or the switching device G2 needs to be sent with a pulse signal, so that the power supply of the lines of the first power supply line and the second power supply line can be switched to the line capable of outputting normal voltage for the column supply load and the traction motor, the normal work of a rear-end vehicle is ensured, even if one line fails and cannot output normal voltage, the vehicle does not need to stop working, the other line can be immediately switched to, and great convenience is brought to the maintenance work.
The train supply load is a load which is powered by direct current on a vehicle, so that the load AC-DC converter is used for converting traction AC output by the traction transformer into direct current and then supplying power to the train supply load. As shown in fig. 3, the load ac-dc converter includes a first traction four-quadrant rectifying circuit and a first dc converter, where the first traction four-quadrant rectifying circuit is configured to convert traction ac power transmitted by a vehicle-mounted cable into dc power, and the dc power is converted by the first dc converter to supply power to a load.
The traction motor is a load which is on a vehicle and uses alternating current for power supply, so that the traction alternating current output by the traction transformer is converted into direct current by using the traction alternating current-direct current-alternating current converter, then voltage transformation is carried out, and finally the direct current is inverted into alternating current to supply power for the traction motor. As shown in fig. 4, the traction ac-dc-ac converter includes a second traction four-quadrant rectifying circuit, a second dc converter, and a traction inverter, where the second traction four-quadrant rectifying circuit is configured to convert traction ac power transmitted by a vehicle-mounted cable into dc power, and if the ac power transmitted by a vehicle-mounted voltage is directly transformed, a power frequency transformer with a large volume and weight is required. Therefore, the traction inverter used in the scheme is composed of a switching device, the second traction four-quadrant rectification circuit is used for converting traction alternating current transmitted by the vehicle-mounted cable into direct current, the direct current is converted by the second direct current converter, and finally the voltage output to the traction motor can be changed by controlling the working frequency of the switching device through the outside through the traction inverter with a small size.
Furthermore, as shown in fig. 5, the second dc converter includes switching devices S1-S10, an inductor L1, a capacitor C1, and a transformer T; the switching device S3, the switching device S4, the switching device S5, the switching device S6, the transformer T, the switching device S7, the switching device S8, the switching device S9 and the switching device S10 form a bidirectional conversion circuit; one end of the inductor L1 is connected with the output end of the second traction four-quadrant rectification circuit, the other end of the inductor L1 is respectively connected with the first end of the switching device S1 and the first end of the switching device S2, the second end of the switching device S2 is respectively connected with one end of the capacitor C1 and the original end of the bidirectional conversion circuit, the second end of the switching device S1 and the other end of the capacitor C1 are respectively connected with the original end of the bidirectional conversion circuit, and the secondary end of the bidirectional conversion circuit is connected with the traction inverter. It should be noted that, the first dc converter and the second dc converter can be implemented by the circuit shown in fig. 5, and different voltages can be output by adjusting the frequency of the pulse signal externally supplied to the switching device.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a vehicle-mounted power supply monitored control system based on three-phase is pull, connects in the three-phase bus, for the power supply of row's confession load and traction motor, its characterized in that: the system comprises a traction power supply network, a traction transformer, a monitoring module, a load AC-DC converter and a traction AC-DC-AC converter;
the traction power supply network is connected to the three-phase bus and converts three-phase alternating current into traction alternating current;
the traction transformer is connected to the output end of the traction power supply network, and transforms traction alternating current into traction alternating current of 27.5kV and outputs the traction alternating current to the vehicle-mounted cable;
the monitoring module acquires the output voltage of the secondary side of the traction transformer and the voltage of the vehicle-mounted cable;
the load AC-DC converter is connected to a vehicle-mounted cable and supplies power to the row for loads;
the traction AC-DC-AC converter is connected to the vehicle-mounted cable and supplies power to the traction motor.
2. The on-vehicle power supply monitored control system based on three-phase is pull of claim 1, characterized in that: the monitoring module comprises a voltage transformer AT, a control circuit, a driving circuit, a PC computer and a signal adjusting unit; the voltage transformer AT acquires the output voltage of the secondary side of the traction transformer and outputs the output voltage to the PC computer after passing through the signal conditioning unit; the PC computer sends the control signal to the control circuit through the drive circuit, and the control circuit switches the first power supply line and the second power supply line according to the control signal of the PC computer.
3. The on-vehicle power supply monitored control system based on three-phase is pull of claim 2, characterized in that: the monitoring module also comprises a display module used for displaying the result of the analysis of the PC computer.
4. The on-vehicle power supply monitored control system based on three-phase is pull of claim 2, characterized in that: the control circuit comprises a relay K1, a relay K2, a switching device G1, a switching device G2 and double-end sliding resistors R1-R2, wherein a control end of the switching device G1 and a controller of the switching device G2 are respectively connected with an output end of the driving circuit;
the transmitting end of the switching device G1 is connected with the high-resistance end of the double-end sliding resistor R1, the low-resistance end of the double-end sliding resistor R1 is grounded, the current collecting end of the switching device G1 is connected with the relay K1, and the normally closed contact of the relay K1 is arranged on the first power supply line;
the transmitting end of the switching device G2 is connected with the low-resistance end of the double-head sliding resistor R2, the high-resistance end of the double-head sliding resistor R2 is grounded, the current collecting end of the switching device G2 is connected with the relay K2, and the normally closed contact of the relay K2 is arranged on the second power supply line.
5. The on-board power supply monitoring system based on three-phase traction is characterized in that according to any one of claims 1 to 4: the load AC-DC converter comprises a first traction four-quadrant rectifying circuit and a first DC converter, wherein the input end of the first traction four-quadrant rectifying circuit is connected with a vehicle-mounted cable, the output end of the first traction four-quadrant rectifying circuit is connected with the input end of the first DC converter, and the output end of the first DC converter is connected with a row supply load.
6. The on-board power supply monitoring system based on three-phase traction is characterized in that according to any one of claims 1 to 4: the traction AC-DC-AC converter comprises a second traction four-quadrant rectifying circuit, a second DC converter and a traction inverter, wherein the input end of the second traction four-quadrant rectifying circuit is connected with a vehicle-mounted cable, the output end of the second traction four-quadrant rectifying circuit is connected with the input end of the second DC converter, the output end of the second DC converter is connected with the input end of the traction inverter, and the output end of the traction inverter is connected with a traction motor.
7. The on-vehicle power supply monitored control system based on three-phase is pull of claim 6, characterized in that: the second direct current converter comprises switching devices S1-S10, an inductor L1, a capacitor C1 and a transformer T; the switching device S3, the switching device S4, the switching device S5, the switching device S6, the transformer T, the switching device S7, the switching device S8, the switching device S9 and the switching device S10 form a bidirectional conversion circuit;
one end of the inductor L1 is connected with the output end of the second traction four-quadrant rectification circuit, the other end of the inductor L1 is respectively connected with the first end of the switching device S1 and the first end of the switching device S2, the second end of the switching device S2 is respectively connected with one end of the capacitor C1 and the original end of the bidirectional conversion circuit, the second end of the switching device S1 and the other end of the capacitor C1 are respectively connected with the original end of the bidirectional conversion circuit, and the secondary end of the bidirectional conversion circuit is connected with the traction inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020936085.5U CN212210604U (en) | 2020-05-28 | 2020-05-28 | Vehicle-mounted power supply monitoring system based on three-phase traction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020936085.5U CN212210604U (en) | 2020-05-28 | 2020-05-28 | Vehicle-mounted power supply monitoring system based on three-phase traction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212210604U true CN212210604U (en) | 2020-12-22 |
Family
ID=73813415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020936085.5U Active CN212210604U (en) | 2020-05-28 | 2020-05-28 | Vehicle-mounted power supply monitoring system based on three-phase traction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212210604U (en) |
-
2020
- 2020-05-28 CN CN202020936085.5U patent/CN212210604U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105235536B (en) | A kind of motor train unit traction system and energy control method | |
| CN106026691B (en) | It is a kind of can independent axes control the major-minor integrated traction convertor of train | |
| CN103545901B (en) | The high-power charging device of a kind of tramcar | |
| CN109450285B (en) | Main and auxiliary integrated mode energy bidirectional flow auxiliary power supply system for rail transit vehicle | |
| CN106771792B (en) | Locomotive converter test system | |
| CN109327073A (en) | A kind of double dynamical power supply system | |
| CN112776679A (en) | Phase selection control system and control method suitable for electric locomotive passing neutral section | |
| CN110539668B (en) | EMUs emergency traction system | |
| CN201941777U (en) | Power supply cabinet of train used for AC (alternating current)-drive electrical locomotive | |
| CN212210604U (en) | Vehicle-mounted power supply monitoring system based on three-phase traction | |
| CN109301811A (en) | A kind of comprehensive direct current system | |
| CN216486129U (en) | Over-current fault control system for secondary winding of traction transformer | |
| EP2644436A1 (en) | Improved hard pre-charge for parallel inverters | |
| CN216390846U (en) | Tower machine multichannel frequency conversion control system | |
| CN110868076A (en) | DC-DC chopper device for ship regional power distribution | |
| CN202931210U (en) | Power supply unit for testing of electric locomotive | |
| CN217170464U (en) | Train energy storage and emergency redundancy integrated power supply circuit and control system | |
| CN103481799A (en) | Traction power supply control device and traction power supply system | |
| CN214069550U (en) | Overcurrent detection protection device for vehicle electrical equipment | |
| CN111186449B (en) | Electric drive system | |
| CN104242421A (en) | Railway vehicle charger system and railway vehicle | |
| CN113263924A (en) | Train energy storage and emergency redundancy integrated power supply circuit and control method and control system thereof | |
| CN110504660A (en) | A kind of trailer system and its grounding method of traction convertor | |
| CN215733485U (en) | Power supply system and electrodynamic ship | |
| CN215678620U (en) | AC/DC bow net arc test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Vehicle Power Supply Monitoring System Based on Three Phase Traction Effective date of registration: 20231127 Granted publication date: 20201222 Pledgee: Ningxia East Guarantee Co.,Ltd. Pledgor: WOLONG ELECTRIC YINCHUAN TRANSFORMER Co.,Ltd. Registration number: Y2023640000044 |