CN216016528U - Uninterrupted power supply access device and power generation vehicle using same - Google Patents
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Abstract
The utility model relates to an uninterrupted power supply access device and a power generation vehicle using the same, wherein the device comprises a first switch converter, a first static switch, a detection unit, an energy storage power supply and a controller; when the power supply is abnormal, the detection unit detects that the output end of the first switch converter loses power and outputs a first detection signal, and the controller receives the first detection signal, controls the energy storage power supply to supply power to the load and controls the first static switch to be switched off. Meanwhile, after the power generation power supply is normally started, the first switch converter controls the first switch to be turned off, the second switch is turned on, the detection unit outputs a second detection signal, the controller controls the energy storage power supply to stop outputting and controls the first static switch to be turned on after receiving the second detection signal, the power generation power supply supplies power for the load, the quick start of the energy storage power supply is matched with the millisecond-level switching speed of the first static switch, the quick response can be realized for supplying power for the load, the requirement of the load on the continuity of the power supply is met, and the protection effect on equipment is achieved.
Description
Technical Field
The application relates to the field of power supply switching, in particular to an uninterruptible power supply access device and a power generation car using the same.
Background
With the development of society, the application of emergency power supply vehicles is more and more extensive, and the emergency power supply vehicles are applied to industrial enterprises, engineering emergency, hospitals, important politics or economic activities and other places, and serve as ideal mobile standby power stations for lighting and power emergency. Emergency power source vehicles on the market are mainly fuel emergency power cars, the structure of the emergency power source vehicles is characterized in that a diesel generator set is used as a core and is provided with a control and operation system, an access cable system and a vehicle-mounted system, the diesel generator has the advantages of being good in on-load performance, but long in starting time, the requirements of a plurality of loads on power supply continuity are higher and higher at present, only millisecond-level power failure is allowed, and the starting time of the diesel generator cannot meet the requirements of the loads on the power supply continuity at present.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application provides an uninterrupted power supply access device and a power generation car using the same.
In a first aspect, the uninterruptible power supply access device provided by the present application adopts the following technical solution:
an uninterruptible power supply access device comprising:
the first switch converter comprises a first switch and a second switch, the first switch is used for being connected with a power supply, and the second switch is used for being connected with a power generation power supply;
the first switch converter is used for controlling the first switch to be switched on and controlling the second switch to be switched off when the power supply is in normal power supply, and controlling the first switch to be switched off and controlling the second switch to be switched on when the power supply is abnormal and the power generation power supply is in power supply;
a first static switch, one end of which is connected to the output end of the first switching converter, and the other end of which is used for being connected with a load;
the detection unit is arranged at the output end and used for detecting whether the output end is electrified or not, outputting a first detection signal when the output end is electrified, and outputting a second detection signal when the output end is electrified;
the first static switch is connected with the common end of the load and used for supplying power to the load;
and the controller is respectively connected with the first static switch, the detection unit, the energy storage power supply and the rectification inversion double-conversion unit, and is used for controlling the energy storage power supply to supply power to the load and controlling the first static switch to be switched off when receiving a first detection signal, and controlling the energy storage power supply to stop supplying power and controlling the first static switch to be switched on when receiving a second detection signal, so that the power supply supplies power to the load and charges the energy storage power supply.
By adopting the technical scheme, when the power supply is abnormal, the detection unit detects that the output end of the first switch converter loses power and outputs a first detection signal, and the controller receives the first detection signal, controls the energy storage power supply to supply power for the load and controls the first static switch to be switched off so as to prevent the energy storage power supply from reversely flowing to the power supply side. Meanwhile, the first switch converter sends a first starting signal in a delayed mode, the power generation power supply is started after receiving the first starting signal, the first switch converter controls the first switch to be turned off after the power generation power supply is started, the second switch is turned on, the detection unit detects that the output end of the first switch converter is electrified and outputs a second detection signal, and the controller controls the energy storage power supply to stop supplying power and controls the first static switch to be turned on after receiving the second detection signal, so that the power generation power supply supplies power for the load.
Optionally, the system further comprises a second switching converter, wherein the second switching converter comprises a third switch and a fourth switch;
the power supply comprises a first sub power supply and a second sub power supply, the third switch is used for accessing the first sub power supply, the fourth switch is used for accessing the second sub power supply, and the output end of the second switch converter is connected with the first switch;
the second switch converter is used for keeping the third switch on and the fourth switch off when the first sub power supply supplies power normally, and controlling the third switch to be turned off and controlling the fourth switch to be turned on when the first sub power supply is abnormal and the second sub power supply is normal.
By adopting the technical scheme, the second switch converter is connected with the first sub power supply and the second sub power supply, when the first sub-power supply is abnormal, the detection power supply outputs a first detection signal, the controller controls the energy storage power supply to invert and output to a load for supplying power and turns off the first static switch, meanwhile, the second switch converter turns off the third switch, turns on the fourth switch, accesses the second sub-power supply, detects that the power supply is electrified at the output end of the first switch converter, and outputs a second detection signal, the controller receives the second detection signal, controls the energy storage power supply to stop inversion output and controls the first static switch to be opened, so that the second sub-source can supply power to the load, and therefore, when the first sub-source fails, the second sub-source responds to the power supply firstly, when the first sub power supply and the second sub power supply both fail, the power generation power supply is started to provide one more guarantee for the power supply of the load.
Optionally, the energy storage power source is a flywheel energy storage unit.
By adopting the technical scheme, the flywheel energy storage unit has the advantages of quick charging and quick discharging, and the output power of the flywheel energy storage unit is larger than that of a common storage battery on the premise of the same volume.
Optionally, the energy storage power supply is a super capacitor.
By adopting the technical scheme, the super capacitor unit has the advantages of quick charging and quick discharging, and the super capacitor has larger output power than a common storage battery on the premise of the same volume.
Optionally, both the first switching converter and the second switching converter are ATS.
Optionally, the power supply further comprises a rectification inversion double-conversion unit, one end of the rectification inversion double-conversion unit is connected with the energy storage power supply, and the other end of the rectification inversion double-conversion unit is connected with the first static switch and the common end of the load.
Through adopting above-mentioned technical scheme, the two transform units of rectification contravariant can carry out the rectification to the alternating current power supply of first sub-power, second sub-power or power generation power supply for the energy storage power supply charges, and the two transform units of rectification contravariant can also be when alternating current power supply loses the power with the direct current power supply contravariant output alternating current power supply of energy storage power supply, in order to supply the load to use.
Optionally, the method further includes:
an input switch disposed between the first switching converter and the first static switch;
and one end of the first branch circuit is connected with the common end of the first switch converter and the input switch, the other end of the first branch circuit is used for being connected with a load, a second static switch is arranged on the first branch circuit, and the first branch circuit is used for switching off the first static switch and the input switch and switching on the second static switch when a line where the first static switch is located has a fault.
By adopting the technical scheme, when the line where the first static switch is located has a fault, the first static switch and the input switch can be switched off, the second static switch can be switched on, and the first branch circuit is used as a standby circuit to maintain the power supply to the load.
Optionally, the rectifier and inverter circuit further comprises an output switch, wherein one end of the output switch is connected with the static switch, the rectifier and inverter double conversion unit and the common end of the first branch, and the other end of the output switch is used for being connected with a load.
By adopting the technical scheme, the output switch can be used as a main switch of the power supply, the power generation power supply and the energy storage power supply, and the power supply, the power generation power supply and the energy storage power supply can be conveniently controlled to be cut off and connected with a load.
In a second aspect, the present application provides a power generation vehicle comprising an uninterruptible power supply access device as described in the first aspect.
Through adopting above-mentioned technical scheme, the power-generating cars is as emergent power-generating cars, when the power supply is unusual, can be by the temporary load power supply of energy storage power supply fast reaction to start the power generation source simultaneously, provide stable power supply for the load before the power supply restoration, satisfy the requirement of load to power supply continuity.
The application discloses an uninterrupted power supply access device, when power supply source appears unusually, detecting element detects the output of first switching converter and loses the electricity to export first detected signal, the controller receives first detected signal, and control energy storage power supply is the load power supply, and control first static switch turn-offs, in order to prevent energy storage power supply backflow to power supply source side. Meanwhile, after the power generation power supply is normally started, the first switch converter is controlled to be turned off, the second switch is controlled to be turned on, the detection unit detects that the output end of the first switch converter is electrified, and outputs a second detection signal, and the controller controls the energy storage power supply to stop supplying power and controls the first static switch to be turned on after receiving the second detection signal, so that the power generation power supply supplies power for the load.
Drawings
Fig. 1 is a schematic circuit diagram of an uninterruptible power supply access device according to an embodiment of the present disclosure.
Fig. 2 is a schematic system structure diagram of an uninterruptible power supply access device according to an embodiment of the present application.
Description of reference numerals: 1. a power supply; 11. a first sub power supply; 12. a second sub power supply; 2. a power generation source; 3. a load; 4. an energy storage power supply; 5. a detection unit; 6. a controller; 7. a rectification inversion double-conversion unit; 81. a first branch; 82. a second branch.
Detailed Description
Various exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
The emergency power generation vehicle with the diesel generator set as the core has the advantage of good on-load performance, but the diesel generator is long in starting time, even if the emergency power generation vehicle is provided with a quick starting device, the starting time is about 10s, but the requirement of a lot of loads 3 on power supply continuity is high, only millisecond-level power failure is allowed, otherwise, the large influence is caused, and the starting time of the existing diesel generator cannot meet the requirement of the loads 3 on the power supply continuity.
The application discloses uninterrupted power supply access device, refer to fig. 1 and 2, includes a first switching converter ATS-1, a first static switch S5, a detection unit 5, an energy storage power source 4 and a controller 6.
The first switching converter ATS-1 includes a first switch S1 and a second switch S2, the first switch S1 is used for connecting to the power supply 1, and the second switch S2 is used for connecting to the power generation source 2. When the power supply 1 supplies power normally, the first switching converter ATS-1 controls the first switch S1 to be turned on and controls the second switch S2 to be turned off, that is, the load 3 is supplied with power by the power supply 1. When the power supply 1 is abnormal, for example, when the power supply 1 is powered off, the first switching converter ATS-1 performs delay control to send out a first starting signal, the power generation power supply 2 starts power supply after receiving the first starting signal, and after the first switching converter ATS-1 detects that the power generation power supply 2 supplies power, the first switch S1 is turned off and the second switch S2 is turned on, so that the power generation power supply 2 can supply power to the load 3. Wherein, the power supply 1 is commercial power, and the power generation 2 can be a diesel generator.
Because the diesel generator needs a certain starting time, the load 3 cannot be supplied with power at the time interval between the switching of the commercial power to the diesel generator, and at the moment, the energy storage power supply 4 can be started to supply power to the load 3 at the switching interval so as to meet the requirement of the load 3 on the continuity of the power supply.
Specifically, the energy storage power source 4 is connected with the load 3 and used for supplying power to the load 3; the detection unit 5 is arranged at the output end of the first switching converter ATS-1 and used for detecting whether the output end is electrified, when the output end of the first switching converter ATS-1 is electrified, namely the power supply 1 and the power generation power supply 2 do not normally supply power, the detection power supply unit outputs a first detection signal, and when the output end of the first switching converter is electrified, namely the power supply 1 or the power generation power supply 2 normally supplies power, the detection unit 5 outputs a second detection signal; the first static switch S5 has one end connected to the output of the first switching converter ATS-1 and the other end for connection to the load 3.
The controller 6 is respectively connected with the energy storage power supply 4, the detection unit 5 and the first static switch S5, and when receiving the first detection signal, controls the energy storage power supply 4 to start up to supply power to the load 3, and simultaneously controls the first static switch S5 to turn off to prevent the energy storage power supply 4 from reversely flowing to the power supply 1 side; the controller 6, upon receiving the second detection signal, controls the energy storage power source 4 to be turned off, and at the same time controls the first static switch S5 to be turned on, so that the power supply 1 or the power generation 2 can supply power to the load 3.
Wherein, energy storage power supply 4 can be flywheel energy storage unit, and the flywheel energy storage has energy storage density height, fills soon and puts, unlimited charge and put advantages such as number of times, long service life, as energy storage power supply 4 in this application, can quick response for load 3 power supplies, satisfies the requirement of load 3 to power supply continuity. The energy storage power supply 4 can also be a super capacitor, the super capacitor is high in charging speed, good in power density and long in service life, and can be quickly charged and quickly discharged to meet the requirement of the load 3 on the continuity of power supply.
And the flywheel energy storage and the super capacitor have the capacity of resisting large-load impact, when the load fluctuation is large, the flywheel energy storage or the super capacitor can balance the large load, the impact of the load on the diesel generator is reduced, the flexible starting and the load loading of the diesel generator are realized, the selection capacity of the diesel generator is reduced, the service life of the diesel generator is prolonged, and meanwhile, the better electric energy quality is ensured to be output.
The first static switch S5 has a switching-off speed of millisecond level, can be used in cooperation with a flywheel energy storage or a super capacitor, can quickly respond, and has the capability of resisting large load impact, reduces the integral failure rate of a system and improves the short-time tolerance capability of short-circuit current of equipment compared with the conventional online UPS so as to protect the equipment.
In some embodiments, in order to improve the reliability of the power supply, a second switching converter ATS-2 is further provided, an output terminal of the second switching converter ATS-2 is connected to the first switch S1 for introducing the power supply 1 before the first switch S1, specifically, the power supply 1 includes a first sub power source 11 and a second sub power source 12, the second switching converter ATS-2 includes a third switch S3 and a fourth switch S4, the third switch S3 is used for accessing the first sub power source 11, the fourth switch S4 is used for accessing the second sub power source 12, and the first sub power source 11 and the second sub power source 12 may be two-way commercial power.
When the first sub power supply 11 supplies power normally, the second switch converter ATS-2 controls the third switch S3 to turn on and controls the fourth switch S4 to turn off, and when the first sub power supply 11 is abnormal, the second switch converter ATS-2 determines that the second sub power supply 12 supplies power normally, and then the second switch converter ATS-2 controls the third switch S3 to turn off and controls the fourth switch S4 to turn on, so that the second sub power supply 12 can supply power to the load 3.
The second sub-power source 12 is the commercial power, the time for switching from the first sub-power source 11 to the second sub-power source 12 is less than 1.5S, but the switching time of the second switching converter ATS-2 is still not sufficient to meet the requirement of the load 3 on the power supply continuity, so the controller 6 controls the energy storage power source 4 to supply power to the load 3 during the time interval for switching from the first sub-power source 11 to the second sub-power source 12.
Specifically, after the first sub-power source 11 is powered off, the detection unit 5 detects that the output end of the first switching converter ATS-1 is powered off, and outputs a first detection signal, the controller 6 receives the first detection signal, controls the energy storage power source 4 to supply power, and controls the first static switch S5 to be turned off, after the second switching converter ATS-2 is successfully switched to the second sub-power source 12, the detection unit 5 outputs a second detection signal, and the controller 6 controls the energy storage power source 4 to stop supplying power, and controls the first static switch S5 to be turned on, so that the second sub-power source 12 can supply power to the load 3.
It should be noted that, during the process of supplying power by the first sub-power source 11, switching from the first sub-power source 11 to the second sub-power source 12, and supplying power by the second sub-power source 12, the first switches S1 all maintain the on state, the switching time of the second switch converter is less than 1.5S, that is, the power supply 1 is still abnormal after 1.5S, which indicates that the first sub-power source 11 and the second sub-power source 12 are both abnormal, that is, the power supply 1 is wholly abnormal, at this time, the first switch converter ATS-1 sends a start signal to the generator, after the power generation power source 2 is started, the first switch S1 is controlled to be turned off and the second switch S2 is controlled to be turned on, and at the time interval of switching from the power supply 1 to the power generation power source 2, the controller 6 controls the energy storage power source 4 to supply power to the load 3, so as to realize the uninterrupted power supply to the load 3.
In the embodiment of the present application, both the first switching converter ATS-1 and the second switching converter ATS-2 may be ATS.
In the embodiment of the present application, the power supply further includes a rectification and inversion dual-conversion unit 7 disposed between the energy storage power source 4 and the load 3, one end of the rectification and inversion dual-conversion unit 7 is connected to the energy storage power source 4, and the other end is connected to a common end of the first static switch S5 and the load 3. The rectification inversion double-conversion unit 7 is used for inverting the direct current output by the energy storage power supply 4 into alternating current available for the load 3 when the energy storage power supply 4 supplies power. After the energy storage power supply 4 is discharged, when the power supply 1 or the power generation power supply 2 supplies power to the load 3, the power supply 1 or the power generation power supply 2 can charge the energy storage power supply 4, and the rectification inversion double-conversion unit 7 can rectify alternating current output by the power supply 1 or the power generation power supply 2 into direct current to charge the energy storage power supply 4. Specifically, the rectification-inversion double-conversion unit 7 may be a rectification-inversion circuit.
In some embodiments, a filtering unit for filtering out harmonics may be disposed between the first static switch, the rectifying and inverting double conversion unit 7 and the load 3.
In the embodiment of the present application, in order to supply power to the load 3 even when the circuit where the first static switch S5 is located has a fault, an input switch S7 is further disposed between the first switching converter ATS-1 and the first static switch S5, and the input switch S7 is used for controlling on/off of the circuit where the first static switch S5 is located. And a first branch 81 is further provided, one end of the first branch 81 is connected to a common end of the first switching converter ATS-1 and the input switch S7, and the other end is used for connecting to the load 3, a second static switch S6 is provided on the first branch 81, in a normal state, the second static switch S6 is in an off state, when a circuit where the first static switch S5 is located fails, the controller 6 may control the first static switch S5 and the input switch S7 to be off, the second static switch S6 is on, and the first branch is used as a standby circuit to supply power to the load 3.
In some embodiments, the load further includes a second branch 82, the second branch 82 is connected in parallel with the first branch 81, and a bypass switch S9 is disposed on the second branch 82, and is used as a secondary standby circuit to supply power to the load 3 when the circuit in which the first static switch is located, the first branch 81 is in a fault, or the equipment is overhauled. The provision of the first branch 81 and the second branch 82 further improves the reliability of the power supply.
In the embodiment of the present application, the power supply further includes an output switch S8 connected to the controller 6, the output switch S8 is disposed at the total output end of the present application, one end of the output switch is connected to the static switch, the rectifying and inverting dual-conversion unit 7, the common end of the first branch 81 and the second branch 82, the other end of the output switch is used for being connected to the load 3, the output switch S8 is used as the total switch of the power supply 1, the power generation 2 and the energy storage 4, and it is convenient to control the total cut-off and connection between the power supply 1, the power generation 2 and the energy storage 4 and the load 3.
In the embodiment of the application, the cable is connected with a quick plug head, and can be quickly and simply connected with commercial power or a diesel generator and the like to supply power to the load 3.
On the other hand, the application also provides a power generation vehicle comprising the uninterruptible power supply access device.
In some embodiments, an emergency power supply of the power generation car is used as the power generation power supply 2, the first switching converter is connected to the power supply 1 and the power generation power supply 2, when the power supply of the power supply 1 is abnormal, the energy storage power supply 4 can quickly respond to the power supply of the load 3 temporarily, and the power generation power supply 2 is started at the same time, so that a stable power supply is provided for the load 3 before the power supply 1 is repaired, and the requirement of the load 3 on the continuity of the power supply is met.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. An uninterruptible power supply access device, comprising:
a first switching converter comprising a first switch for switching in a power supply (1) and a second switch for switching in a power generation supply (2);
the first switch converter is used for controlling the first switch to be switched on and controlling the second switch to be switched off when the power supply (1) supplies power normally, and controlling the first switch to be switched off and controlling the second switch to be switched on when the power supply (1) supplies power abnormally and the power generation power supply supplies power;
a first static switch, one end of which is connected to the output end of the first switching converter and the other end of which is used for being connected with a load (3);
the detection unit (5) is arranged at the output end and used for detecting whether the output end is electrified or not, outputting a first detection signal when the output end is electrified, and outputting a second detection signal when the output end is electrified;
the energy storage power supply (4) is connected with the first static switch and the common end of the load (3) and is used for supplying power to the load (3);
and the controller (6) is respectively connected with the first static switch, the detection unit (5), the energy storage power supply (4) and the rectification inversion double-conversion unit and used for controlling the energy storage power supply (4) to supply power for the load (3) and controlling the first static switch to be turned off when receiving the first detection signal and controlling the energy storage power supply (4) to stop supplying power and controlling the first static switch to be turned on when receiving the second detection signal, so that the power supply (1) supplies power for the load (3) and charges the energy storage power supply (4).
2. The uninterruptible power supply access device of claim 1, further comprising a second switching converter comprising a third switch and a fourth switch;
the power supply (1) comprises a first sub power supply (11) and a second sub power supply (12), a third switch is used for connecting in the first sub power supply (11), a fourth switch is used for connecting in the second sub power supply (12), and the output end of the second switch converter is connected with the first switch;
the second switch converter is used for keeping the third switch on and the fourth switch off when the first sub power supply (11) supplies power normally, and controlling the third switch to be turned off and controlling the fourth switch to be turned on when the first sub power supply (11) supplies power abnormally and the second sub power supply supplies power.
3. Uninterruptible power supply access device according to claim 1 or 2, characterized in that the energy storage power source (4) is a flywheel energy storage unit.
4. Uninterruptible power supply access device according to claim 1 or 2, characterized in that the energy storage power source (4) is a super capacitor.
5. The uninterruptible power supply access device according to claim 1 or 2, wherein the first switching converter and the second switching converter are both ATS.
6. The uninterruptible power supply access device according to claim 1 or 2, further comprising a rectification inversion double conversion unit (7), wherein one end of the rectification inversion double conversion unit (7) is connected to the energy storage power source (4), and the other end is connected to the first static switch and the common end of the load (3).
7. The uninterruptible power supply access device of claim 6, further comprising:
an input switch disposed between the first switching converter and the first static switch;
and one end of the first branch (81) is connected with the common end of the first switching converter and the input switch, the other end of the first branch is used for being connected with a load (3), a second static switch is arranged on the first branch (81), and the first branch (81) is used for switching off the input switch and switching on the second static switch when a line where the first static switch is located has a fault.
8. The uninterruptible power supply access device according to claim 7, further comprising an output switch, wherein one end of the output switch is connected to a common end of the static switch, the rectifying-inverting double conversion unit (7) and the first branch (81), and the other end of the output switch is used for being connected to a load (3).
9. A power generation vehicle comprising an uninterruptible power supply access device as claimed in any one of claims 1 to 8.
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| CN202122293499.8U CN216016528U (en) | 2021-09-22 | 2021-09-22 | Uninterrupted power supply access device and power generation vehicle using same |
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| CN202122293499.8U CN216016528U (en) | 2021-09-22 | 2021-09-22 | Uninterrupted power supply access device and power generation vehicle using same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024002250A1 (en) * | 2022-06-30 | 2024-01-04 | 施耐德电器工业公司 | Quick automatic transfer switching circuit and a control method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024002250A1 (en) * | 2022-06-30 | 2024-01-04 | 施耐德电器工业公司 | Quick automatic transfer switching circuit and a control method therefor |
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