CN115473248A - UPS and PCS hybrid power supply system - Google Patents
UPS and PCS hybrid power supply system Download PDFInfo
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- CN115473248A CN115473248A CN202110647084.8A CN202110647084A CN115473248A CN 115473248 A CN115473248 A CN 115473248A CN 202110647084 A CN202110647084 A CN 202110647084A CN 115473248 A CN115473248 A CN 115473248A
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- pcs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
Abstract
The utility model provides a UPS and PCS's mixed power supply system, be connected with electric wire netting and load electricity, and contain: an energy storage module comprising a battery; the first electric energy conversion circuit has a bidirectional electric energy conversion function and comprises a first electric energy transmission end and a second electric energy transmission end, and the first electric energy transmission end is electrically connected with a power grid; the second electric energy conversion circuit has a bidirectional electric energy conversion function and comprises a third electric energy transmission end and a fourth electric energy transmission end, the third electric energy transmission end, the second electric energy transmission end and the energy storage module are electrically connected, and the fourth electric energy transmission end is electrically connected with a load; the first end of the bypass switch is electrically connected to the power grid and the first electric energy transmission end, and the second end of the bypass switch is electrically connected to the fourth electric energy transmission end and the load; the UPS and the PCS hybrid power supply system conforms to at least one PCS grid-connected regulation certification and UPS regulation certification.
Description
Technical Field
The disclosure relates to the field of power supply systems, in particular to a hybrid power supply system of a UPS and a PCS.
Background
Today, it has become a common consensus for the development of human society to solve the shortage of fossil energy and to achieve carbon neutralization, and the solution is to utilize new energy sources, such as solar energy and wind energy. The new energy law in taiwan states that a large power consumer in taiwan needs to allocate more than 10% of renewable energy power generation equipment and energy storage equipment or purchase a certain amount of renewable energy power and certificates. In order to meet the requirements of energy storage devices in new energy laws and regulations, the simplest method is to add a converter and a battery in a Power Conditioning System (PCS) in an original Power supply System, so that the electric energy of the battery can be injected into a Power grid through the converter, however, if the original Power supply System is a Uninterruptible Power System (UPS), the foregoing method will cause two sets of batteries to exist in the Power supply System.
In addition, UPS manufacturers are now aware that the battery of a UPS is in a backup state for a long time, which is a waste of resources, and if the battery of the UPS can be effectively used, for example, the power of the battery of the UPS is fed back to the power grid, additional benefits will be brought. However, in the UPS, regulations (IEC 62040) stipulate that the energy of the battery is not allowed to be fed back to the grid, so the energy of the UPS rectifier flows in a single direction, i.e., the energy transfer direction only flows from the grid to the battery, and thus the UPS does not have the condition of exchanging energy with the grid at present.
Therefore, there is a need to develop a UPS and PCS hybrid power supply system to solve the problems faced by the prior art.
Disclosure of Invention
The purpose of the present disclosure is to provide a hybrid power supply system of a UPS and a PCS, so as to solve the problem that the investment cost of the UPS is too high because a conventional UPS does not have a condition of exchanging energy with a power grid and therefore, in order to comply with new energy laws and regulations, only a converter and a battery of the PCS can be additionally added under an original architecture.
To achieve the above object, the present disclosure provides a hybrid power supply system of UPS and PCS, electrically connected to a load and a power grid, comprising: an energy storage module comprising a battery; the first electric energy conversion circuit has a bidirectional electric energy conversion function and comprises a first electric energy transmission end and a second electric energy transmission end, and the first electric energy transmission end is electrically connected with a power grid; the second electric energy conversion circuit has a bidirectional electric energy conversion function and comprises a third electric energy transmission end and a fourth electric energy transmission end, the third electric energy transmission end, the second electric energy transmission end and the energy storage module are electrically connected, and the fourth electric energy transmission end is electrically connected with a load; the first end of the bypass switch is electrically connected to the power grid and the first electric energy transmission end, and the second end of the bypass switch is electrically connected to the fourth electric energy transmission end and the load; the UPS and the PCS hybrid power supply system conforms to at least one PCS grid-connected regulation certification and UPS regulation certification.
Drawings
Fig. 1 is a schematic circuit diagram of a UPS and PCS hybrid power supply system according to a preferred embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a power transmission direction of the UPS and PCS hybrid power supply system of FIG. 1 during a first operation mode;
FIG. 3 is a schematic diagram of the power transfer directions of the UPS and PCS hybrid power supply system of FIG. 1 during a second mode of operation;
FIG. 4 is a schematic diagram of the power transfer directions of the UPS and PCS hybrid power supply system of FIG. 1 when operating in a third mode of operation;
FIG. 5 is a schematic diagram of the power transmission direction of the UPS and PCS hybrid power supply system of FIG. 1 operating in a fourth operating mode;
fig. 6 is a schematic diagram of a power transmission direction of the UPS and PCS hybrid power supply system of fig. 1 operating in a fifth operating mode.
Description of the symbols
1: UPS and PCS hybrid power supply system
2: electric network
3: load(s)
10: energy storage module
11: first electric energy conversion circuit
12: second electric energy conversion circuit
13: bypass switch
100: battery with a battery cell
14: first controller
15: second controller
101: battery management system
4: energy management system
Detailed Description
Some exemplary embodiments that incorporate the features and advantages of the present disclosure will be described in detail in the specification which follows. It is to be understood that the disclosure is capable of various modifications in various embodiments without departing from the scope of the disclosure, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.
Please refer to fig. 1, which is a schematic circuit diagram of a UPS and PCS hybrid power supply system according to a preferred embodiment of the present disclosure. As shown in fig. 1, the UPS and PCS hybrid power supply system 1 of the present embodiment is electrically connected between a power grid 2 and a load 3, and includes an energy storage module 10, a first power conversion circuit 11, a second power conversion circuit 12, and a bypass switch 13.
The energy storage module 10 includes a battery 100 that can be charged or discharged, the battery 100 being, for example, but not limited to, a secondary battery or a lithium battery. The first power conversion circuit 11 has a bidirectional power conversion function and includes a first power transmission terminal and a second power transmission terminal, wherein the first power transmission terminal is electrically connected to the power grid 2. The second power conversion circuit 12 has a bidirectional power conversion function and includes a third power transmission terminal and a fourth power transmission terminal, wherein the third power transmission terminal is electrically connected to the second power transmission terminal of the first power conversion circuit 11 and the energy storage module 10, so that the second power conversion circuit 12 is connected in series with the first power conversion circuit 11, and the fourth power transmission terminal is electrically connected to the load 3.
The bypass switch 13 includes a first end and a second end, wherein the first end of the bypass switch 13 is electrically connected to the grid 2 and the first power transmission end of the first power conversion circuit 11, and the second end of the bypass switch 13 is electrically connected to the fourth power transmission end of the second power conversion circuit 12 and the load 3, so that the bypass switch 13 is connected in parallel with the series circuit formed by the first power conversion circuit 11 and the second power conversion circuit 11 in series, and when the bypass switch 13 is switched to the on state, the first end and the second end of the bypass switch 1 are in the on state, otherwise, when the bypass switch 13 is switched to the off state, the first end and the second end of the bypass switch 1 are in the off state. In some embodiments, the bypass switch 13 includes a switch and a bidirectional thyristor connected in series.
In addition, in the embodiment, the hybrid power supply system 1 of the UPS and the PCS complies with at least one PCS grid-connected regulation certification and the UPS regulation certification, and further, the first power conversion circuit 11 and the second power conversion circuit 12 of the hybrid power supply system 1 of the UPS and the PCS comply with at least one PCS grid-connected regulation certification and the UPS regulation certification, respectively, and the hybrid power supply system 1 of the UPS and the PCS further controls the operation manner of the first power conversion circuit 11, so that the first power conversion circuit 11 is switched to operate in a manner of implementing the PCS power conversion circuit, or switched to operate in a manner of implementing the UPS power conversion circuit, and similarly, the hybrid power supply system 1 of the UPS and the PCS further controls the operation manner of the second power conversion circuit 12, so that the second power conversion circuit 12 is switched to operate in a manner of implementing the PCS power conversion circuit, or switched to operate in a manner of implementing the UPS power conversion circuit. It should be noted that, those skilled in the art can clearly understand that the power conversion circuit complying with the UPS regulation certification and the power conversion circuit complying with the PCS grid-connected regulation certification have no essential difference in circuit architecture, and mainly differ in control and operation modes.
For example, the hybrid power supply system 1 of the UPS and PCS converts the power provided by the power grid 2 via the first power conversion circuit 11 and stores the converted power in the battery 100, so that when an abnormality or power failure occurs in the power grid 2, the hybrid power supply system 1 of the UPS and PCS can convert the power of the battery 100 via the second power conversion circuit 12 and provide the converted power to the load 3, and in this operation mode, the first power conversion circuit 11 and the second power conversion circuit 12 both operate as UPS power conversion circuits. In the working mode, the first power conversion circuit 11 and the second power conversion circuit 12 both operate in the manner of a PCS power conversion circuit, and the power grid 2 of the UPS and PCS hybrid power supply system 1 exchanges active power and reactive power with the battery 100 through the first power conversion device 11 and a first path formed by the second power conversion circuit 12 and the bypass switch 13. In the operation mode, the first power conversion circuit 11 operates as a PCS power conversion circuit, and the second power conversion circuit 12 operates as a UPS power conversion circuit, in which the grid 2 of the UPS and PCS hybrid power supply system 1 exchanges active power and reactive power with the battery 100 through the first power conversion device 11, and the electric energy provided by the battery 100 is converted by the second power conversion device 12 and then provided to the load 3. It is understood that the hybrid power supply system 1 of the UPS and the PCS can also operate in other operation modes, such that the first power conversion circuit 11 and the second power conversion circuit 12 operate as either a UPS power conversion circuit or a PCS power conversion circuit, which is not described herein again.
In the above embodiment, when the first power conversion circuit 11 is switched to operate in a manner of implementing a PCS power conversion circuit, that is, when energy exchange of active power and reactive power between the grid 2 and the battery 100 is implemented, the first power conversion circuit 11 is provided with a grid support function, which may implement at least one of functions including frequency autoregulation, voltage autoregulation, and dynamic grid support function. Similarly, when the second power conversion circuit 12 is switched to operate in a manner of implementing a PCS power conversion circuit, that is, to implement energy exchange of active power and reactive power between the power grid 2 and the battery 100, the second power conversion circuit 12 also has a power grid support function, and can implement at least one of functions including automatic frequency adjustment, automatic voltage adjustment, and dynamic power grid support.
In some implementations, at least one PCS grid-tie regulation includes at least one of IEEE1547, VDE-AR-N4110, VDE-AR-N4105, AS 4777.2, or G99, and a UPS regulation includes at least one of IEC62040 or UL 1778.
In some embodiments, the first power conversion circuit 11 has a bidirectional power conversion function, specifically, the ac power provided by the power grid 2 can be converted into dc power by the first power conversion circuit 11 and provided to the battery 100 and/or the third power transmission terminal of the second power conversion circuit 12, and the dc power provided by the battery 100 and/or the dc power at the third power transmission terminal of the second power conversion circuit 12 can also be converted into ac power by the first power conversion circuit 11 and fed back to the power grid 2. The second electric energy conversion circuit 12 also has a bidirectional electric energy conversion function, specifically, the ac power provided by the power grid 2 can be converted into dc power by the second electric energy conversion circuit 12 after passing through the bypass switch 13 and provided to the battery 100, and the dc power provided by the battery 100 can also be converted into ac power by the second electric energy conversion circuit 12 and fed back to the power grid 2 through the bypass switch 13.
In some embodiments, the UPS and PCS hybrid power supply system 1 further includes a third power conversion circuit, such as but not limited to a DC-DC conversion circuit, the DC-DC conversion circuit includes a first terminal and a second terminal, the first terminal of the DC-DC conversion circuit is electrically connected to the second power transmission terminal of the first power conversion circuit 11 and the third power transmission terminal of the second power conversion circuit 12, and the second terminal of the DC-DC conversion circuit is electrically connected to the energy storage module 10.
In some embodiments, the UPS and PCS hybrid power system 1 further includes a first controller 14 and a second controller 15. The first controller 14 controls the operation of the first power conversion circuit 11 and collects operation information of the first power conversion circuit 11, and further, the first controller 14 controls the first power conversion circuit 11 to switch between the UPS power conversion circuit operation mode and the PCS power conversion circuit operation mode. The second controller 15 controls the operation of the second power conversion circuit 12 and collects operation information of the second power conversion circuit 12, and further, the second controller 15 may control the second power conversion circuit 12 to switch between the UPS power conversion circuit operation mode and the PCS power conversion circuit operation mode.
In addition, the energy storage module 10 further includes a battery management system 101, and the battery management system 101 may be configured to control the battery 100 to perform a charging operation or a discharging operation. Furthermore, the first controller 14, the second controller 15 and the battery management system 101 are further in communication with the energy management system 4, and are coordinated by the energy management system 4 to correspondingly control the first power conversion circuit 11, the second power conversion circuit 12 and the battery 100, respectively, and the energy management system 4 may be located in an external host, and in some embodiments, the energy management system 4 may also be located in the hybrid power supply system 1 of the UPS and the PCS.
The operation of the UPS and PCS hybrid power supply system 1 of the present disclosure will be described below with reference to fig. 2 to 6. Fig. 2 to fig. 6 are schematic diagrams of power transmission directions of the UPS and PCS hybrid power supply system 1 shown in fig. 1 when operating in a first operating mode, fig. 3 is a schematic diagram of power transmission directions of the UPS and PCS hybrid power supply system 1 shown in fig. 1 when operating in a second operating mode, fig. 4 is a schematic diagram of power transmission directions of the UPS and PCS hybrid power supply system 1 shown in fig. 1 when operating in a third operating mode, fig. 5 is a schematic diagram of power transmission directions of the UPS and PCS hybrid power supply system 1 shown in fig. 1 when operating in a fourth operating mode, and fig. 6 is a schematic diagram of power transmission directions of the UPS and PCS hybrid power supply system 1 shown in fig. 1 when operating in a fifth operating mode. As shown in fig. 2 to 6, the hybrid power supply system 1 of the UPS and PCS of the present disclosure can operate in five different operation modes. When the power supply of the power grid 2 is normal and the load 3 does not need to operate, the UPS and PCS hybrid power supply system 1 operates in the first operating mode, and as shown in fig. 2, the bypass switch 13 is turned on, the first power conversion circuit 11 and the second power conversion circuit 12 operate, and the power grid 2 exchanges active power and reactive power with the battery 100 through the first path formed by the second power conversion circuit 12 and the bypass switch 13 and through the first power conversion circuit 11. In this case, the hybrid power supply system 1 of the UPS and the PCS can increase power capacity by operating the first power conversion circuit 11 and the second power conversion circuit 12 simultaneously. In the first operating mode, the first power conversion circuit 11 and the second power conversion circuit 12 are respectively switched to operate in a manner of implementing a PCS power conversion circuit.
When the grid 2 is supplying power normally and the load 3 needs to operate, the UPS and PCS hybrid power supply system 1 operates in the second operating mode, and as shown in fig. 3, the bypass switch 13 is turned on, the first power conversion circuit 11 operates and the second power conversion circuit 12 is in standby, the grid 2 supplies power to the load 3 through the bypass switch 13, and the grid 2 exchanges active power and reactive power with the battery 100 through the first power conversion circuit 11. In the second operating mode, the first power conversion circuit 11 is switched to operate in a manner that implements a PCS power conversion circuit.
When the load 3 needs to operate, but the voltage of the power grid 2 is abnormal, so that the power supply quality cannot meet the requirement of the load 2, the hybrid power supply system 1 of the UPS and the PCS operates in the third operating mode, as shown in fig. 4, the bypass switch 13 is turned off, the first power conversion circuit 11 and the second power conversion circuit 12 operate, the power grid 2 exchanges active power and reactive power with the battery 100 through the first power conversion circuit 1, and the power provided by the battery 100 is converted and provided to the load 3 through the second power conversion circuit 12. In a third operating mode, the first power conversion circuit 11 is switched to operate in a manner that implements a PCS power conversion circuit, and the second power conversion circuit 12 is switched to operate in a manner that implements a UPS power conversion circuit.
When the power grid 2 is abnormal or power failure and the load 3 needs to operate and the power capacity of the second power conversion circuit 12 is sufficient for the load 3, the UPS and PCS hybrid power supply system 1 operates in the fourth operating mode, as shown in fig. 5, the bypass switch 13 is turned off, the first power conversion circuit 11 is in a standby state and the second power conversion circuit 12 operates, and the power provided by the battery 100 is converted by the second power conversion circuit 12 and provided to the load 3. In a fourth mode of operation, the second power conversion circuit 12 switches to operate in a manner that implements a UPS power conversion circuit.
When the power grid 2 is abnormal or power failure and the load 3 needs to operate, and the power capacity of the second power conversion circuit 12 is not enough to satisfy the load 3, the UPS and PCS hybrid power supply system 1 operates in the fifth operating mode, and as shown in fig. 6, the bypass switch 13 is turned on, the first power conversion circuit 11 and the second power conversion circuit 12 operate, the power provided by the battery 100 is provided to the load 2 through the second path formed by the first power conversion circuit 11 and the bypass switch 13 and through the second power conversion circuit 12, and the UPS and PCS hybrid power supply system 1 can simultaneously operate through the first power conversion circuit 11 and the second power conversion circuit 12 to increase the power capacity. In the fifth operating mode, the first power conversion circuit 11 and the second power conversion circuit 12 are respectively switched to operate in a manner of implementing a UPS power conversion circuit.
In summary, the UPS and PCS hybrid power supply system of the present disclosure conforms to at least one of the PCS grid-connected regulation certification and the UPS regulation certification, and further the first power conversion circuit and the second power conversion circuit can perform corresponding switching in both the operation mode of the UPS power conversion circuit and the operation mode of the PCS power conversion circuit according to different operation modes, so that the UPS and PCS hybrid power supply system can meet the new energy regulation requirement only by one set of energy storage modules 10, and also meet the uninterrupted power supply requirement of the load, and thus, the investment cost of the UPS and PCS hybrid power supply system can be greatly reduced. Furthermore, when the first power conversion circuit or the second power conversion circuit operates in a manner of implementing the PCS power conversion circuit, the first power conversion circuit or the second power conversion circuit may implement energy exchange between active power and reactive power between the power grid and the battery, that is, have a power grid support function, so that the potential of the battery of the energy storage module may be effectively utilized, for example, the electric energy of the battery is fed back to the power grid to provide a power grid auxiliary service, thereby enabling the hybrid power supply system of the UPS and the PCS to have additional benefits.
Claims (11)
1. A hybrid power supply system of UPS and PCS, electrically connected to a load and a power grid, comprising:
an energy storage module comprising a battery;
the first electric energy conversion circuit has a bidirectional electric energy conversion function and comprises a first electric energy transmission end and a second electric energy transmission end, and the first electric energy transmission end is electrically connected with the power grid;
the second electric energy conversion circuit has a bidirectional electric energy conversion function and comprises a third electric energy transmission end and a fourth electric energy transmission end, wherein the third electric energy transmission end, the second electric energy transmission end and the energy storage module are electrically connected, and the fourth electric energy transmission end is electrically connected with the load; and
a bypass switch, a first end of which is electrically connected to the grid and the first power transmission end, and a second end of which is electrically connected to the fourth power transmission end and the load;
the UPS and the PCS hybrid power supply system conforms to at least one PCS grid-connected regulation certification and one UPS regulation certification.
2. The UPS and PCS hybrid power supply system of claim 1 wherein the first and second power conversion circuits are grid-supported and include at least one of frequency autoregulation, voltage autoregulation, and dynamic grid support.
3. The hybrid power system of UPS and PCS according to claim 1 wherein said at least one PCS grid tie regulation includes at least one of IEEE1547, VDE-AR-N4110, VDE-AR-N4105, AS 4777.2, or G99, said UPS regulation includes at least one of IEC62040 or UL 1778.
4. The hybrid power system of UPS and PCS of claim 1 wherein the hybrid power system of UPS and PCS operates in a first mode of operation, the bypass switch is conductive, the first power conversion circuit and the second power conversion circuit operate, and the grid exchanges active and reactive power with the battery via a first path formed by the second power conversion circuit and the bypass switch and via the first power conversion circuit.
5. The hybrid power system of UPS and PCS of claim 1 wherein the hybrid power system of UPS and PCS operates in a second mode of operation, the bypass switch is conductive, the first power conversion circuit is operational and the second power conversion circuit is standby, the grid supplies power to the load via the bypass switch, the grid enables energy exchange of active and reactive power with the battery via the first power conversion circuit.
6. The hybrid power system of UPS and PCS of claim 1 wherein the hybrid power system of UPS and PCS operates in a third mode of operation, the bypass switch is open, the first power conversion circuit and the second power conversion circuit operate, the grid exchanges active and reactive power with the battery via the first power conversion circuit, and power provided by the battery is converted and provided to the load via the second power conversion circuit.
7. The hybrid power system of UPS and PCS of claim 1 wherein the hybrid power system of UPS and PCS operates in a fourth mode of operation, the bypass switch is open, the first power conversion circuit is standby and the second power conversion circuit is operational, and power provided by the battery is converted and provided to the load via the second power conversion circuit.
8. The hybrid power system of a UPS and a PCS of claim 1 operating in a fifth mode of operation, the bypass switch is conductive, the first power conversion circuit and the second power conversion circuit operate, and power provided by the battery is provided to the load via a second path formed by the first power conversion circuit and the bypass switch and via the second power conversion circuit.
9. The hybrid power system of UPS and PCS according to claim 1, wherein the hybrid power system of UPS and PCS further comprises a first controller and a second controller, the first controller controlling operation of the first power conversion circuit and the second controller controlling operation of the second power conversion circuit.
10. The UPS and PCS hybrid power supply system of claim 9 wherein the energy storage module further comprises a battery management system for controlling the battery to perform charge or discharge operations.
11. The UPS and PCS hybrid power supply system of claim 10 wherein the first controller, the second controller and the battery management system are in communication with and coordinated by an energy management system to correspondingly control the first power conversion circuit, the second power conversion circuit and the battery, respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110647084.8A CN115473248A (en) | 2021-06-10 | 2021-06-10 | UPS and PCS hybrid power supply system |
| TW110129191A TWI797707B (en) | 2021-06-10 | 2021-08-06 | Hybrid power supply system of ups and pcs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110647084.8A CN115473248A (en) | 2021-06-10 | 2021-06-10 | UPS and PCS hybrid power supply system |
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| CN115473248A true CN115473248A (en) | 2022-12-13 |
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| US7061139B2 (en) * | 2001-02-13 | 2006-06-13 | Utc Fuel Cells, Llc | System for providing assured power to a critical load |
| JP6028499B2 (en) * | 2012-04-06 | 2016-11-16 | ソニー株式会社 | Power supply |
| TWI692181B (en) * | 2018-10-16 | 2020-04-21 | 財團法人工業技術研究院 | Electric power regulating system and method thereof |
| CN111628519A (en) * | 2019-02-28 | 2020-09-04 | 深圳中瀚云科技股份有限公司 | Power supply control method of power supply system, power supply system and storage medium |
| CN112448464A (en) * | 2019-08-30 | 2021-03-05 | 施耐德电气It公司 | Uninterruptible power supply system bypass switch control |
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| TW202249384A (en) | 2022-12-16 |
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