CN219304493U - PCS converter input side direct current voltage self-adaptation module and fuel cell power generation device - Google Patents
PCS converter input side direct current voltage self-adaptation module and fuel cell power generation device Download PDFInfo
- Publication number
- CN219304493U CN219304493U CN202223106841.XU CN202223106841U CN219304493U CN 219304493 U CN219304493 U CN 219304493U CN 202223106841 U CN202223106841 U CN 202223106841U CN 219304493 U CN219304493 U CN 219304493U
- Authority
- CN
- China
- Prior art keywords
- fuel cell
- voltage
- input side
- pcs converter
- pcs
- 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
Images
Abstract
The utility model provides a direct-current voltage self-adaptive module of an input side of a PCS converter and a fuel cell power generation device, wherein the module comprises: a first circuit for connecting the fuel cell; a second circuit for connecting the PCS converter input side; the voltage regulating circuit is provided with a load and a control switch; and a voltage sensor for detecting an input voltage of the PCS converter input side; when the PCS converter is connected with the fuel cell through the module, the input side of the PCS converter is connected with the voltage regulating circuit in parallel. The utility model has the beneficial effects that: when the power generation device is started initially, when the output voltage is higher than the starting voltage of the PCS converter and the PCS converter cannot be started, the PCS converter is started automatically by switching in a load in the voltage regulating circuit and increasing and decreasing the output current and the output voltage of the fuel cell along with the increase of the load power until the output voltage of the fuel cell meets the starting voltage of the PCS converter, so that the power generation device of the fuel cell is started.
Description
Technical Field
The utility model relates to the technical field of fuel cell power generation equipment, in particular to a direct-current voltage self-adaptive module at the input side of a PCS converter and a fuel cell power generation device.
Background
Compared with the traditional energy, the hydrogen energy storage technology can realize gas, liquid and solid tri-state storage, has the advantages of less consumption in the storage process, high energy density and various production modes, can complete peak regulation and frequency modulation by matching with a power plant through hydrogen production and power generation, and has incomparable advantages in the aspects of installed capacity, power generation duration and the like.
The grid-connected side installed power of the energy storage power station is always above MW level, at present, the direct current voltage at the input side of a PCS converter (energy storage converter) which is conventionally connected to a power grid is generally set to be 500-900VDC, an input voltage overvoltage protection mechanism is provided, when the PCS converter is beyond the voltage range, the PCS converter cannot be started, and the alternating current voltage at the output side is 320-400VAC. However, in the hydrogen fuel cell power station, the single-stack power of the electric pile is hundreds of kW, so that the purpose of improving the power of the single-stack system is achieved in a series connection mode after a plurality of electric pile stacks are adopted to maximally realize the single-stack power of the fuel cell system and reduce the number of auxiliary machines and the complexity of the whole system.
When the PCS converter works, the selected rated working voltage is close to the upper limit in order to ensure the conversion efficiency to the greatest extent, for example, the rated working voltage of the standard PCS converter is 800V; the open circuit voltage of a single fuel cell is typically 1V and the nominal operating voltage is typically about 0.6V when the fuel cell is in operation. When the voltage of the rated point of the stacks connected in series is 800V, the voltage is calculated as 0.6V on a single sheet, and more than 1300 fuel cells are arranged in series. The open circuit voltage at the start-up of the fuel cell will exceed 1300V far beyond the limited voltage range of 500-900VDC on the input side of the PCS converter, which results in an inability of the PCS converter to start up normally.
At present, some power generation devices are also provided with a direct current converter (DCDC) device between the fuel cell and the PCS converter for converting the open-circuit voltage of the fuel cell to meet the limitation requirement of the input voltage of the input side of the PCS converter, but the dc converter has high cost and large volume and occupies extra space, meanwhile, the circuit control logic of the DCDC converter is complex, the control difficulty of the system is increased, and in addition, the DCDC converter has conversion efficiency loss, so that the overall power of the fuel cell power generation device is reduced.
Disclosure of Invention
In view of this, in order to solve the problem that the open circuit voltage exceeds the limited voltage range of the input side of the PCS converter when the fuel cell is started, the embodiment of the utility model provides a direct current voltage adaptive module of the input side of the PCS converter and a fuel cell power generation device.
An embodiment of the present utility model provides a direct current voltage adaptive module for an input side of a PCS converter, which is suitable for a fuel cell power generation device, and includes:
a first circuit for connecting the fuel cell;
a second circuit for connecting the PCS converter input side;
the voltage regulating circuit is provided with a load and a control switch;
and a voltage sensor to detect the PCS converter input side input voltage;
when the PCS converter is connected with the fuel cell through the module, the input side of the PCS converter is connected with the voltage regulating circuit in parallel.
Further, the first circuit, the second circuit, the voltage sensor, and the voltage regulation circuit are packaged integrally.
Further, a connection circuit is also included for connecting the battery pack to the fuel cell.
Further, the load includes a resistor; alternatively, the load comprises a plurality of resistors connected in parallel.
Further, the control switch is a relay, a contactor or a circuit breaker.
Moreover, an embodiment of the present utility model provides a fuel cell power plant including: the device comprises a fuel cell, a PCS converter, a controller and the direct-current voltage self-adaptation module at the input side of the PCS converter; the PCS converter input side and the voltage regulating circuit are connected in parallel and then connected with the fuel cell; the controller is respectively connected with the voltage sensor and the control switch.
Further, the number of the stacks of the fuel cell may be plural, and all the stacks are arranged in series.
Further, the preset voltage is the maximum input voltage of the PCS converter.
Further, the open circuit voltage of the fuel cell is greater than the preset voltage.
Further, the fuel cell system further comprises a storage battery pack and a charging controller which are connected in series, wherein the storage battery pack is connected with the input side of the PCS converter to supply power, and the charging controller is connected with the fuel cell through the connecting circuit.
Further, the controller is respectively connected with the fuel cell, the PCS converter, the storage battery pack, the charging controller and the direct-current voltage self-adaption module at the input side of the PCS converter.
Further, the output side of the PCS converter is connected with an isolation transformer to realize power supply.
The technical scheme provided by the embodiment of the utility model has the beneficial effects that:
1. according to the direct-current voltage self-adaptive module at the input side of the PCS converter and the fuel cell power generation device, when the power generation device is started initially and the output voltage is higher than the limit voltage which can be started by the PCS converter and PCS cannot be started, the output current of the fuel cell is increased and the output voltage is reduced along with the increase of the load power through the connection of the load in the voltage regulating circuit, so that the output voltage of the fuel cell is quickly reduced to be within the limit voltage range of the input side of the PCS converter, the PCS converter can be started smoothly, and the starting of the fuel cell power generation device is realized.
2. According to the direct-current voltage self-adaptive module and the fuel cell power generation device for the PCS converter, the switching-on of the voltage regulating circuit is controlled at the moment of starting the fuel cell to reduce the voltage of the input side of the PCS converter, and the switching-off of the voltage regulating circuit can be controlled in time after the input voltage of the input side of the PCS converter is reduced, so that the whole working process can be automatically completed, and the reaction is rapid.
3. Compared with the direct-current converter for voltage conversion, the direct-current voltage self-adaptive module and the fuel cell power generation device at the input side of the PCS converter are simple in structure, low in cost and high in working reliability, and the power generation power of the fuel cell power generation device is not reduced.
4. According to the direct-current voltage self-adaptive module and the fuel cell power generation device at the input side of the PCS converter, when external power is supplied, independent power can be supplied through the fuel cell according to actual conditions, independent power can be supplied through the storage battery pack, and the power can be supplied through the fuel cell and the storage battery pack together, so that the power supply requirements under different application scenes are met. The fuel cell can also charge the storage battery pack according to actual conditions, so that the practicability, adaptability and stability of the fuel cell are greatly improved, and the market demands and application scenes of comprehensive utilization of more and more energy sources are met.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a DC-DC adaptive module for an input side of a PCS converter according to the present utility model;
FIG. 2 is a schematic diagram of one embodiment of the fuel cell power plant of the present utility model when connected to a grid;
in the figure: the direct-current voltage self-adaptive module of the input side of the 100-PCS converter, a 1-fuel cell, a 2-PCS converter, a 3-voltage regulating circuit, a 4-control switch, a 5-load, a 6-resistor, a 7-isolation transformer, an 8-storage battery pack and a 9-charging controller.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be further described with reference to the accompanying drawings. The following presents a preferred one of a number of possible embodiments of the utility model in order to provide a basic understanding of the utility model, but is not intended to identify key or critical elements of the utility model or to delineate the scope of the utility model.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
In the description of the present utility model, it should be noted that, in the present utility model, circuits, electronic components, and modules are all related to the prior art, and those skilled in the art may completely implement the present utility model, and it is needless to say that the protection of the present utility model does not relate to improvement of internal structures.
It is further noted that unless specifically stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, an embodiment of the present utility model provides a dc voltage adaptive module 100 on an input side of a PCS converter of a fuel cell power plant, disposed between an input side of a PCS converter 2 and a fuel cell 1, the module mainly includes a first circuit for connecting the fuel cell 1, a second circuit for connecting the input side of the PCS converter 2, a voltage sensor and a voltage regulating circuit 3; the voltage regulating circuit 3 is connected to a first circuit and a second circuit respectively, wherein the first circuit is used as an input end of the direct current voltage adaptive module 100 at the input side of the PCS converter, and the second circuit is used as an output end of the direct current voltage adaptive module 100 at the input side of the PCS converter.
When the direct current voltage adaptive module 100 at the input side of the PCS converter is connected with the fuel cell 1 through the first circuit and the input side of the PCS converter 2 through the second circuit, the voltage regulating circuit 3 and the input side of the PCS converter 2 are in a parallel connection state. The voltage regulating circuit 3 is provided with a load 5 and a control switch 4 for controlling the on-off of the voltage regulating circuit 3.
The PCS converter 2 receives a dc voltage at an input side and outputs an ac voltage at an output side, and converts ac/dc. As can be seen from the characteristics of the PCS converter 2, the PCS converter 2 can normally operate when the input voltage at the input side of the PCS converter 2 is within a limited voltage range, and the PCS converter 2 cannot start operating when the input voltage at the input side of the PCS converter 2 exceeds the maximum input voltage within the limited voltage range. The defined voltage range at the input side of the PCS converter 2 is determined by its own characteristics, i.e. the maximum input voltage at the input side of the PCS converter 2 is determined. In this embodiment, the rated operating voltage of the input side of the PCS converter 2 is 800V, the limiting voltage of the input side of the PCS converter 2 is 500-900V, and the corresponding maximum input voltage is 900V.
In order to secure the maximum conversion efficiency of the PCS converter 2, the rated operating voltage of the fuel cell 1 is determined based on the rated operating voltage of the input side of the PCS converter 2. The fuel cell 1 is connected to the input side of the PCS converter 2, and the output voltage of the fuel cell 1 is the input voltage of the input side of the PCS converter 2. In this embodiment, the open circuit voltage at the start-up of the fuel cell 1 is 1300V, and the rated operating voltage is 800V.
The voltage sensor is connected with the input side of the PCS converter 2, and can detect the input voltage of the input side of the PCS converter 2 in real time.
In other embodiments, the voltage regulating circuit 3 is connected in parallel with the input side of the PCS converter 2, the voltage regulating circuit 3 is provided with a load 5 and a control switch 4 which are connected in series, the load 5, the control switch 4 and the fuel cell 1 form a loop, the control switch 4 controls the opening and closing of the loop, and the control switch 4 can be a circuit switch such as a relay, a contactor, a circuit breaker and the like.
The load 5 is a general electric appliance, and the resistance value is as small as possible. Preferably, the load 5 in this embodiment is a resistor 6 or a plurality of resistors 6 connected in parallel. When the load 5 is a plurality of resistors 6, the plurality of resistors 6 are connected in parallel to greatly reduce the resistance of the load 5, thereby increasing the current of the voltage regulating circuit 3 and rapidly reducing the voltage across the voltage regulating circuit 3. In other embodiments, the plurality of resistors 6 may be arranged in series-parallel.
A method implemented based on the present application: the control switch 4 is closed when the input voltage is higher than a preset voltage and opened when the input voltage is not higher than the preset voltage. In practical application, the control switch 4 can be controlled to be automatically turned on or turned off by the control module. Specifically, the control module is respectively connected to the voltage sensor and the control switch 4, so as to control the on/off of the control switch 4 according to the input voltage of the PCS converter 2: when the input voltage is higher than a preset voltage, the control switch 4 is controlled to be closed; the control switch 4 is controlled to be turned off when the input voltage is not higher than a preset voltage. The preset voltage is determined from a defined voltage range at the input side of the PCS converter 2, which is typically not exceeded. As in the present embodiment, the preset voltage selects the maximum input voltage 900V of the PCS converter 2.
Specifically, when the fuel cell 1 is started, the open-circuit voltage of the fuel cell 1 is 1300V, and at this time, the open-circuit voltage of the fuel cell 1 is greater than the maximum input voltage, and the PCS converter 2 cannot start to operate; the voltage sensor detects that the input voltage of the input side of the PCS converter 2 is 1300V and exceeds the preset voltage, the control module controls the control switch 4 to be closed, the voltage regulating circuit 3 is conducted, and the input voltage of the fuel cell 1 to the input side of the PCS converter 2 is reduced due to the fact that the power of the fuel cell 1 is basically constant and the current on the voltage regulating circuit 3 is increased and the voltage is reduced; when the voltage sensor detects that the input voltage of the input side of the PCS converter 2 is reduced to 900V, the input voltage is within a limited voltage range of the input side of the PCS converter 2, the control module controls the control switch 4 to be turned off, the voltage regulating circuit 3 is turned off, the fuel cell 1 outputs rated voltage, the input voltage of the input side of the PCS converter 2 is about 800V of rated working voltage, and the PCS converter 2 starts to work normally.
The control module may be a single controller or chip, may be a single control submodule of the present fuel cell power plant, or may share a controller of other components such as the PCS converter 2. When the control module is not disposed on the dc voltage adaptive module 100 at the input side of the PCS converter, in order to facilitate the control module to obtain the input voltage and control the on/off of the control switch 4, the dc voltage adaptive module 100 at the input side of the PCS converter is provided with a communication module for connecting the control module, and the connection between the control module and the communication module may be electrical connection or wireless connection.
Preferably, the direct current voltage adaptive module 100 at the input side of the PCS converter is packaged as a whole, and only the first circuit and the second circuit are exposed to be connected with the input sides of the fuel cell 1 and the PCS converter 2 respectively. In practical applications, the first circuit and the second circuit are exposed to the outside and may be interfaces or wires. The sample PCS converter input side direct current voltage self-adapting module 100 can work by being directly arranged between the fuel cell 1 and the PCS converter 2 through plugging. Like this, the modularization equipment of each device is realized in the production of being convenient for, carrying, use and dismouting to simplify the dismouting flow and the loaded down with trivial details degree of this fuel cell power generation facility greatly, improve its production efficiency, also avoid this PCS converter input side DC voltage self-adaptation module 100's device to reveal in the external environment simultaneously, avoid impurity to intervene and interfere, thereby ensure the life and the stable security of this disclosure.
In another embodiment of the present utility model, based on but not limited to the above embodiment, the present PCS converter input side dc voltage adaptive module 100 further includes a connection circuit for connecting the battery pack 8 with the fuel cell 1. In practical applications, the connection circuit may be connected to the fuel cell 1 through the first circuit. The connection circuit may also be connected to the fuel cell 1 through a third circuit, which, like the first circuit, may be an interface or a connection exposed outside the dc voltage adaptive module 100 on the input side of the PCS converter. In practical applications, the first circuit (and/or the third circuit), the second circuit, the voltage sensor and the voltage regulating circuit 3 (and/or the control module) are all disposed on the circuit board for packaging, and the load 5 is preferably coated with a heat-conducting glue to accelerate heat dissipation.
Referring to fig. 2, an embodiment of the present utility model further provides a fuel cell power generation device, including: a fuel cell 1, a PCS converter 2, a controller, and a PCS converter input side dc voltage adaptive module 100 as described in any one of the above; the input side of the PCS converter 2 is connected with the voltage regulating circuit 3 in parallel and then connected with the fuel cell 1; the controller is respectively connected with the voltage sensor and the control switch 4.
One implementation method based on the power generation device comprises the following steps: when the input voltage is higher than the preset voltage, the controller controls the switch 4 to be closed; the controller controls the switch 4 to be turned off when the input voltage is not higher than the preset voltage. Specifically, the direct current voltage adaptive module 100 at the input side of the PCS converter is connected to the fuel cell 1 through a first circuit, and the direct current voltage adaptive module 100 at the input side of the PCS converter is connected to the input side of the PCS converter 2 through a second circuit, so as to realize connection between the PCS converter 2 and the fuel cell 1. In practical applications, the connection of the controller to the voltage sensor and the control switch 4 may be a wireless connection and/or an electrical connection for signal reception and execution.
The number of stacks of the fuel cell 1 may be set to be plural, and the stacks are connected in series in order, and the total output voltage of each stack (i.e., the fuel cell 1) after the series connection is the input voltage of the input side of the PCS converter 2.
As in the present embodiment, the open circuit voltage of each fuel cell in each stack is 1V and the rated operating voltage is 0.6V, and then the number of fuel cells is 1300 in order to satisfy the actual input voltage at the input side of the PCS converter 2 as the rated operating voltage. At this time, the open circuit voltage at the start-up of the fuel cell 1 was 1300V, and the rated operating voltage was 800V.
When the number of stacks is set to be plural, the number of stacks is determined according to the output voltage of the fuel cell 1 and the rated operating voltage of the input side of the PCS converter 2 at the time of actual application, without being limited by the present embodiment.
In some other embodiments, the number of stacks of the fuel cell 1 is set to one, the fuel cell 1 is connected to the input side of the PCS converter 2 through the dc voltage adaptive module 100 on the input side of the PCS converter, and the open circuit voltage of the fuel cell 1 is greater than the maximum input voltage of the PCS converter 2.
In another embodiment of the present utility model, as shown in fig. 2, based on but not limited to the above embodiment, the present fuel cell power generation device further includes: a battery pack 8 and a charge controller 9 connected in series, the battery pack 8 being connected to the input side of the PCS converter 2 to supply power, the charge controller 9 being connected to the fuel cell 1 through a connection circuit. The fuel cell 1 can charge the battery pack 8, and when the fuel cell 1 stops working due to faults and the like, the battery pack 8 can input voltage to the input side of the PCS converter 2, so that the fuel cell power generation device supplies power through the battery pack 8. Specifically, the controller is connected to the fuel cell 1, the PCS converter 2, the battery pack 8, the charge controller 9, and the PCS converter input side dc voltage adaptive module 100, respectively.
Based on the embodiment, the following working modes can be realized:
the first working mode is that when the fuel cell 1, the direct-current voltage self-adaptive module 100 at the input side of the PCS converter and the input side of the PCS converter 2 are in an electric conduction state; the storage battery pack 8 is in an electric disconnection state with the input side of the PCS converter 2; the fuel cell 1 is selectively in an electrically disconnected state or an electrically connected state with the charge controller 9 and the battery pack 8 via a connection circuit.
In this operation mode, the connection between the storage battery set 8 and the input side of the PCS converter 2 is disconnected, the connection between the fuel cell 1 and the charge controller 9 is disconnected, the fuel cell 1 is started, when the power-on and starting of the fuel cell power generation device are started, the fuel cell 1 outputs a dc open circuit voltage higher than the starting voltage range of the PCS converter 2 when being started, the dc open circuit voltage is loaded on the PCS converter 2, the PCS converter 2 cannot be started due to the voltage protection mechanism of the dc input side of the PCS converter 2, at this time, after the voltage output by the fuel cell 1 is adjusted to the set voltage (the starting voltage range of the PCS converter 2) by the dc voltage adaptive module 100 of the input side of the PCS converter, the PCS converter 2 is started, and the power-on and the power-generation device starts, and the generated dc power is inverted into ac power by the PCS converter 2 and starts to supply through the isolation transformer 7. In this process, when the battery pack 8 needs to be charged, the electricity generated by the fuel cell 1 flows to the PCS converter 2 except for a part, and the battery pack 8 can be charged by the charging controller 9, and after the battery pack 8 is fully charged, the connection between the fuel cell 1 and the charging controller 9 is disconnected, so that the battery pack 8 is not charged any more. It is to be noted that when the fuel cell 1 charges the battery pack 8, the voltage sensor detects the voltage to be supplied to the input side of the PCS converter 2 for the fuel cell 1, and no longer the entire output voltage of the fuel cell 1. Of course, when the fuel cell 1 supplies power only to the input side of the PCS converter 2, the voltage sensor detects the entire output voltage to be the fuel cell 1.
And a second working mode: when the battery pack 8 is in an electrically conductive state with the input side of the PCS converter 2, the fuel cell 1 is in an electrically disconnected state with the input side of the PCS converter 2, and the fuel cell 1 is in an electrically disconnected state with the charge controller 9. In this operation mode, the connection between the fuel cell 1 and the input side of the PCS converter 2 and the charge controller 9 of the fuel cell 1 is disconnected, the battery pack 8 is inverted to ac power at the input side of the PCS converter 2, and power supply is started through the isolation transformer 7.
And a third working mode: when the storage battery pack 8 and the input side of the PCS converter 2 are in an electrically conductive state, the fuel cell 1 and the input side of the PCS converter 2 are in an electrically conductive state; the fuel cell 1 is in an electrically disconnected state from the charge controller 9. In this operation mode, when the fuel cell 1 and the battery pack 8 cannot individually meet the power demand due to the larger power demand, the dual power mode may be adopted: after the fuel cell 1 starts to supply power, the storage battery 8 is connected to the input side of the PCS converter 2 through a switch, the storage battery and the PCS converter 2 are combined and inverted into alternating current, and the isolation transformer 7 starts to supply power, so that the generated power is improved.
In this embodiment, the switch for connecting the fuel cell 1 with the components (such as the charge controller 9 and the PCS converter 2) through the dc voltage adaptive module 100 at the input side of the PCS converter is preferably disposed in the dc voltage adaptive module 100 at the input side of the PCS converter. Of course, it is also possible to realize on-off by providing a switch between the dc voltage adaptive module 100 at the input side of the PCS converter and the component, and the utility model shall fall within the scope of protection. The fuel cell power generation device can realize grid-connected power supply or external equipment power supply through the isolation transformer 7.
The fuel cell 1 referred to herein may be one or more of a proton membrane fuel cell, a solid fuel cell, a hydrogen fuel cell that burns hydrogen gas, or a fuel cell such as a methanol fuel cell.
In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can be varied in many ways depending upon the application and placement, and that the use of such orientation terms should not be taken to limit the scope of protection of the present application.
The embodiments described above and features of the embodiments herein may be combined with each other without conflict.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. A direct current voltage adaptive module for a PCS converter input side adapted for use in a fuel cell power plant, the module comprising:
a first circuit for connecting the fuel cell;
a second circuit for connecting the PCS converter input side;
the voltage regulating circuit is provided with a load and a control switch;
and a voltage sensor to detect the PCS converter input side input voltage;
when the PCS converter is connected with the fuel cell through the module, the input side of the PCS converter is connected with the voltage regulating circuit in parallel.
2. The PCS converter input side dc voltage adaptation module of claim 1 wherein: the first circuit, the second circuit, the voltage sensor and the voltage regulating circuit are packaged integrally.
3. The PCS converter input side dc voltage adaptation module of claim 1 wherein: and a connection circuit for connecting the storage battery pack with the fuel cell.
4. The PCS converter input side dc voltage adaptation module of claim 1 wherein: the load comprises a resistor; alternatively, the load comprises a plurality of resistors connected in parallel.
5. The PCS converter input side dc voltage adaptation module in accordance with any one of claims 1-4, wherein: the control switch is a relay, a contactor or a circuit breaker.
6. A fuel cell power plant, characterized by comprising: a fuel cell, a PCS converter, a controller, and a PCS converter input side dc voltage adaptive module as claimed in any one of claims 1 to 5; the PCS converter input side and the voltage regulating circuit are connected in parallel and then connected with the fuel cell; the controller is respectively connected with the voltage sensor and the control switch.
7. The fuel cell power plant according to claim 6, wherein: the fuel cell has a plurality of electric piles, and all the electric piles are arranged in series.
8. The fuel cell power plant according to claim 6, further comprising: and the storage battery pack is connected with the input side of the PCS converter to supply power, and the charging controller is connected with the fuel cell through a connecting circuit.
9. The fuel cell power plant according to claim 8, wherein: the controller is respectively connected with the fuel cell, the PCS converter, the storage battery pack, the charging controller and the direct-current voltage self-adaption module at the input side of the PCS converter.
10. The fuel cell power plant according to any one of claims 6 to 9, characterized in that: and the output side of the PCS converter is connected with an isolation transformer to realize power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223106841.XU CN219304493U (en) | 2022-11-22 | 2022-11-22 | PCS converter input side direct current voltage self-adaptation module and fuel cell power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223106841.XU CN219304493U (en) | 2022-11-22 | 2022-11-22 | PCS converter input side direct current voltage self-adaptation module and fuel cell power generation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219304493U true CN219304493U (en) | 2023-07-04 |
Family
ID=86987879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223106841.XU Active CN219304493U (en) | 2022-11-22 | 2022-11-22 | PCS converter input side direct current voltage self-adaptation module and fuel cell power generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219304493U (en) |
-
2022
- 2022-11-22 CN CN202223106841.XU patent/CN219304493U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8364287B2 (en) | Apparatus, system, and method to manage the generation and use of hybrid electric power | |
| EP3001530B1 (en) | Photovoltaic system and method for controlling the same | |
| CN102088190A (en) | Grid-connected power storage system and method for controlling grid-connected power storage system | |
| Artal et al. | Autonomous mobile robot with hybrid PEM fuel-cell and ultracapacitors energy system. Dedalo 2.0 | |
| Hawke et al. | A modular fuel cell with hybrid energy storage | |
| US20070269692A1 (en) | Fuel Cell Apparatus and a Charging/Discharging Management System and Method Using Such Apparatus | |
| US8890365B2 (en) | Fuel cell device and method for feeding electrical current to electrical network | |
| CN219304493U (en) | PCS converter input side direct current voltage self-adaptation module and fuel cell power generation device | |
| WO2012175784A1 (en) | An offset control arrangement and method for controlling voltage values in a fuel cell system | |
| CN209088562U (en) | A kind of charge and discharge current limliting battery pack parallel control device of minimal switches | |
| CN116316796A (en) | PCS converter input side direct current voltage self-adaptation module and fuel cell power generation device | |
| CN103595255B (en) | A kind of for the hardware system of DC/DC conversion in proton exchange membrane fuel cell standby power | |
| CN114937985A (en) | Power supply system | |
| CN202134923U (en) | Deep charging and discharging type battery energy storage paralleling device | |
| Auld et al. | Load-following strategies for evolution of solid oxide fuel cells into model citizens of the grid | |
| CN207764330U (en) | It is a kind of that the fully loaded test system of frequency converter is realized using SVG | |
| CN217545593U (en) | Power supply system | |
| RU2807514C1 (en) | Control method for pulsed power buck converter | |
| CN111381173A (en) | Fuel cell testing system capable of efficiently utilizing electric energy and control method | |
| CN111404184A (en) | Fuel cell test and electric vehicle charging coupling system and control method | |
| Bidoggia et al. | Design of a fuel cell based backup system for telecoms applications | |
| CN220342044U (en) | Energy storage control management system and energy storage container | |
| Oates et al. | Power conditioning for solid oxide fuel cells | |
| Wei et al. | Research on hydrogen-light ship power system | |
| JP2009291023A (en) | Hybrid power supply and power unit using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |