WO2024125535A1 - Output power control method and system for hydrogen fuel cell system, and device and medium - Google Patents
Output power control method and system for hydrogen fuel cell system, and device and medium Download PDFInfo
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- WO2024125535A1 WO2024125535A1 PCT/CN2023/138318 CN2023138318W WO2024125535A1 WO 2024125535 A1 WO2024125535 A1 WO 2024125535A1 CN 2023138318 W CN2023138318 W CN 2023138318W WO 2024125535 A1 WO2024125535 A1 WO 2024125535A1
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- fuel cell
- output power
- hydrogen fuel
- cell system
- air compressor
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- 239000000446 fuel Substances 0.000 title claims abstract description 158
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 239000001257 hydrogen Substances 0.000 title claims abstract description 118
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000013459 approach Methods 0.000 claims abstract description 5
- 230000006870 function Effects 0.000 claims description 30
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- 230000000694 effects Effects 0.000 abstract description 3
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- 239000007789 gas Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 10
- 230000004044 response Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
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- 102100026388 L-amino-acid oxidase Human genes 0.000 description 2
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 2
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 2
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04111—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04858—Electric variables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to the field of hydrogen fuel cell technology, and in particular to an output power control method, system, device and medium for a hydrogen fuel cell system.
- the hydrogen fuel cell system includes at least three subsystems: the cooling circuit, the cathode circuit, and the power circuit.
- the multiple subsystems coordinate and restrict each other.
- the set values are changed in turn during the output process, and they wait for them to reach and stabilize at the set values.
- the cathode circuit controls the back pressure valve and the air compressor at the same time according to the instructions of the fuel cell engine control system, so that the flow and pressure of the cathode circuit reach the specified values. Due to the mutual coupling of flow, pressure and gas consumption, the performance of the battery stack fluctuates greatly during the variable load process.
- it adopts control strategies such as constant current, constant pressure, and constant power. It can only input signals according to the system power demand, calculate and call the corresponding operating parameters such as pressure and flow, and the operating parameters correspond to the system power demand one by one, which is not suitable for actual application needs in a wide range of application scenarios.
- the present invention provides an output power control method, system, device and storage medium for a hydrogen fuel cell system, which are used to solve the problem in the prior art that the control strategy of the hydrogen fuel cell system is fixed, the performance of the fuel cell stack fluctuates greatly, and it is not suitable for actual application needs in a wide range of application scenarios, and realize multi-factor power control of the hydrogen fuel cell system.
- the present invention provides an output power control method for a hydrogen fuel cell system, comprising:
- the air compressor control signal and the target output power conform to a preset output function.
- control method for controlling output power of a hydrogen fuel cell system provided by the present invention
- the law also includes:
- the back pressure valve and/or the exhaust valve are adjusted according to the changing state of the hydrogen fuel cell system so that the system state meets the preset state requirements.
- control method further includes:
- the electrical circuit of the hydrogen fuel cell system is adjusted according to the deviation information so that the first type of variables and the second type of variables tend to a preset characteristic curve.
- the one type of variable is the output current or output current density of the hydrogen fuel cell system, or a variable calculated therefrom;
- the second type of variables are the output voltage, output power or internal resistance compensated output voltage of the hydrogen fuel cell system, or variables calculated therefrom.
- the output function is a monotonic function.
- the air compressor control signal is the air compressor torque, speed, current, power or PWM duty cycle, or a variable calculated therefrom.
- the present invention further provides an output power control system of a hydrogen fuel cell system, comprising:
- a target acquisition unit used to acquire a target output power of the hydrogen fuel cell system
- An output control unit is used to confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell tends to the target output power; wherein the air compressor control signal and the target output power conform to a preset output function.
- the present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, an output power control system of any of the above-mentioned hydrogen fuel cell systems is implemented.
- the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the output power of any of the above-mentioned hydrogen fuel cell systems is realized. Control System.
- the output power control method, system, device and medium of the hydrogen fuel cell system provided by the present invention after confirming the target output power, use a preset output function to regulate the air compressor control signal, and can solve the actual power output demand according to the output function in different application scenarios. It has a wide range of applications and good control implementation effect.
- FIG1 is a schematic diagram of a flow chart of a method for controlling output power of a hydrogen fuel cell system provided by the present invention
- FIG2 is a second flow chart of the output power control method of the hydrogen fuel cell system provided by the present invention.
- FIG3 is a schematic diagram of a condition curve and a characteristic curve provided by the present invention.
- FIG4 is a schematic structural diagram of a hydrogen fuel cell system provided by the present invention.
- FIG. 7 is a schematic diagram of the structure of an electronic device provided by the present invention.
- Step 1 Obtain the target output power of the hydrogen fuel cell system
- Step 2 confirming the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power.
- the air compressor control signal and the target output power meet a preset output function.
- the present invention comprises the following steps:
- S201 obtaining the target output power
- S202 confirming the air compressor control signal according to the target output power
- S203 adjusting the cathode circuit according to the air compressor control signal, and then adjusting the cathode gas flow
- S204 as the cathode gas flow changes, the output power of the hydrogen fuel cell tends to the target output power.
- the hydrogen fuel cell system of the present invention includes a cooling circuit, a cathode circuit and a power circuit.
- a subsystem after obtaining the target output power in the above step 1, the cathode circuit obtains the corresponding air compressor control signal according to the target output power and the preset output function between the target output power, and adjusts the air compressor based on the air compressor control signal, thereby changing the gas flow of the fuel cell stack, so that the output power of the fuel cell changes and tends to the target output power.
- the present invention tends to include but is not limited to reducing the difference between the output power of the fuel cell and the target output power.
- the present invention obtains an air compressor control signal based on a preset output function, which can make the output power of the hydrogen fuel cell system the same as the target output power, thereby achieving effective control of the output power of the hydrogen fuel cell system.
- the present invention uses a preset output function to regulate the air compressor control signal when the target output power is confirmed, and can solve the actual power output demand according to the output function in different application scenarios. It has a wide range of applications and good control implementation effect.
- control method further comprises:
- the back pressure valve and/or the exhaust valve are adjusted according to the changing state of the hydrogen fuel cell system so that the system state meets the preset state requirements.
- the system state of the hydrogen fuel cell system changes, that is, after the air compressor is adjusted, the gas flow rate input to the stack changes.
- the back pressure valve and/or the exhaust valve are adjusted, and the air pressure is adjusted so that the system state meets the preset state requirements.
- the current step obtains the target output power, and obtains the corresponding air compressor control signal based on the preset output function to adjust the air compressor to increase the air flow; after the system detects that the air flow has increased, it adjusts the back pressure valve opening to stabilize the air pressure in the system. It is undisputed that the present invention can also perform follow-up adjustment on the exhaust valve alone, or adjust the back pressure valve and the exhaust valve at the same time to stabilize the air pressure in the system.
- the state requirement is the requirement for the normal and stable operation of the hydrogen fuel cell system, such as meeting the humidity change requirement of the fuel cell stack.
- Those skilled in the art are capable of adjusting the follow-up adjustment strategy of the back pressure valve and the exhaust valve according to the characteristics of the hydrogen fuel cell system, so that the follow-up adjustment of the back pressure valve and/or the exhaust valve meets the requirements. Preset status requirements.
- the present invention adjusts the back pressure valve and/or the exhaust valve according to the changing state of the hydrogen fuel cell system, thereby reducing the mutual coupling influence of flow and pressure in the control and adjustment process, and performing follow-up control and adjustment of the hydrogen fuel cell with a sequence, thereby realizing multi-factor power control of the hydrogen fuel cell system, with flexible control strategy and small fluctuation in stack performance, and being suitable for the control of hydrogen fuel cell systems with different application requirements.
- the hydrogen fuel cell system of the present invention has three subsystems, as shown in FIG4 .
- the cooling circuit has a long loading time due to the large inertia of the water pump and the medium.
- the cathode circuit subsystem has a long loading time due to the large inertia of the air compressor and the large medium flow rate.
- the present invention can save the time required to wait for the cathode gas supply conditions to reach the new set value and stabilize, so that a higher load-changing response speed can be achieved, the gas consumption and supply changes during the load-changing process can be reduced, and the service life of the fuel cell stack can be extended.
- control method further comprises:
- the deviation information of the first and second type variables output by the hydrogen fuel cell and a preset characteristic curve is obtained; the electrical circuit of the hydrogen fuel cell system is adjusted according to the deviation information so that the first and second type variables tend to the preset characteristic curve.
- the characteristic curve is a curve directly or indirectly related to the first-class variable and the second-class variable.
- the horizontal and vertical coordinates of the characteristic curve are the first-class variable and the second-class variable, respectively, to limit the first-class variable and the second-class variable.
- the deviation information of the point on the characteristic curve closest to the first-class variable and the second-class variable can be obtained, including the deviation distance and the deviation direction.
- the control variable of the output control module can be adjusted according to the deviation, and the distance between the first-class variable and the second-class variable and the characteristic curve can be made close to or equal to 0 by using the adjustment means of open-loop control or closed-loop control.
- each first-class variable can correspond to a second-class variable, and this correspondence forms a series of first-class variable-second-class variable fixed condition curves corresponding to fixed conditions, hereinafter referred to as condition curves.
- Changes in the state of the hydrogen fuel cell will cause the first-class variables and the second-class variables to change on the condition curves; when the first-class variables and the control variables remain unchanged, changes in the output control circuit of the hydrogen fuel cell will cause changes in the second-class variables; when the control variables remain unchanged, changes in the state parameters of the hydrogen fuel cell will cause changes in the first-class variables and the second-class variables.
- the following embodiments are based on the first-class variables,
- the second type of variable meets the condition curve for example.
- the present invention is not limited to the case where the first type of variable and the second type of variable meet the condition curve.
- those skilled in the art can also adjust the control variable according to the information of the hydrogen fuel cell so that the first type of variable and the second type of variable meet the preset characteristic curve.
- the preset first-class variable-second-class variable characteristic curve of the present invention does not overlap with any of the above-mentioned conditional curves, but intersects with a series of conditional curves, and has only a limited number of intersections with each intersecting conditional curve; during system operation, when the actual values of the first-class variables and the second-class variables deviate from the characteristic curve, the control variables are adjusted according to the deviation direction and deviation size to make the first-class variables and the second-class variables output by the hydrogen fuel cell return to the characteristic curve.
- the power circuit subsystem of the power subcircuit has the fastest response time due to the high switching frequency and fast duty cycle adjustment.
- the power circuit subsystem automatically adjusts the power circuit in real time in a manner that maintains the predetermined characteristic curve according to the actual output performance of the stack during the change of the cathode gas supply conditions, saving the time required to wait for the cathode gas supply conditions to reach the new set value and stabilize, and saving the time consumed by the limited load change rate of the power circuit, so that a higher load change response speed can be achieved.
- the catalyst potential fluctuation can be reduced, the gas consumption and supply changes during the load change process can be reduced, and the service life of the stack can be extended.
- the present invention controls the control variables according to the deviation information between the first and second type of variables and the characteristic curve, controls the entire hydrogen fuel cell system to always maintain the output characteristics corresponding to the preset characteristic curve, achieves millisecond-level response time through the output control circuit, and improves the stability and service life of the hydrogen fuel cell.
- negative feedback control method or positive feedback control method can be used to control the control variables.
- the control purpose is to make Class I and Class II variables tend to the characteristic curve.
- the following hydrogen fuel cell parameters are taken as an example: the first type of variable is the stack output current, the second type of variable is the stack output voltage, and the first type of variable and the second type of variable are adjusted by changing the DC transformer output switch duty cycle; through automatic feedback control of the DC transformer output duty cycle, the hydrogen fuel cell output current and output voltage are maintained on the preset characteristic curve.
- control process is as follows:
- the fuel cell output DC transformer increases the output current by adjusting the duty cycle of the internal DC transformer circuit, thereby reducing the output voltage and approaching the characteristic curve.
- This implementation ensures that the current and voltage values entering the input side of the transformer are on the preset volt-ampere characteristic curve of the fuel cell stack, so that the entire fuel cell system always maintains the preset output characteristics. It not only achieves millisecond-level response time through duty cycle control on the transformer side, but also improves the stability and service life of the fuel cell stack operation.
- This implementation uses FDC as an important part of the stack control. Since the circuit response speed in FDC is much higher than the components of the hydrogen circuit and the air circuit, the fast response characteristics of FDC can be used to lock the actual output of the stack on the characteristic curve during the dynamic changes of the hydrogen circuit and the air circuit components, thereby improving the operating stability and service life of the stack.
- the duty cycle of the fuel cell output DC transformer is adjusted by calculating the difference between the output current and output voltage of the fuel cell stack and the target volt-ampere characteristic curve of the fuel cell stack;
- the difference value is the voltage difference under the same current, the current difference under the same voltage, or the voltage difference, The value obtained by calculating the current difference.
- the duty cycle is adjusted to increase the output current of the fuel cell stack
- one type of variable is the output current of the hydrogen fuel cell system or the output current density of the hydrogen fuel cell, or a variable calculated therefrom;
- the second type of variables are the output voltage, output power or internal resistance compensated output voltage of the hydrogen fuel cell system, or variables calculated therefrom.
- the response speeds of the three subsystems of the hydrogen fuel cell are reasonably distributed to achieve follow-up control of the gas circuit and coordinated characteristic curve control of the power circuit.
- the power regulation process of the fuel cell system is optimized based on the response speeds at different levels to achieve multi-factor power control of the hydrogen fuel cell system.
- the control strategy is flexible, and the performance fluctuation of the stack is small. It is suitable for the control of hydrogen fuel cell systems with different application requirements.
- the output function is a monotonic function.
- the relationship between the target output power and the air compressor control signal is monotonically increasing or decreasing, so the output function is a monotonic function, and the output functions of the two can be calibrated according to the specific parameters of the hydrogen fuel system.
- the functional relationship between the target output power S1 and the air compressor control signal S2 is monotonically increasing or monotonically decreasing.
- the functional relationship between the target output power and the air compressor control signal as a positive proportional function as an example, after obtaining the target output power, the corresponding air compressor control signal can be matched according to the output function, and then the hydrogen fuel cell system can be controlled according to the air compressor control signal.
- the air compressor control signal is the air compressor torque, speed, current, power or PWM duty cycle, or a variable calculated therefrom. Effective regulation can be carried out to adjust the speed, power or flow of the air compressor, so that the cathode circuit changes and the output power can be adjusted.
- the output power control system of a hydrogen fuel cell system provided by the present invention is described below.
- the output power control system of a hydrogen fuel cell system described below and the output power control method of a hydrogen fuel cell system described above can be referred to each other.
- An output power control system of a hydrogen fuel cell system includes: a target acquisition unit 601 for acquiring a target output power of the hydrogen fuel cell system;
- the output control unit 602 is used to confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell tends to the target output power; wherein the air compressor control signal and the target output power conform to a preset output function.
- FIG7 is a schematic diagram of an electronic device provided in an embodiment of the present application.
- the electronic device 700 includes: a processor 710, a memory 720, and a communication interface 730. These components are interconnected and communicate with each other through a communication bus 740 and/or other forms of connection mechanisms (not shown) to perform an output power control method for a hydrogen fuel cell system, including: Step 1: Obtain the target output power of the hydrogen fuel cell system; Step 2: Confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power. Wherein, the air compressor control signal and the target output power conform to a preset output function.
- the memory 720 includes one or more (only one is shown in the figure), which may be, but not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc.
- RAM random access memory
- ROM read-only memory
- PROM programmable read-only memory
- EPROM erasable programmable read-only memory
- EEPROM electrically erasable read-only memory
- the processor 710 includes one or more (only one is shown in the figure), which can be an integrated circuit chip with signal processing capabilities.
- the above-mentioned processor 710 can be a general-purpose processor, including a central processing unit (CPU), a microcontroller unit (MCU), and a processor. It may be a computer programmable logic device (MCU), a network processor (NP) or other conventional processors; it may also be a special-purpose processor, including a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.
- DSP digital signal processor
- ASIC application-specific integrated circuit
- FPGA field programmable gate array
- the communication interface 730 includes one or more (only one is shown in the figure), which can be used to communicate directly or indirectly with other devices to exchange data.
- the communication interface 730 can be an Ethernet interface; it can be a mobile communication network interface, such as an interface of a 3G, 4G, or 5G network; or it can be other types of interfaces with data transceiving functions.
- One or more computer program instructions may be stored in the memory 720 , and the processor 710 may read and execute these computer program instructions to implement the output power control method of the hydrogen fuel cell system provided in the embodiment of the present application and other desired functions.
- the structure shown in FIG. 7 is for illustration only, and the electronic device 700 may also include more or fewer components than those shown in FIG. 7 , or have a configuration different from that shown in FIG. 7 .
- Each component shown in FIG. 7 may be implemented using hardware, software, or a combination thereof.
- the electronic device 700 may be a single server (or other device with computing processing capabilities), a combination of multiple servers, a cluster of a large number of servers, etc., and may be both a physical device and a virtual device.
- the present invention also provides a computer program product, the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can execute the output power control method of the hydrogen fuel cell system provided by the above methods, including: step 1: obtaining the target output power of the hydrogen fuel cell system; step 2: confirming the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal, so that the output power of the hydrogen fuel cell tends to the target output power.
- the air compressor control signal and the target output power meet the preset output function.
- the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the output power control method of the hydrogen fuel cell system provided by the above-mentioned methods, including: step one: obtaining the target output power of the hydrogen fuel cell system; step two: confirming the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal, so that the output power of the hydrogen fuel cell
- the air compressor control signal and the target output power are in accordance with a preset output function.
- the computer-readable storage medium can be implemented as the memory 720 in the electronic device 700 in FIG. 7 .
- the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.
- each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware.
- the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM/RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.
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Abstract
The present invention provides an output power control method and system for a hydrogen fuel cell system, and a device and a medium. The method comprises: acquiring a target output power of a hydrogen fuel cell system; and determining an air compressor control signal for a cathode loop of a fuel cell according to the target output power, and adjusting the cathode loop on the basis of the air compressor control signal, such that the output power of the hydrogen fuel cell approaches the target output power, wherein the air compressor control signal and the target output power meet a preset output function. The method further comprises: acquiring deviation information of a first-type variable and of a second-type variable, which are output by the hydrogen fuel cell, from a preset characteristic curve; and an electrical loop of the hydrogen fuel cell system performing adjustment according to the deviation information, such that the variables tend to be on the preset characteristic curve. In the present invention, insofar as the target output power is confirmed, the preset output function is used for regulating the air compressor control signal, such that the actual power output requirement can be met according to the output function in different application scenes; and the application range is wide, and the control implementation effect is good.
Description
本发明涉及氢燃料电池技术领域,尤其涉及一种氢燃料电池系统的输出功率控制方法、系统、设备及介质。The present invention relates to the field of hydrogen fuel cell technology, and in particular to an output power control method, system, device and medium for a hydrogen fuel cell system.
氢燃料电池系统至少包括冷却回路、阴极回路和电力回路三个子系统,多个子系统相互协调而又相互制约,输出过程中轮流改变设定值,并等待其达到和稳定在设定值。其中阴极回路根据燃料电池发动机控制系统指令,同时控制背压阀和空压机,使阴极回路的流量和压力达到指定值,由于流量和压力以及气体消耗量相互耦合影响,变载过程电堆性能波动大。并且,其采用恒流、恒压、恒功率等控制策略,只能根据系统功率需求输入信号,计算调用相应的压力、流量等工况参数,工况参数与系统功率需求一一对应,不适合广泛应用场景下的实际应用需求。The hydrogen fuel cell system includes at least three subsystems: the cooling circuit, the cathode circuit, and the power circuit. The multiple subsystems coordinate and restrict each other. The set values are changed in turn during the output process, and they wait for them to reach and stabilize at the set values. The cathode circuit controls the back pressure valve and the air compressor at the same time according to the instructions of the fuel cell engine control system, so that the flow and pressure of the cathode circuit reach the specified values. Due to the mutual coupling of flow, pressure and gas consumption, the performance of the battery stack fluctuates greatly during the variable load process. In addition, it adopts control strategies such as constant current, constant pressure, and constant power. It can only input signals according to the system power demand, calculate and call the corresponding operating parameters such as pressure and flow, and the operating parameters correspond to the system power demand one by one, which is not suitable for actual application needs in a wide range of application scenarios.
发明内容Summary of the invention
本发明提供一种氢燃料电池系统的输出功率控制方法、系统、设备及存储介质,用以解决现有技术中氢燃料电池系统控制是控制策略固定,电堆性能波动大,不适合广泛应用场景下的实际应用需求的问题,实现氢燃料电池系统的多因素功率控制。The present invention provides an output power control method, system, device and storage medium for a hydrogen fuel cell system, which are used to solve the problem in the prior art that the control strategy of the hydrogen fuel cell system is fixed, the performance of the fuel cell stack fluctuates greatly, and it is not suitable for actual application needs in a wide range of application scenarios, and realize multi-factor power control of the hydrogen fuel cell system.
第一方面,本发明提供一种氢燃料电池系统的输出功率控制方法,包括:In a first aspect, the present invention provides an output power control method for a hydrogen fuel cell system, comprising:
获取氢燃料电池系统的目标输出功率;Obtaining a target output power of a hydrogen fuel cell system;
根据所述目标输出功率确认燃料电池的阴极回路的空压机控制信号,并基于所述空压机控制信号调节阴极回路,使氢燃料电池的输出功率趋于目标输出功率;confirming an air compressor control signal of a cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power;
其中,所述空压机控制信号与目标输出功率间符合预设的输出函数。Wherein, the air compressor control signal and the target output power conform to a preset output function.
根据本发明提供的一种氢燃料电池系统的输出功率控制方法,所述控制方
法还包括:According to a method for controlling output power of a hydrogen fuel cell system provided by the present invention, the control method The law also includes:
根据所述氢燃料电池系统的变化状态对背压阀和/或排气阀进行调节,使系统状态满足预设的状态需求。The back pressure valve and/or the exhaust valve are adjusted according to the changing state of the hydrogen fuel cell system so that the system state meets the preset state requirements.
根据本发明提供的一种氢燃料电池系统的输出功率控制方法,所述控制方法还包括:According to an output power control method of a hydrogen fuel cell system provided by the present invention, the control method further includes:
获取所述氢燃料电池输出的一类变量及二类变量与预设的特性曲线的偏离信息;Obtaining deviation information between the first-class variable and the second-class variable output by the hydrogen fuel cell and a preset characteristic curve;
所述氢燃料电池系统的电气回路根据所述偏离信息进行调节,使一类变量、二类变量趋于预设的特性曲线上。The electrical circuit of the hydrogen fuel cell system is adjusted according to the deviation information so that the first type of variables and the second type of variables tend to a preset characteristic curve.
根据本发明提供的一种氢燃料电池系统的输出功率控制方法,所述一类变量为氢燃料电池系统的输出电流或输出电流密度,或由此计算得到的变量;According to an output power control method of a hydrogen fuel cell system provided by the present invention, the one type of variable is the output current or output current density of the hydrogen fuel cell system, or a variable calculated therefrom;
所述二类变量为氢燃料电池系统的输出电压、输出功率或内阻补偿输出电压,或由此计算得到的变量。The second type of variables are the output voltage, output power or internal resistance compensated output voltage of the hydrogen fuel cell system, or variables calculated therefrom.
根据本发明提供的一种氢燃料电池系统的输出功率控制方法,所述的输出函数为单调函数。According to an output power control method of a hydrogen fuel cell system provided by the present invention, the output function is a monotonic function.
根据本发明提供的一种氢燃料电池系统的输出功率控制方法,所述空压机控制信号为空压机扭矩、转速、电流、功率或PWM占空比,或由此计算得到的变量。According to a method for controlling the output power of a hydrogen fuel cell system provided by the present invention, the air compressor control signal is the air compressor torque, speed, current, power or PWM duty cycle, or a variable calculated therefrom.
第二方面,本发明还提供一种氢燃料电池系统的输出功率控制系统,包括:In a second aspect, the present invention further provides an output power control system of a hydrogen fuel cell system, comprising:
目标获取单元,用于获取氢燃料电池系统的目标输出功率;A target acquisition unit, used to acquire a target output power of the hydrogen fuel cell system;
输出控制单元,用于根据所述目标输出功率确认燃料电池的阴极回路的空压机控制信号,并基于所述空压机控制信号调节阴极回路,使氢燃料电池的输出功率趋于目标输出功率;其中,所述空压机控制信号与目标输出功率间符合预设的输出函数。An output control unit is used to confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell tends to the target output power; wherein the air compressor control signal and the target output power conform to a preset output function.
本发明还提供一种电子设备,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序,所述处理器执行所述程序时实现如上述任一种氢燃料电池系统的输出功率控制系统。The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, an output power control system of any of the above-mentioned hydrogen fuel cell systems is implemented.
本发明还提供一种非暂态计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行时实现如上述任一种氢燃料电池系统的输出功率
控制系统。The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the output power of any of the above-mentioned hydrogen fuel cell systems is realized. Control System.
本发明提供的氢燃料电池系统的输出功率控制方法、系统、设备及介质,在确认目标输出功率的情况下,利用预设的输出函数对空压机控制信号进行调控,能够在不同应用场景下根据输出函数解决实际的功率输出需求,可应用范围广,控制实施效果好,此外,能基于所述空压机控制信号调节阴极回路后,再根据氢燃料电池系统的变化状态对背压阀和/或排气阀进行调节,降低控制调节过程中流量和压力的相互耦合影响,对氢燃料电池进行有先后时序的随动控制调节,实现氢燃料电池系统的多因素功率控制,控制策略灵活,电堆性能波动小,适用于不同应用需求的氢燃料电池系统的控制。The output power control method, system, device and medium of the hydrogen fuel cell system provided by the present invention, after confirming the target output power, use a preset output function to regulate the air compressor control signal, and can solve the actual power output demand according to the output function in different application scenarios. It has a wide range of applications and good control implementation effect. In addition, after adjusting the cathode circuit based on the air compressor control signal, the back pressure valve and/or the exhaust valve can be adjusted according to the changing state of the hydrogen fuel cell system, thereby reducing the mutual coupling effect of flow and pressure during the control and adjustment process, and performing follow-up control adjustment on the hydrogen fuel cell with a sequence, thereby realizing multi-factor power control of the hydrogen fuel cell system, with flexible control strategy and small fluctuation in stack performance, and suitable for the control of hydrogen fuel cell systems with different application requirements.
本申请的其他特征和优点将在随后的说明书阐述,并且,部分地从说明书中变得显而易见,或者通过实施本申请实施例了解。本申请的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所特别指出的结构来实现和获得。Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the embodiments of the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.
为了更清楚地说明本发明或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
图1是本发明提供的氢燃料电池系统的输出功率控制方法的流程示意图之一;FIG1 is a schematic diagram of a flow chart of a method for controlling output power of a hydrogen fuel cell system provided by the present invention;
图2是本发明提供的氢燃料电池系统的输出功率控制方法的流程示意图之二;FIG2 is a second flow chart of the output power control method of the hydrogen fuel cell system provided by the present invention;
图3是本发明提供的条件曲线和特性曲线的示意图;FIG3 is a schematic diagram of a condition curve and a characteristic curve provided by the present invention;
图4是本发明提供的氢燃料电池系统的结构示意图;FIG4 is a schematic structural diagram of a hydrogen fuel cell system provided by the present invention;
图5是本发明提供的输出函数示意图;FIG5 is a schematic diagram of an output function provided by the present invention;
图6是本发明提供的氢燃料电池系统的输出功率控制系统结构示意图;FIG6 is a schematic diagram of the structure of an output power control system of a hydrogen fuel cell system provided by the present invention;
图7是本发明提供的电子设备的结构示意。FIG. 7 is a schematic diagram of the structure of an electronic device provided by the present invention.
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案,因此只作为示例,而不能以此来限制本申请的保护范围。The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.
除非另有定义,本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同;本文中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本申请;本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形,意图在于覆盖不排他的包含。Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.
在本申请实施例的描述中,技术术语“第一”“第二”等仅用于区别不同对象,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中,“多个”的含义是两个以上,除非另有明确具体的限定。In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.
在本文中提及“实施例”意味着,结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例,也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是,本文所描述的实施例可以与其它实施例相结合。Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
下面结合图1描述本发明的一种氢燃料电池系统的输出功率控制方法,包括:The following describes an output power control method of a hydrogen fuel cell system of the present invention in conjunction with FIG1, comprising:
步骤一:获取氢燃料电池系统的目标输出功率;Step 1: Obtain the target output power of the hydrogen fuel cell system;
步骤二:根据所述目标输出功率确认燃料电池的阴极回路的空压机控制信号,并基于所述空压机控制信号调节阴极回路,使氢燃料电池的输出功率趋于目标输出功率。其中,所述空压机控制信号与目标输出功率间符合预设的输出函数。Step 2: confirming the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power. The air compressor control signal and the target output power meet a preset output function.
进一步地,如图2所示,本发明包括以下步骤:Further, as shown in FIG2 , the present invention comprises the following steps:
S201,获取目标输出功率;S202,根据目标输出功率确认空压机控制信号;S203,根据空压机控制信号调节阴极回路,进而调节阴极气体流量;S204,随着阴极气体流量的改变,氢燃料电池的输出功率趋于目标输出功率。S201, obtaining the target output power; S202, confirming the air compressor control signal according to the target output power; S203, adjusting the cathode circuit according to the air compressor control signal, and then adjusting the cathode gas flow; S204, as the cathode gas flow changes, the output power of the hydrogen fuel cell tends to the target output power.
具体的,本发明的氢燃料电池系统包括冷却回路、阴极回路和电力回路三
个子系统,在上述步骤一获取目标输出功率后,阴极回路根据目标输出功率与目标输出功率间预设的输出函数,得到对应的空压机控制信号,并基于空压机控制信号调节空压机,进而改变电堆的气流量,使得燃料电池的输出功率改变,并趋于目标输出功率。Specifically, the hydrogen fuel cell system of the present invention includes a cooling circuit, a cathode circuit and a power circuit. A subsystem, after obtaining the target output power in the above step 1, the cathode circuit obtains the corresponding air compressor control signal according to the target output power and the preset output function between the target output power, and adjusts the air compressor based on the air compressor control signal, thereby changing the gas flow of the fuel cell stack, so that the output power of the fuel cell changes and tends to the target output power.
需要说明的是,本发明中趋于包括但不限于使燃料电池的输出功率与目标输出功率间的差值变小。It should be noted that the present invention tends to include but is not limited to reducing the difference between the output power of the fuel cell and the target output power.
作为优选方案,本发明基于预设的输出函数得到的空压机控制信号,能够使氢燃料电池系统的输出功率与目标输出功率相同,实现对氢燃料电池系统的输出功率的有效控制。As a preferred solution, the present invention obtains an air compressor control signal based on a preset output function, which can make the output power of the hydrogen fuel cell system the same as the target output power, thereby achieving effective control of the output power of the hydrogen fuel cell system.
本发明在确认目标输出功率的情况下,利用预设的输出函数对空压机控制信号进行调控,能够在不同应用场景下根据输出函数解决实际的功率输出需求,可应用范围广,控制实施效果好。The present invention uses a preset output function to regulate the air compressor control signal when the target output power is confirmed, and can solve the actual power output demand according to the output function in different application scenarios. It has a wide range of applications and good control implementation effect.
在一个优选实施例中,控制方法还包括:In a preferred embodiment, the control method further comprises:
根据氢燃料电池系统的变化状态对背压阀和/或排气阀进行调节,使系统状态满足预设的状态需求。The back pressure valve and/or the exhaust valve are adjusted according to the changing state of the hydrogen fuel cell system so that the system state meets the preset state requirements.
具体的,当上述步骤一获取氢燃料电池系统的目标输出功率、步骤二中基于所述空压机控制信号调节阴极回路后,氢燃料电池系统的系统状态发生变化,即空压机调整后,输入电堆的气流量发生了变化。该实施例中通过跟随上述气流量的变化,对背压阀和/或排气阀进行随动调节,对空气压力进行调整,使系统状态满足预设的状态需求。Specifically, when the target output power of the hydrogen fuel cell system is obtained in step 1 and the cathode circuit is adjusted based on the air compressor control signal in step 2, the system state of the hydrogen fuel cell system changes, that is, after the air compressor is adjusted, the gas flow rate input to the stack changes. In this embodiment, by following the change of the above-mentioned gas flow rate, the back pressure valve and/or the exhaust valve are adjusted, and the air pressure is adjusted so that the system state meets the preset state requirements.
进一步地,例如,当前步序的目标输出功率大于上一步序的实际的输出功率情况下,当前步序获取目标输出功率,并基于预设的输出函数得到对应的空压机控制信号调节空压机,使气流量变大;系统检测到气流量变大后,对背压阀开度进行调节,使系统中的空气压力稳定。毫无异议的是,本发明也可以单独对排气阀进行随动调节,或同事对背压阀、排气阀进行调节,使系统中的空气压力稳定。Furthermore, for example, when the target output power of the current step is greater than the actual output power of the previous step, the current step obtains the target output power, and obtains the corresponding air compressor control signal based on the preset output function to adjust the air compressor to increase the air flow; after the system detects that the air flow has increased, it adjusts the back pressure valve opening to stabilize the air pressure in the system. It is undisputed that the present invention can also perform follow-up adjustment on the exhaust valve alone, or adjust the back pressure valve and the exhaust valve at the same time to stabilize the air pressure in the system.
具体的,所述状态需求为使氢燃料电池系统正常稳定运行的需求,如满足电堆的湿度变化需求,本领域技术人员有能力根据氢燃料电池系统的特点对背压阀、排气阀的随动调节策略进行调整,使背压阀和/或排气阀的随动调节满足
预设的状态需求。Specifically, the state requirement is the requirement for the normal and stable operation of the hydrogen fuel cell system, such as meeting the humidity change requirement of the fuel cell stack. Those skilled in the art are capable of adjusting the follow-up adjustment strategy of the back pressure valve and the exhaust valve according to the characteristics of the hydrogen fuel cell system, so that the follow-up adjustment of the back pressure valve and/or the exhaust valve meets the requirements. Preset status requirements.
本发明在基于所述空压机控制信号调节阴极回路后,再根据氢燃料电池系统的变化状态对背压阀和/或排气阀进行调节,降低控制调节过程中流量和压力的相互耦合影响,对氢燃料电池进行有先后时序的随动控制调节,实现氢燃料电池系统的多因素功率控制,控制策略灵活,电堆性能波动小,适用于不同应用需求的氢燃料电池系统的控制。After adjusting the cathode circuit based on the air compressor control signal, the present invention adjusts the back pressure valve and/or the exhaust valve according to the changing state of the hydrogen fuel cell system, thereby reducing the mutual coupling influence of flow and pressure in the control and adjustment process, and performing follow-up control and adjustment of the hydrogen fuel cell with a sequence, thereby realizing multi-factor power control of the hydrogen fuel cell system, with flexible control strategy and small fluctuation in stack performance, and being suitable for the control of hydrogen fuel cell systems with different application requirements.
在本发明的氢燃料电池系统的具有三个子系统,如图4所示,冷却回路由于水泵惯性、介质惯性大,升载时间长;阴极回路子系统由于空压机惯性大和介质流量大等原因,其升载时间较长;本发明中能够节省等待阴极供气条件达到新的设定值并稳定所需要的时间,因此可以达到更高的变载响应速度,减少变载过程的气体消耗和供应的变化,延长电堆使用寿命。The hydrogen fuel cell system of the present invention has three subsystems, as shown in FIG4 . The cooling circuit has a long loading time due to the large inertia of the water pump and the medium. The cathode circuit subsystem has a long loading time due to the large inertia of the air compressor and the large medium flow rate. The present invention can save the time required to wait for the cathode gas supply conditions to reach the new set value and stabilize, so that a higher load-changing response speed can be achieved, the gas consumption and supply changes during the load-changing process can be reduced, and the service life of the fuel cell stack can be extended.
在另一个优选实施例中,控制方法还包括:In another preferred embodiment, the control method further comprises:
获取所述氢燃料电池输出的一类变量及二类变量与预设的特性曲线的偏离信息;所述氢燃料电池系统的电气回路根据所述偏离信息进行调节,使一类变量、二类变量趋于预设的特性曲线上。The deviation information of the first and second type variables output by the hydrogen fuel cell and a preset characteristic curve is obtained; the electrical circuit of the hydrogen fuel cell system is adjusted according to the deviation information so that the first and second type variables tend to the preset characteristic curve.
本实施例中,特性曲线为与一类变量、二类变量直接或间接相关的曲线,示例性地,特性曲线的横纵坐标分别为一类变量、二类变量,对一类变量、二类变量进行限定。In this embodiment, the characteristic curve is a curve directly or indirectly related to the first-class variable and the second-class variable. Exemplarily, the horizontal and vertical coordinates of the characteristic curve are the first-class variable and the second-class variable, respectively, to limit the first-class variable and the second-class variable.
具体的,为了实现一类变量、二类变量趋于预设的特性曲线上,可以获取特性曲线上与一类变量、二类变量最近的点的偏离信息,包括偏离距离和偏离方向。可根据偏离对输出控制模块的控制变量进行调节,利用开环控制或闭环控制的调节手段,使一类变量与二类变量与特性曲线的距离趋近于0或等于0。Specifically, in order to make the first-class variable and the second-class variable tend to the preset characteristic curve, the deviation information of the point on the characteristic curve closest to the first-class variable and the second-class variable can be obtained, including the deviation distance and the deviation direction. The control variable of the output control module can be adjusted according to the deviation, and the distance between the first-class variable and the second-class variable and the characteristic curve can be made close to or equal to 0 by using the adjustment means of open-loop control or closed-loop control.
示例性地,为便于说明,如图3所示,在氢燃料电池状态参数不变的情况下,在一类变量的合理范围内,每个一类变量均可对应一个二类变量,该对应关系形成了一系列对应于固定条件的一类变量-二类变量固定条件曲线,以下简称条件曲线,氢燃料电池状态的变化会导致一类变量和二类变量在条件曲线上变化;在一类变量和控制变量不变的情况下,氢燃料电池的输出控制电路变化会导致二类变量的变化;在控制变量不变的情况下,氢燃料电池的状态参数变化会导致一类变量和二类变量的变化。为便于说明,下述实施例均以一类变量、
二类变量符合条件曲线进行示例。但是本发明并不限于一类变量、二类变量符合条件曲线这一情况。当一类变量、二类变量不符合条件曲线时,本领域技术人员也能够根据氢燃料电池的信息对控制变量进行调节,使一类变量、二类变量符合预设的特性曲线。Exemplarily, for ease of explanation, as shown in FIG3, when the state parameters of the hydrogen fuel cell remain unchanged, within the reasonable range of the first-class variables, each first-class variable can correspond to a second-class variable, and this correspondence forms a series of first-class variable-second-class variable fixed condition curves corresponding to fixed conditions, hereinafter referred to as condition curves. Changes in the state of the hydrogen fuel cell will cause the first-class variables and the second-class variables to change on the condition curves; when the first-class variables and the control variables remain unchanged, changes in the output control circuit of the hydrogen fuel cell will cause changes in the second-class variables; when the control variables remain unchanged, changes in the state parameters of the hydrogen fuel cell will cause changes in the first-class variables and the second-class variables. For ease of explanation, the following embodiments are based on the first-class variables, The second type of variable meets the condition curve for example. However, the present invention is not limited to the case where the first type of variable and the second type of variable meet the condition curve. When the first type of variable and the second type of variable do not meet the condition curve, those skilled in the art can also adjust the control variable according to the information of the hydrogen fuel cell so that the first type of variable and the second type of variable meet the preset characteristic curve.
具体地,本发明预设的一类变量-二类变量特性曲线以下简称特性曲线,不与任一条上述条件曲线重合,而与一系列条件曲线相交,且与每条相交的条件曲线只有有限个交点;在系统运行过程中,当一类变量和二类变量的实际值偏离了特性曲线,根据偏离方向与偏离大小,调整控制变量,使氢燃料电池输出的一类变量和二类变量回到特性曲线上。Specifically, the preset first-class variable-second-class variable characteristic curve of the present invention, hereinafter referred to as the characteristic curve, does not overlap with any of the above-mentioned conditional curves, but intersects with a series of conditional curves, and has only a limited number of intersections with each intersecting conditional curve; during system operation, when the actual values of the first-class variables and the second-class variables deviate from the characteristic curve, the control variables are adjusted according to the deviation direction and deviation size to make the first-class variables and the second-class variables output by the hydrogen fuel cell return to the characteristic curve.
如图3和图4所示,电力子回路的电力回路子系统由于开关频率高、占空比调整快等原因,其响应时间最快,电力回路子系统自动根据在阴极供气条件变化过程中的电堆实际输出性能,以保持在预定特性曲线上的方式实现电力回路的实时自动调节,节省了等待阴极供气条件达到新的设定值并稳定所需要的时间,节省了电力回路变载速率受限所消耗的时间,因此可以达到更高的变载响应速度。同时由于电堆输出电压电流保持在预定特性曲线上,可以减少催化剂电位波动,减少变载过程的气体消耗和供应的变化,延长电堆使用寿命。As shown in Figures 3 and 4, the power circuit subsystem of the power subcircuit has the fastest response time due to the high switching frequency and fast duty cycle adjustment. The power circuit subsystem automatically adjusts the power circuit in real time in a manner that maintains the predetermined characteristic curve according to the actual output performance of the stack during the change of the cathode gas supply conditions, saving the time required to wait for the cathode gas supply conditions to reach the new set value and stabilize, and saving the time consumed by the limited load change rate of the power circuit, so that a higher load change response speed can be achieved. At the same time, since the output voltage and current of the stack are maintained on the predetermined characteristic curve, the catalyst potential fluctuation can be reduced, the gas consumption and supply changes during the load change process can be reduced, and the service life of the stack can be extended.
本发明根据所述一类变量、二类变量与特性曲线的偏离信息对控制变量进行控制,控制整个氢燃料电池系统始终保持预设的特性曲线对应的输出特性,通过输出控制电路实现毫秒级响应时间,提升了氢燃料电池的稳定性和使用寿命。The present invention controls the control variables according to the deviation information between the first and second type of variables and the characteristic curve, controls the entire hydrogen fuel cell system to always maintain the output characteristics corresponding to the preset characteristic curve, achieves millisecond-level response time through the output control circuit, and improves the stability and service life of the hydrogen fuel cell.
作为优选方案,为了实现对一类变量、二类变量的调节,可采用负反馈控制方法或正反馈控制方法对控制变量进行控制,控制目的在于使一类变量、二类变量趋于特性曲线上。As a preferred solution, in order to achieve the regulation of Class I and Class II variables, negative feedback control method or positive feedback control method can be used to control the control variables. The control purpose is to make Class I and Class II variables tend to the characteristic curve.
本实施例中,以氢燃料电池参数如下为例:一类变量为电堆输出电流,二类变量为电堆输出电压,通过改变直流变压器输出开关占空比调节一类变量和二类变量;通过直流变压器输出占空比的自动反馈控制,实现氢燃料电池输出电流和输出电压保持在预设的特性曲线上。In this embodiment, the following hydrogen fuel cell parameters are taken as an example: the first type of variable is the stack output current, the second type of variable is the stack output voltage, and the first type of variable and the second type of variable are adjusted by changing the DC transformer output switch duty cycle; through automatic feedback control of the DC transformer output duty cycle, the hydrogen fuel cell output current and output voltage are maintained on the preset characteristic curve.
以采用负反馈控制方法,并以工作状态为基准状态为例,控制过程具体为:Taking the negative feedback control method as an example and taking the working state as the reference state, the control process is as follows:
实时监测氢燃料电池的电堆的输出电流和输出电压,并与预设的特性曲线
对比,在氢燃料电池输出直流变压器FDC的输入侧对氢燃料电池的输出电流和输出电压进行调整,该调整过程包括:Real-time monitoring of the output current and output voltage of the hydrogen fuel cell stack, and comparing them with the preset characteristic curve In contrast, the output current and output voltage of the hydrogen fuel cell are adjusted on the input side of the hydrogen fuel cell output DC transformer FDC, and the adjustment process includes:
若输出电流和输出电压位于电堆目标伏安特性曲线的下方,则燃料电池输出直流变压器通过调整内部直流变压电路的占空比的方式,减小输出电流,从而提高输出电压,接近特性曲线;If the output current and output voltage are below the target volt-ampere characteristic curve of the stack, the fuel cell output DC transformer reduces the output current by adjusting the duty cycle of the internal DC transformer circuit, thereby increasing the output voltage and approaching the characteristic curve;
若输出电流和输出电压位于电堆目标伏安特性曲线的上方,燃料电池输出直流变压器通过调整内部直流变压电路的占空比的方式,增大输出电流,从而降低输出电压,接近特性曲线。If the output current and output voltage are above the target volt-ampere characteristic curve of the stack, the fuel cell output DC transformer increases the output current by adjusting the duty cycle of the internal DC transformer circuit, thereby reducing the output voltage and approaching the characteristic curve.
该实施方式中,在氢燃料电池输出直流变压器的输入侧,对氢燃料电池的输出电流和输出电压进行调整,在氢燃料电池工况参数保持或变化的情况下,均通过调整Buck-Boost电路电子器件开关占空比的方式,使得输入侧的电流和电压值始终位于电堆目标伏安特性曲线上,进而按照氢燃料电池的预定输出性能进行电能输出。In this embodiment, the output current and output voltage of the hydrogen fuel cell are adjusted on the input side of the hydrogen fuel cell output DC transformer. When the operating parameters of the hydrogen fuel cell are maintained or changed, the switching duty cycle of the Buck-Boost circuit electronic devices is adjusted so that the current and voltage values on the input side are always on the target volt-ampere characteristic curve of the fuel cell stack, thereby outputting electrical energy according to the predetermined output performance of the hydrogen fuel cell.
该实施方式保证了进入变压器输入侧的电流和电压值位于电堆预设伏安特性曲线上,使得整个燃料电池系统始终保持预设的输出特性,既通过变压器侧的占空比控制实现毫秒级响应时间,又提升了电堆运行的稳定性和使用寿命。This implementation ensures that the current and voltage values entering the input side of the transformer are on the preset volt-ampere characteristic curve of the fuel cell stack, so that the entire fuel cell system always maintains the preset output characteristics. It not only achieves millisecond-level response time through duty cycle control on the transformer side, but also improves the stability and service life of the fuel cell stack operation.
具体地,该实施方式将FDC控制的目标参数设置为电堆输出的电流电压在伏安特性曲线图上与目标伏安特性曲线的距离;若电堆实际输出电流电压在目标曲线之下,则通过FDC减小电堆输出电能,以使电堆实际输出电流减小,电压提高,从下方接近目标曲线;若电堆实际输出电流电压在目标曲线之上,则通过FDC增大电堆输出电能,以使电堆实际输出电流增大,电压降低,从上方接近目标曲线。Specifically, this embodiment sets the target parameter of FDC control as the distance between the current and voltage output by the fuel cell stack and the target volt-ampere characteristic curve on the volt-ampere characteristic curve diagram; if the actual output current and voltage of the fuel cell stack are below the target curve, the fuel cell stack output electric energy is reduced through FDC to reduce the actual output current of the fuel cell stack and increase the voltage, approaching the target curve from below; if the actual output current and voltage of the fuel cell stack are above the target curve, the fuel cell stack output electric energy is increased through FDC to increase the actual output current of the fuel cell stack and reduce the voltage, approaching the target curve from above.
该实施方式将FDC作为电堆控制的一个重要部分,由于FDC中的电路响应速度远高于氢气回路和空气回路的组件,因此可以在氢气回路和空气回路组件动态变化的过程中,利用FDC的快速响应特性来实现电堆实际输出锁定在的特性曲线上,提升电堆运行稳定性和使用寿命。This implementation uses FDC as an important part of the stack control. Since the circuit response speed in FDC is much higher than the components of the hydrogen circuit and the air circuit, the fast response characteristics of FDC can be used to lock the actual output of the stack on the characteristic curve during the dynamic changes of the hydrogen circuit and the air circuit components, thereby improving the operating stability and service life of the stack.
当处于运行状态时,通过计算燃料电堆的输出电流和输出电压与电堆目标伏安特性曲线的差异值,调整燃料电池输出直流变压器的占空比;When in operation, the duty cycle of the fuel cell output DC transformer is adjusted by calculating the difference between the output current and output voltage of the fuel cell stack and the target volt-ampere characteristic curve of the fuel cell stack;
差异值为同一电流下的电压差、同一电压下的电流差,或采用所述电压差、
电流差计算得到的数值。The difference value is the voltage difference under the same current, the current difference under the same voltage, or the voltage difference, The value obtained by calculating the current difference.
若采用电压差作为差异值,当处于运行状态时,燃料电池输出直流变压器的占空比调整过程具体为:If the voltage difference is used as the difference value, when in operation, the duty cycle adjustment process of the fuel cell output DC transformer is as follows:
计算燃料电堆的输出电流和输出电压与电堆目标伏安特性曲线中对应点的差异值,该差异值为电压差;Calculate the difference between the output current and output voltage of the fuel cell stack and the corresponding point in the target volt-ampere characteristic curve of the fuel cell stack, which is the voltage difference;
若差异值等于零,即燃料电池的实际输出电流和电压在目标伏安特性曲线中,则保持占空比不变;If the difference value is equal to zero, that is, the actual output current and voltage of the fuel cell are within the target volt-ampere characteristic curve, the duty cycle is kept unchanged;
若差异值大于零,即燃料电池的实际输出电流和电压在目标伏安特性曲线上方,则调整占空比,增大燃料电堆的输出电流;If the difference is greater than zero, that is, the actual output current and voltage of the fuel cell are above the target volt-ampere characteristic curve, the duty cycle is adjusted to increase the output current of the fuel cell stack;
若差异值小于零,即燃料电池的实际输出电流和电压在目标伏安特性曲线下方,则调整占空比,减小燃料电堆的输出电流。If the difference is less than zero, that is, the actual output current and voltage of the fuel cell are below the target volt-ampere characteristic curve, the duty cycle is adjusted to reduce the output current of the fuel cell stack.
在另一个优选实施例中,一类变量为氢燃料电池系统的输出电流或氢燃料电池输出电流密度,或由此计算得到的变量;In another preferred embodiment, one type of variable is the output current of the hydrogen fuel cell system or the output current density of the hydrogen fuel cell, or a variable calculated therefrom;
二类变量为氢燃料电池系统的输出电压、输出功率或内阻补偿输出电压,或由此计算得到的变量。The second type of variables are the output voltage, output power or internal resistance compensated output voltage of the hydrogen fuel cell system, or variables calculated therefrom.
本发明中,通过对氢燃料电池三个子系统的响应速度进行合理分配,实现气体回路的随动控制、电力回路的协同特性曲线控制,基于不同层级的响应速度优化燃料电池系统的功率调节过程,实现氢燃料电池系统的多因素功率控制,控制策略灵活,电堆性能波动小,适用于不同应用需求的氢燃料电池系统的控制。In the present invention, the response speeds of the three subsystems of the hydrogen fuel cell are reasonably distributed to achieve follow-up control of the gas circuit and coordinated characteristic curve control of the power circuit. The power regulation process of the fuel cell system is optimized based on the response speeds at different levels to achieve multi-factor power control of the hydrogen fuel cell system. The control strategy is flexible, and the performance fluctuation of the stack is small. It is suitable for the control of hydrogen fuel cell systems with different application requirements.
在另一个优选实施例中,输出函数为单调函数。本发明中,目标输出功率与空压机控制信号间的关系为单调递增或递减,因而输出函数为单调函数,可根据氢燃料系统的具体参数对二者输出函数进行标定。In another preferred embodiment, the output function is a monotonic function. In the present invention, the relationship between the target output power and the air compressor control signal is monotonically increasing or decreasing, so the output function is a monotonic function, and the output functions of the two can be calibrated according to the specific parameters of the hydrogen fuel system.
具体地,即如图5所示,目标输出功率S1与空压机控制信号S2间的函数关系为单调递增或单调递减。以目标输出功率与空压机控制信号间的函数关系为正比例函数为例,当获取目标输出功率后,可根据输出函数匹配对应的空压机控制信号,进而根据空压机控制信号对氢燃料电池系统进行控制。Specifically, as shown in Figure 5, the functional relationship between the target output power S1 and the air compressor control signal S2 is monotonically increasing or monotonically decreasing. Taking the functional relationship between the target output power and the air compressor control signal as a positive proportional function as an example, after obtaining the target output power, the corresponding air compressor control signal can be matched according to the output function, and then the hydrogen fuel cell system can be controlled according to the air compressor control signal.
在另一个优选实施例中,空压机控制信号为空压机扭矩、转速、电流、功率或PWM占空比,或由此计算得到的变量。空压机控制信号能够对空压机进
行有效调节,调节空压机的转速、功率或流量,使阴极回路变化进而调节输出功率。In another preferred embodiment, the air compressor control signal is the air compressor torque, speed, current, power or PWM duty cycle, or a variable calculated therefrom. Effective regulation can be carried out to adjust the speed, power or flow of the air compressor, so that the cathode circuit changes and the output power can be adjusted.
下面对本发明提供的一种氢燃料电池系统的输出功率控制系统进行描述,下文描述的一种氢燃料电池系统的输出功率控制系统与上文描述的一种氢燃料电池系统的输出功率控制方法可相互对应参照。The output power control system of a hydrogen fuel cell system provided by the present invention is described below. The output power control system of a hydrogen fuel cell system described below and the output power control method of a hydrogen fuel cell system described above can be referred to each other.
一种氢燃料电池系统的输出功率控制系统,如图6所示,包括:目标获取单元601,用于获取氢燃料电池系统的目标输出功率;An output power control system of a hydrogen fuel cell system, as shown in FIG6 , includes: a target acquisition unit 601 for acquiring a target output power of the hydrogen fuel cell system;
输出控制单元602,用于根据所述目标输出功率确认燃料电池的阴极回路的空压机控制信号,并基于所述空压机控制信号调节阴极回路,使氢燃料电池的输出功率趋于目标输出功率;其中,所述空压机控制信号与目标输出功率间符合预设的输出函数。The output control unit 602 is used to confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell tends to the target output power; wherein the air compressor control signal and the target output power conform to a preset output function.
图7为本申请实施例提供的一种电子设备的示意图。参照图7,电子设备700包括:处理器710、存储器720以及通信接口730,这些组件通过通信总线740和/或其他形式的连接机构(未示出)互连并相互通讯,以执行一种氢燃料电池系统的输出功率控制方法,包括:步骤一:获取氢燃料电池系统的目标输出功率;步骤二:根据所述目标输出功率确认燃料电池的阴极回路的空压机控制信号,并基于所述空压机控制信号调节阴极回路,使氢燃料电池的输出功率趋于目标输出功率。其中,所述空压机控制信号与目标输出功率间符合预设的输出函数。FIG7 is a schematic diagram of an electronic device provided in an embodiment of the present application. Referring to FIG7, the electronic device 700 includes: a processor 710, a memory 720, and a communication interface 730. These components are interconnected and communicate with each other through a communication bus 740 and/or other forms of connection mechanisms (not shown) to perform an output power control method for a hydrogen fuel cell system, including: Step 1: Obtain the target output power of the hydrogen fuel cell system; Step 2: Confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power. Wherein, the air compressor control signal and the target output power conform to a preset output function.
其中,存储器720包括一个或多个(图中仅示出一个),其可以是,但不限于,随机存取存储器(Random Access Memory,简称RAM),只读存储器(Read Only Memory,简称ROM),可编程只读存储器(Programmable Read-Only Memory,简称PROM),可擦除只读存储器(Erasable Programmable Read-Only Memory,简称EPROM),电可擦除只读存储器(Electric Erasable Programmable Read-Only Memory,简称EEPROM)等。处理器710以及其他可能的组件可对存储器720进行访问,读和/或写其中的数据。The memory 720 includes one or more (only one is shown in the figure), which may be, but not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The processor 710 and other possible components may access the memory 720 to read and/or write data therein.
处理器710包括一个或多个(图中仅示出一个),其可以是一种集成电路芯片,具有信号的处理能力。上述的处理器710可以是通用处理器,包括中央处理器(Central Processing Unit,简称CPU)、微控制单元(Micro Controller Unit,
简称MCU)、网络处理器(Network Processor,简称NP)或者其他常规处理器;还可以是专用处理器,包括数字信号处理器(Digital Signal Processor,简称DSP)、专用集成电路(Application Specific Integrated Circuits,简称ASIC)、现场可编程门阵列(Field Programmable Gate Array,简称FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。The processor 710 includes one or more (only one is shown in the figure), which can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 710 can be a general-purpose processor, including a central processing unit (CPU), a microcontroller unit (MCU), and a processor. It may be a computer programmable logic device (MCU), a network processor (NP) or other conventional processors; it may also be a special-purpose processor, including a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.
通信接口730包括一个或多个(图中仅示出一个),可以用于和其他设备进行直接或间接地通信,以便进行数据的交互。例如,通信接口730可以是以太网接口;可以是移动通信网络接口,例如3G、4G、5G网络的接口;还是可以是具有数据收发功能的其他类型的接口。The communication interface 730 includes one or more (only one is shown in the figure), which can be used to communicate directly or indirectly with other devices to exchange data. For example, the communication interface 730 can be an Ethernet interface; it can be a mobile communication network interface, such as an interface of a 3G, 4G, or 5G network; or it can be other types of interfaces with data transceiving functions.
在存储器720中可以存储一个或多个计算机程序指令,处理器710可以读取并运行这些计算机程序指令,以实现本申请实施例提供的氢燃料电池系统的输出功率控制方法以及其他期望的功能。One or more computer program instructions may be stored in the memory 720 , and the processor 710 may read and execute these computer program instructions to implement the output power control method of the hydrogen fuel cell system provided in the embodiment of the present application and other desired functions.
可以理解,图7所示的结构仅为示意,电子设备700还可以包括比图7中所示更多或者更少的组件,或者具有与图7所示不同的配置。图7中所示的各组件可以采用硬件、软件或其组合实现。例如,电子设备700可以是单台服务器(或其他具有运算处理能力的设备)、多台服务器的组合、大量服务器的集群等,并且,既可以是物理设备也可以是虚拟设备。It is understood that the structure shown in FIG. 7 is for illustration only, and the electronic device 700 may also include more or fewer components than those shown in FIG. 7 , or have a configuration different from that shown in FIG. 7 . Each component shown in FIG. 7 may be implemented using hardware, software, or a combination thereof. For example, the electronic device 700 may be a single server (or other device with computing processing capabilities), a combination of multiple servers, a cluster of a large number of servers, etc., and may be both a physical device and a virtual device.
另一方面,本发明还提供一种计算机程序产品,所述计算机程序产品包括计算机程序,计算机程序可存储在非暂态计算机可读存储介质上,所述计算机程序被处理器执行时,计算机能够执行上述各方法所提供的氢燃料电池系统的输出功率控制方法,包括:步骤一:获取氢燃料电池系统的目标输出功率;步骤二:根据所述目标输出功率确认燃料电池的阴极回路的空压机控制信号,并基于所述空压机控制信号调节阴极回路,使氢燃料电池的输出功率趋于目标输出功率。其中,所述空压机控制信号与目标输出功率间符合预设的输出函数。On the other hand, the present invention also provides a computer program product, the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can execute the output power control method of the hydrogen fuel cell system provided by the above methods, including: step 1: obtaining the target output power of the hydrogen fuel cell system; step 2: confirming the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal, so that the output power of the hydrogen fuel cell tends to the target output power. Wherein, the air compressor control signal and the target output power meet the preset output function.
又一方面,本发明还提供一种非暂态计算机可读存储介质,其上存储有计算机程序,该计算机程序被处理器执行时实现以执行上述各方法提供的氢燃料电池系统的输出功率控制方法,包括:步骤一:获取氢燃料电池系统的目标输出功率;步骤二:根据所述目标输出功率确认燃料电池的阴极回路的空压机控制信号,并基于所述空压机控制信号调节阴极回路,使氢燃料电池的输出功率
趋于目标输出功率。其中,所述空压机控制信号与目标输出功率间符合预设的输出函数。例如,计算机可读存储介质可以实现为图7中电子设备700中的存储器720。On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the output power control method of the hydrogen fuel cell system provided by the above-mentioned methods, including: step one: obtaining the target output power of the hydrogen fuel cell system; step two: confirming the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal, so that the output power of the hydrogen fuel cell The air compressor control signal and the target output power are in accordance with a preset output function. For example, the computer-readable storage medium can be implemented as the memory 720 in the electronic device 700 in FIG. 7 .
以上所描述的装置实施例仅仅是示意性的,其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下,即可以理解并实施。The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到各实施方式可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件。基于这样的理解,上述技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品可以存储在计算机可读存储介质中,如ROM/RAM、磁碟、光盘等,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行各个实施例或者实施例的某些部分所述的方法。Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM/RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.
最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
- 一种氢燃料电池系统的输出功率控制方法,其特征在于,包括:A method for controlling output power of a hydrogen fuel cell system, comprising:获取氢燃料电池系统的目标输出功率;Obtaining a target output power of a hydrogen fuel cell system;根据所述目标输出功率确认燃料电池的阴极回路的空压机控制信号,并基于所述空压机控制信号调节阴极回路,使氢燃料电池的输出功率趋于目标输出功率;confirming an air compressor control signal of a cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power;其中,所述空压机控制信号与目标输出功率间符合预设的输出函数;Wherein, the air compressor control signal and the target output power conform to a preset output function;所述控制方法还包括:The control method further comprises:获取所述氢燃料电池输出的一类变量及二类变量与预设的特性曲线的偏离信息;Obtaining deviation information between the first-class variable and the second-class variable output by the hydrogen fuel cell and a preset characteristic curve;所述氢燃料电池系统的电气回路根据所述偏离信息进行调节,使一类变量、二类变量趋于预设的特性曲线上。The electrical circuit of the hydrogen fuel cell system is adjusted according to the deviation information so that the first type of variables and the second type of variables tend to a preset characteristic curve.
- 根据权利要求1所述的一种氢燃料电池系统的输出功率控制方法,其特征在于,所述控制方法还包括:The output power control method of a hydrogen fuel cell system according to claim 1, characterized in that the control method further comprises:根据所述氢燃料电池系统的变化状态对背压阀和/或排气阀进行调节,使系统状态满足预设的状态需求。The back pressure valve and/or the exhaust valve are adjusted according to the changing state of the hydrogen fuel cell system so that the system state meets the preset state requirements.
- 根据权利要求1所述的一种氢燃料电池系统的输出功率控制方法,其特征在于,所述一类变量为氢燃料电池系统的输出电流或输出电流密度,或由此计算得到的变量;The output power control method of a hydrogen fuel cell system according to claim 1, characterized in that the first type of variable is the output current or output current density of the hydrogen fuel cell system, or a variable calculated therefrom;所述二类变量为氢燃料电池系统的输出电压、输出功率或内阻补偿输出电压,或由此计算得到的变量。The second type of variables are the output voltage, output power or internal resistance compensated output voltage of the hydrogen fuel cell system, or variables calculated therefrom.
- 根据权利要求1所述的一种氢燃料电池系统的输出功率控制方法,其特征在于,所述的输出函数为单调函数。The output power control method of a hydrogen fuel cell system according to claim 1 is characterized in that the output function is a monotonic function.
- 根据权利要求1所述的一种氢燃料电池系统的输出功率控制方法,其特征在于,所述空压机控制信号为空压机扭矩、转速、电流、功率或PWM占空比,或由此计算得到的变量。According to the output power control method of a hydrogen fuel cell system according to claim 1, it is characterized in that the air compressor control signal is the air compressor torque, speed, current, power or PWM duty cycle, or a variable calculated therefrom.
- 一种氢燃料电池系统的输出功率控制系统,其特征在于,包括:An output power control system of a hydrogen fuel cell system, characterized by comprising:目标获取单元,用于获取氢燃料电池系统的目标输出功率; A target acquisition unit, used to acquire a target output power of the hydrogen fuel cell system;输出控制单元,用于根据所述目标输出功率确认燃料电池的阴极回路的空压机控制信号,并基于所述空压机控制信号调节阴极回路,使氢燃料电池的输出功率趋于目标输出功率;其中,所述空压机控制信号与目标输出功率间符合预设的输出函数。An output control unit is used to confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell tends to the target output power; wherein the air compressor control signal and the target output power conform to a preset output function.
- 一种电子设备,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序,其特征在于,所述处理器执行所述程序时实现如权利要求1至6任一项所述一种氢燃料电池系统的输出功率控制方法。An electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the output power control method of a hydrogen fuel cell system as claimed in any one of claims 1 to 6 is implemented.
- 一种非暂态计算机可读存储介质,其上存储有计算机程序,其特征在于,所述计算机程序被处理器执行时实现如权利要求1至7任一项所述一种氢燃料电池系统的输出功率控制方法。 A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, an output power control method of a hydrogen fuel cell system as described in any one of claims 1 to 7 is implemented.
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