CN115799579A - Output power control method, system, device and medium for hydrogen fuel cell system - Google Patents
Output power control method, system, device and medium for hydrogen fuel cell system Download PDFInfo
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 119
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 119
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Abstract
The invention provides an output power control method, system, device and medium of a hydrogen fuel cell system, wherein the method comprises the steps of obtaining target output power of the hydrogen fuel cell system; confirming an air compressor control signal of a cathode loop of the fuel cell according to the target output power, and adjusting the cathode loop based on the air compressor control signal to enable the output power of the hydrogen fuel cell to approach the target output power; the air compressor control signal and the target output power accord with a preset output function. Acquiring deviation information of a first type variable and a second type variable output by the hydrogen fuel cell and a preset characteristic curve; the electrical circuit of the hydrogen fuel cell system is adjusted according to the deviation information so that the variable approaches the preset characteristic curve. According to the invention, the control signal of the air compressor is regulated and controlled by using the preset output function under the condition of confirming the target output power, the actual power output requirement can be met according to the output function under different application scenes, the applicable range is wide, and the control implementation effect is good.
Description
Technical Field
The present invention relates to the field of hydrogen fuel cell technology, and in particular, to a method, a system, a device, and a medium for controlling output power of a hydrogen fuel cell system.
Background
The hydrogen fuel cell system at least comprises three subsystems of a cooling loop, a cathode loop and an electric loop, wherein the subsystems are mutually coordinated and restricted, and set values are changed in turn in the output process and wait for the set values to reach and stabilize at the set values. The cathode loop simultaneously controls a back pressure valve and an air compressor according to the instruction of a fuel cell engine control system to enable the flow and the pressure of the cathode loop to reach the designated values, and the performance fluctuation of the electric pile is large in the variable load process due to the mutual coupling influence of the flow, the pressure and the gas consumption. And moreover, the control strategies of constant current, constant voltage, constant power and the like are adopted, and corresponding working condition parameters such as pressure, flow and the like can be calculated and called only according to the input signals of the system power requirements, and the working condition parameters correspond to the system power requirements one to one, so that the method is not suitable for the actual application requirements in wide application scenes.
Disclosure of Invention
The invention provides an output power control method, system, equipment and storage medium of a hydrogen fuel cell system, which are used for solving the problems that the control of the hydrogen fuel cell system in the prior art is fixed in control strategy, large in performance fluctuation of a galvanic pile and not suitable for actual application requirements in wide application scenes, and realizing multi-factor power control of the hydrogen fuel cell system.
In a first aspect, the present invention provides an output power control method of a hydrogen fuel cell system, comprising:
acquiring target output power of a hydrogen fuel cell system;
confirming an air compressor control signal of a cathode loop of the fuel cell according to the target output power, and adjusting the cathode loop based on the air compressor control signal to enable the output power of the hydrogen fuel cell to approach the target output power;
and the control signal of the air compressor and the target output power accord with a preset output function.
According to the present invention, there is provided an output power control method of a hydrogen fuel cell system, the control method further comprising:
and adjusting the back pressure valve and/or the exhaust valve according to the change state of the hydrogen fuel cell system to enable the system state to meet the preset state requirement.
According to an output power control method of a hydrogen fuel cell system provided by the present invention, the control method further includes:
acquiring deviation information of a first type variable and a second type variable output by the hydrogen fuel cell and a preset characteristic curve;
and adjusting an electric loop of the hydrogen fuel cell system according to the deviation information to enable the first-class variable and the second-class variable to approach to a preset characteristic curve.
According to the output power control method of the hydrogen fuel cell system provided by the invention, the one type of variable is the output current or the output current density of the hydrogen fuel cell system, or the variable obtained by calculation;
the second type of variable is output voltage, output power or internal resistance compensation output voltage of the hydrogen fuel cell system, or a variable obtained by calculation.
According to the output power control method of the hydrogen fuel cell system provided by the invention, the output function is a monotonic function.
According to the output power control method of the hydrogen fuel cell system provided by the invention, the air compressor control signal is air compressor torque, rotating speed, current, power or PWM duty ratio or a variable obtained by calculation.
In a second aspect, the present invention also provides an output power control system of a hydrogen fuel cell system, comprising:
a target acquisition unit for acquiring a target output power of the hydrogen fuel cell system;
the output control unit is used for confirming an air compressor control signal of a cathode loop of the fuel cell according to the target output power and adjusting the cathode loop based on the air compressor control signal so as to lead the output power of the hydrogen fuel cell to approach the target output power; and the control signal of the air compressor and the target output power accord with a preset output function.
The present invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the output power control system of any one of the above-mentioned hydrogen fuel cell systems when executing the program.
The present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements an output power control system of any one of the hydrogen fuel cell systems described above.
According to the output power control method, system, equipment and medium of the hydrogen fuel cell system, the preset output function is used for regulating and controlling the control signal of the air compressor under the condition of confirming the target output power, the actual power output requirement can be met according to the output function under different application scenes, the applicable range is wide, the control implementation effect is good, in addition, after the cathode loop is regulated based on the control signal of the air compressor, the back pressure valve and/or the exhaust valve are/is regulated according to the change state of the hydrogen fuel cell system, the mutual coupling influence of flow and pressure in the control regulation process is reduced, the hydrogen fuel cell is subjected to sequential follow-up control regulation, the multi-factor power control of the hydrogen fuel cell system is realized, the control strategy is flexible, the pile performance fluctuation is small, and the method, system, equipment and medium are suitable for controlling the hydrogen fuel cell systems with different application requirements.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
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In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is one of schematic flow charts of an output power control method of a hydrogen fuel cell system provided by the present invention;
FIG. 2 is a second schematic flow chart of the method for controlling the output power of the hydrogen fuel cell system according to the present invention;
FIG. 3 is a schematic illustration of condition curves and characteristic curves provided by the present invention;
fig. 4 is a schematic structural view of a hydrogen fuel cell system provided by the present invention;
FIG. 5 is a schematic diagram of the output function provided by the present invention;
fig. 6 is a schematic diagram of an output power control system of a hydrogen fuel cell system according to the present invention;
fig. 7 is a schematic structure of an electronic device provided by the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present application more clearly, and therefore are only used as examples, and the protection scope of the present application is not limited thereby.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.
In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
An output power control method of a hydrogen fuel cell system of the present invention is described below with reference to fig. 1, including:
the method comprises the following steps: acquiring target output power of a hydrogen fuel cell system;
step two: and confirming an air compressor control signal of a cathode loop of the fuel cell according to the target output power, and adjusting the cathode loop based on the air compressor control signal to enable the output power of the hydrogen fuel cell to approach the target output power. And the control signal of the air compressor and the target output power accord with a preset output function.
Further, as shown in fig. 2, the present invention comprises the steps of:
s201, acquiring target output power; s202, confirming an air compressor control signal according to the target output power; s203, adjusting a cathode loop according to the air compressor control signal, and further adjusting the cathode gas flow; s204, the output power of the hydrogen fuel cell approaches the target output power with the change in the cathode gas flow rate.
Specifically, the hydrogen fuel cell system comprises three subsystems of a cooling loop, a cathode loop and an electric power loop, after the target output power is obtained in the first step, the cathode loop obtains a corresponding air compressor control signal according to a preset output function between the target output power and the target output power, and adjusts an air compressor based on the air compressor control signal, so that the air flow of the electric pile is changed, the output power of the fuel cell is changed, and the output power of the fuel cell tends to the target output power.
It is noted that the present invention tends to include, but is not limited to, making the difference between the output power of the fuel cell and the target output power small.
As a preferable scheme, the present invention can make the output power of the hydrogen fuel cell system the same as the target output power based on the air compressor control signal obtained by the preset output function, and realize effective control of the output power of the hydrogen fuel cell system.
According to the invention, under the condition of confirming the target output power, the control signal of the air compressor is regulated and controlled by using the preset output function, the actual power output requirement can be solved according to the output function under different application scenes, the application range is wide, and the control implementation effect is good.
In a preferred embodiment, the control method further comprises:
and adjusting the back pressure valve and/or the exhaust valve according to the change state of the hydrogen fuel cell system to enable the system state to meet the preset state requirement.
Specifically, after the target output power of the hydrogen fuel cell system is obtained in the first step and the cathode loop is adjusted based on the air compressor control signal in the second step, the system state of the hydrogen fuel cell system changes, that is, the air flow input to the stack changes after the air compressor is adjusted. In the embodiment, the back pressure valve and/or the exhaust valve are/is regulated in a follow-up manner by following the change of the air flow, and the air pressure is regulated, so that the system state meets the preset state requirement.
Further, 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 a corresponding air compressor control signal based on a preset output function to regulate the air compressor, so that the air flow rate is increased; after the system detects that the air flow quantity is increased, the opening degree of the back pressure valve is adjusted, and the air pressure in the system is stable. It goes without saying that the invention also makes it possible to adjust the air outlet valve independently or to adjust the back pressure valve and the air outlet valve in a coordinated manner in order to stabilize the air pressure in the system.
Specifically, the state requirement is a requirement for normal and stable operation of the hydrogen fuel cell system, for example, a requirement for humidity change of the stack is met, and it is within the ability of a person skilled in the art to adjust the following adjustment strategy of the back pressure valve and the exhaust valve according to the characteristics of the hydrogen fuel cell system, so that the following adjustment of the back pressure valve and/or the exhaust valve meets the preset state requirement.
According to the invention, after the cathode loop is adjusted based on the air compressor control signal, the back pressure valve and/or the exhaust valve are/is adjusted according to the change state of the hydrogen fuel cell system, the mutual coupling influence of flow and pressure in the control and adjustment process is reduced, the follow-up control adjustment with sequential time sequence is carried out on the hydrogen fuel cell, the multi-factor power control of the hydrogen fuel cell system is realized, the control strategy is flexible, the pile performance fluctuation is small, and the method is suitable for the control of the hydrogen fuel cell system with different application requirements.
In the hydrogen fuel cell system of the present invention having three subsystems, as shown in fig. 4, the cooling circuit has a long load-up time due to the large inertia of the water pump and the medium inertia; the load-rising time of the cathode loop subsystem is longer due to the reasons of large inertia of an air compressor, large medium flow and the like; the invention can save the time for waiting the cathode gas supply condition to reach the new set value and stabilize, thereby achieving higher load change response speed, reducing the gas consumption and supply change in the load change process and prolonging the service life of the electric pile.
In another preferred embodiment, the control method further includes:
acquiring deviation information of a first-class variable and a second-class variable output by the hydrogen fuel cell and a preset characteristic curve; and adjusting an electric loop of the hydrogen fuel cell system according to the deviation information to enable the first-class variable and the second-class variable to approach to a preset characteristic curve.
In this embodiment, the characteristic curve is a curve directly or indirectly related to the first-class variable and the second-class variable, and exemplarily, the abscissa and the ordinate of the characteristic curve are the first-class variable and the second-class variable respectively, and the first-class variable and the second-class variable are limited.
Specifically, in order to realize that the first-type variable and the second-type variable tend to be on the preset characteristic curve, the deviation information of the point on the characteristic curve, which is closest to the first-type variable and the second-type variable, may be obtained, including the deviation distance and the deviation direction. The control variable of the output control module can be adjusted according to deviation, and the distance between the first-class variable and the second-class variable and the characteristic curve approaches to 0 or is equal to 0 by using an adjusting means of open-loop control or closed-loop control.
For illustration, as shown in fig. 3, each of the first-type variables may correspond to a second-type variable within a reasonable range of the first-type variables under the condition that the state parameter of the hydrogen fuel cell is not changed, and the correspondence relationship forms a series of first-type variable-second-type variable fixed condition curves corresponding to fixed conditions, hereinafter referred to as condition curves, where the change in the state of the hydrogen fuel cell causes the first-type variable and the second-type variable to change on the condition curves; under the condition that the first kind of variable and the control variable are not changed, the change of an output control circuit of the hydrogen fuel cell can cause the change of the second kind of variable; with the control variables unchanged, changes in the state parameters of the hydrogen fuel cell can result in changes in the first and second type variables. For convenience of explanation, the following embodiments are all exemplified by the case where one type of variable and two types of variable meet a condition curve. However, the present invention is not limited to the case where one type of variable and two types of variables meet the condition curve. When the first-type variable and the second-type variable do not conform to the condition curve, a person skilled in the art can adjust the control variable according to the information of the hydrogen fuel cell, so that the first-type variable and the second-type variable conform to the preset characteristic curve.
Specifically, a preset first-class variable-second-class variable characteristic curve is hereinafter referred to as a characteristic curve, is not superposed with any one of the condition curves, but is intersected with a series of condition curves, and each intersected condition curve only has a limited number of intersection points; during the operation of the system, when the actual values of the first-class variable and the second-class variable deviate from the characteristic curve, the control variable is adjusted according to the deviation direction and the deviation magnitude, so that the first-class variable and the second-class variable output by the hydrogen fuel cell return to the characteristic curve.
As shown in fig. 3 and 4, the power loop subsystem of the power sub-loop has the fastest response time due to the reasons of high switching frequency, fast duty ratio adjustment and the like, and the power loop subsystem automatically realizes the real-time automatic adjustment of the power loop in a mode of keeping on a predetermined characteristic curve according to the actual output performance of the galvanic pile in the cathode gas supply condition change process, thereby saving the time required by waiting for the cathode gas supply condition to reach a new set value and be stable, saving the time consumed by the limitation of the variable load rate of the power loop, and therefore achieving higher variable load response speed. Meanwhile, because the output voltage and current of the galvanic pile are kept on a preset characteristic curve, the potential fluctuation of the catalyst can be reduced, the gas consumption and supply change in the load change process can be reduced, and the service life of the galvanic pile can be prolonged.
According to the invention, the control variable is controlled according to the deviation information of the first-class variable, the second-class variable and the characteristic curve, the whole hydrogen fuel cell system is controlled to always keep the output characteristic corresponding to the preset characteristic curve, the millisecond-level response time is realized through the output control circuit, and the stability and the service life of the hydrogen fuel cell are improved.
As a preferred scheme, in order to adjust the first-class variable and the second-class variable, a negative feedback control method or a positive feedback control method can be adopted to control the control variable, and the control aims to enable the first-class variable and the second-class variable to tend to a characteristic curve.
In this embodiment, the hydrogen fuel cell parameters are taken as follows: the first-class variable is the output current of the galvanic pile, the second-class variable is the output voltage of the galvanic pile, and the first-class variable and the second-class variable are adjusted by changing the duty ratio of an output switch of the direct-current transformer; the output current and the output voltage of the hydrogen fuel cell are kept on the preset characteristic curve through the automatic feedback control of the output duty ratio of the direct current transformer.
Taking a negative feedback control method and taking a working state as a reference state as an example, the control process specifically comprises the following steps:
the method comprises the steps of monitoring the output current and the output voltage of a galvanic pile of the hydrogen fuel cell in real time, comparing the output current and the output voltage with a preset characteristic curve, and adjusting the output current and the output voltage of the hydrogen fuel cell on the input side of an output direct current transformer FDC of the hydrogen fuel cell, wherein the adjusting process comprises the following steps:
if the output current and the output voltage are positioned below the target volt-ampere characteristic curve of the galvanic pile, the output current of the fuel cell output direct current transformer is reduced by adjusting the duty ratio of an internal direct current transformation circuit, so that the output voltage is improved and is close to the characteristic curve;
if the output current and the output voltage are positioned above the target volt-ampere characteristic curve of the galvanic pile, the output current of the fuel cell output direct current transformer is increased by adjusting the duty ratio of the internal direct current transformation circuit, so that the output voltage is reduced and is close to the characteristic curve.
In the implementation mode, the output current and the output voltage of the hydrogen fuel cell are adjusted on the input side of the output direct current transformer of the hydrogen fuel cell, and under the condition that the working condition parameters of the hydrogen fuel cell are kept or changed, the current and the voltage values on the input side are always positioned on a target volt-ampere characteristic curve of the pile by adjusting the switching duty ratio of an electronic device of a Buck-Boost circuit, so that the electric energy is output according to the preset output performance of the hydrogen fuel cell.
The implementation mode ensures that the current and voltage values entering the input side of the transformer are positioned on the preset volt-ampere characteristic curve of the galvanic pile, so that the whole fuel cell system always keeps the preset output characteristic, millisecond-level response time is realized through duty ratio control of the transformer side, and the running stability and the service life of the galvanic pile are improved.
Specifically, the embodiment sets the target parameter of the FDC control as the distance of the current voltage output by the cell stack from the target current-voltage characteristic curve on the current-voltage characteristic curve; if the actual output current voltage of the galvanic pile is below the target curve, reducing the output electric energy of the galvanic pile through FDC so as to reduce the actual output current of the galvanic pile, improve the voltage and approach the target curve from the lower part; and if the actual output current voltage of the galvanic pile is above the target curve, increasing the output electric energy of the galvanic pile through FDC so as to increase the actual output current of the galvanic pile, reduce the voltage and approach the target curve from the upper part.
The embodiment takes the FDC as an important part of the control of the galvanic pile, and because the response speed of the circuit in the FDC is far higher than that of the components of the hydrogen loop and the air loop, the fast response characteristic of the FDC can be utilized to realize the actual output locking of the galvanic pile on the characteristic curve in the dynamic change process of the components of the hydrogen loop and the air loop, thereby improving the running stability and the service life of the galvanic pile.
When the fuel cell is in an operating state, the duty ratio of the output direct current transformer of the fuel cell is adjusted by calculating the difference value between the output current and the output voltage of the fuel cell stack and the target volt-ampere characteristic curve of the fuel cell stack;
the difference value is a voltage difference under the same current, a current difference under the same voltage, or a numerical value obtained by calculating the voltage difference and the current difference.
If the voltage difference is used as the difference value, when the fuel cell is in the running state, the duty ratio adjusting process of the fuel cell output direct current transformer specifically comprises the following steps:
calculating difference values of output current and output voltage of the fuel cell stack and corresponding points in a target volt-ampere characteristic curve of the cell stack, wherein the difference values are voltage difference values;
if the difference value is equal to zero, namely the actual output current and voltage of the fuel cell are in the target volt-ampere characteristic curve, keeping the duty ratio unchanged;
if the difference value is larger than zero, namely the actual output current and the actual voltage of the fuel cell are above the target volt-ampere characteristic curve, adjusting the duty ratio and increasing the output current of the fuel cell stack;
and if the difference value is smaller than zero, namely the actual output current and the actual output voltage of the fuel cell are below the target volt-ampere characteristic curve, adjusting the duty ratio and reducing the output current of the fuel cell stack.
In another preferred embodiment, one type of variable is the output current of the hydrogen fuel cell system or the hydrogen fuel cell output current density, or a variable calculated therefrom;
the second type of variable is the output voltage, output power or internal resistance compensation output voltage of the hydrogen fuel cell system, or a variable calculated from the output voltage, output power or internal resistance compensation output voltage.
According to the invention, the response speeds of the three subsystems of the hydrogen fuel cell are reasonably distributed, so that the follow-up control of a gas loop and the cooperative characteristic curve control of an electric power loop are realized, the power regulation process of the fuel cell system is optimized based on the response speeds of different levels, the multi-factor power control of the hydrogen fuel cell system is realized, the control strategy is flexible, the performance fluctuation of the pile is small, and the method is suitable for the control of the hydrogen fuel cell systems with different application requirements.
In another preferred embodiment, the output function is a monotonic function. In the invention, the relation between the target output power and the control signal of the air compressor is monotonously increased or decreased, so that the output function is a monotonous function, and the output functions can be calibrated according to the specific parameters of the hydrogen fuel system.
Specifically, as shown in fig. 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 function relationship between the target output power and the air compressor control signal as a proportional function as an example, after the target output power is obtained, the corresponding air compressor control signal can be matched according to the output function, and then the hydrogen fuel cell system is controlled according to the air compressor control signal.
In another preferred embodiment, the air compressor control signal is air compressor torque, speed, current, power or PWM duty cycle, or a variable calculated therefrom. The air compressor control signal can effectively adjust the air compressor, and adjust the rotating speed, power or flow of the air compressor, so that the cathode loop is changed to adjust the output power.
The output power control system of a hydrogen fuel cell system according to the present invention will be described below, and 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 may be referred to in correspondence with each other.
An output power control system of a hydrogen fuel cell system, as shown in fig. 6, includes: a target acquisition unit 601 for acquiring a target output power of the hydrogen fuel cell system;
an output control unit 602, configured to determine an air compressor control signal of a 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; and the control signal of the air compressor and the target output power accord with a preset output function.
Fig. 7 is a schematic view of an electronic device according to an embodiment of the present application. Referring to fig. 7, the electronic device 700 includes: processor 710, memory 720, and communication interface 730, interconnected and in communication with each other via communication bus 740 and/or other forms of connection mechanisms (not shown), to perform a method of output power control for a hydrogen fuel cell system, comprising: the method comprises the following steps: acquiring target output power of a hydrogen fuel cell system; step two: and confirming an air compressor control signal of a cathode loop of the fuel cell according to the target output power, and adjusting the cathode loop based on the air compressor control signal to enable the output power of the hydrogen fuel cell to approach the target output power. And the control signal of the air compressor and the target output power accord with 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 Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. Processor 710, and possibly other components, may access, read, and/or write data to memory 720.
One or more computer program instructions may be stored in the memory 720 and read and executed by the processor 710 to implement the output power control method of the hydrogen fuel cell system provided by the embodiments of the present application and other desired functions.
It will be appreciated that the configuration shown in fig. 7 is merely illustrative and that electronic device 700 may include more or fewer components than shown in fig. 7 or have a different configuration than shown in fig. 7. The components shown in fig. 7 may be implemented in hardware, software, or a combination thereof. For example, the electronic device 700 may be a single server (or other device having an arithmetic processing capability), a combination of a plurality of servers, a cluster of a large number of servers, or the like, and may be a physical device or a virtual device.
In another aspect, the present invention also provides a computer program product including a computer program, the computer program being stored on a non-transitory computer-readable storage medium, the computer program being capable of executing, when executed by a processor, the output power control method of a hydrogen fuel cell system provided by the above methods, including: the method comprises the following steps: acquiring target output power of a hydrogen fuel cell system; step two: and confirming an air compressor control signal of a cathode loop of the fuel cell according to the target output power, and adjusting the cathode loop based on the air compressor control signal to enable the output power of the hydrogen fuel cell to approach the target output power. And the control signal of the air compressor and the target output power accord with a preset output function.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for controlling output power of a hydrogen fuel cell system provided by the above methods, including: the method comprises the following steps: acquiring target output power of a hydrogen fuel cell system; step two: and confirming an air compressor control signal of a cathode loop of the fuel cell according to the target output power, and adjusting the cathode loop based on the air compressor control signal to enable the output power of the hydrogen fuel cell to approach the target output power. And the control signal of the air compressor and the target output power accord with a preset output function. For example, the computer-readable storage medium may be embodied as memory 720 in electronic device 700 in FIG. 7.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. An output power control method of a hydrogen fuel cell system, characterized by comprising:
acquiring target output power of a hydrogen fuel cell system;
confirming an air compressor control signal of a cathode loop of the fuel cell according to the target output power, and adjusting the cathode loop based on the air compressor control signal to enable the output power of the hydrogen fuel cell to approach the target output power;
the control signal of the air compressor and the target output power accord with a preset output function;
the control method further comprises the following steps:
acquiring deviation information of a first type variable and a second type variable output by the hydrogen fuel cell and a preset characteristic curve;
and adjusting an electric loop of the hydrogen fuel cell system according to the deviation information to enable the first-class variable and the second-class variable to approach to a preset characteristic curve.
2. The output power control method of a hydrogen fuel cell system according to claim 1, characterized by further comprising:
and adjusting the back pressure valve and/or the exhaust valve according to the change state of the hydrogen fuel cell system to enable the system state to meet the preset state requirement.
3. The output power control method of a hydrogen fuel cell system according to claim 1, wherein the one type of variable is an output current or an output current density of the hydrogen fuel cell system, or a variable calculated therefrom;
the second type of variable is output voltage, output power or internal resistance compensation output voltage of the hydrogen fuel cell system, or a variable calculated by the output voltage, the output power or the internal resistance compensation output voltage.
4. The output power control method of a hydrogen fuel cell system according to claim 1, characterized in that the output function is a monotonic function.
5. The output power control method of a hydrogen fuel cell system according to claim 1, characterized in that the air compressor control signal is air compressor torque, rotational speed, current, power or PWM duty ratio, or a variable calculated therefrom.
6. An output power control system of a hydrogen fuel cell system, characterized by comprising:
a target acquisition unit for acquiring a target output power of the hydrogen fuel cell system;
the output control unit is used for confirming an air compressor control signal of a cathode loop of the fuel cell according to the target output power and adjusting the cathode loop based on the air compressor control signal so as to lead the output power of the hydrogen fuel cell to approach the target output power; and the control signal of the air compressor and the target output power accord with a preset output function.
7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements a method of controlling output power of a hydrogen fuel cell system according to any one of claims 1 to 6 when executing the program.
8. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements an output power control method of a hydrogen fuel cell system according to any one of claims 1 to 7.
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| CN113571743A (en) * | 2021-07-22 | 2021-10-29 | 重庆交通职业学院 | Output power tracking and efficiency optimization control method for fuel cell |
| CN113654233A (en) * | 2021-06-29 | 2021-11-16 | 电子科技大学 | Combined system and method of fuel cell and air energy water heater |
| CN114695927A (en) * | 2020-12-31 | 2022-07-01 | 宝能汽车集团有限公司 | Control method of hydrogen fuel cell system, and vehicle |
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| CN112652791A (en) * | 2020-12-22 | 2021-04-13 | 佛山仙湖实验室 | Hydrogen and air coordination control method for hydrogen fuel cell |
| CN114695927A (en) * | 2020-12-31 | 2022-07-01 | 宝能汽车集团有限公司 | Control method of hydrogen fuel cell system, and vehicle |
| CN113654233A (en) * | 2021-06-29 | 2021-11-16 | 电子科技大学 | Combined system and method of fuel cell and air energy water heater |
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