Hydrogen system control method, device and equipment of fuel cell
A fuel cell and control method technology, which is applied in the direction of fuel cells, fuel cell additives, electrical components, etc., can solve the problems of inability to obtain precise control effects, poor system dynamic performance, and no decoupling, so as to achieve optimal static response and Dynamic response effect, short response time, robust effect
Inactive Publication Date: 2021-05-14
北京氢澜科技有限公司
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Problems solved by technology
[0005] (2) Both the hydrogen injector and the hydrogen circulation pump adopt closed-loop control, but no decoupling
[0006] The main disadvantages of these two control methods are that they cannot obtain precise control effects, and the system dynamic performance is poor.
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[0067] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implement...
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The invention provides a hydrogen system control method, device and equipment of a fuel cell. The method comprises the following steps of: acquiring target in-pile flow and target in-pile pressure according to output power; acquiring current in-pile flow and in-pile pressure; calculating a flow error according to the target in-pile flow and the in-pile flow, and acquiring the duty ratio of a hydrogen ejector and the decoupling rotating speed of a hydrogen circulating pump according to the flow error; calculating a pressure error according to the target in-pile pressure and the in-pile pressure, and acquiring the rotating speed of a hydrogen circulating pump and the duty ratio of a hydrogen ejector according to the pressure error; calculating a target rotating speed according to the rotating speed of the hydrogen circulating pump, the decoupling rotating speed of the hydrogen circulating pump and a calibrated feedforward compensation rotating speed; calculating a target duty ratio according to the duty ratio of the hydrogen ejector, the duty ratio of the hydrogen ejector and a calibrated front-end compensation duty ratio; and adjusting the hydrogen ejector and the hydrogen circulating pump according to the target duty ratio. The static response and dynamic response effects of the hydrogen control system are optimized, the robustness of the system is higher, and the response time is shorter.
Description
technical field [0001] The invention relates to the field of fuel cell engines, in particular to a method, device and equipment for controlling a hydrogen system of a fuel cell. Background technique [0002] In the fuel cell engine system, the control of the hydrogen subsystem is very important. The control of the hydrogen subsystem mainly includes the control of the hydrogen injector, the control of the drain valve and the control of the hydrogen circulation pump, and the system is usually a strongly coupled system. [0003] There are two common control methods at present: [0004] (1) The hydrogen injector adopts closed-loop control, and the hydrogen circulation pump adopts open-loop control. [0005] (2) Both the hydrogen injector and the hydrogen circulation pump adopt closed-loop control without decoupling. [0006] The main drawbacks of these two control methods are that precise control effects cannot be obtained, and the dynamic performance of the system is poor. ...
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IPC IPC(8): H01M8/0438H01M8/04992H01M8/04082H01M8/04089
CPCH01M8/04089H01M8/04097H01M8/04201H01M8/0438H01M8/04992Y02E60/50
Inventor 孙一堡庞深
Owner 北京氢澜科技有限公司