Method for pressure and flow control and fault processing of air system of hydrogen fuel cell
A troubleshooting method, fuel cell technology, applied in the direction of fuel cell control, fuel cell, fuel cell additives, etc.
Pending Publication Date: 2021-02-26
WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD
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Problems solved by technology
[0004] In view of this, the present invention provides a hydrogen fuel cell air system pressure flow control and fault handling method to solve the problem of coordinated control of fuel cell air system pressure and flow and fault handling process. Under this control method, Make hydrogen fuel cell air system more stable and improve system efficiency
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[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0018] Please refer to figure 1 and figure 2 , the embodiment of the present invention provides a hydrogen fuel cell air system pressure flow control and fault handling method, including the following steps:
[0019] Step S1, determine the target air flow and target air pressure that need to be set according to the target current that the hydrogen fuel cell air system needs to set; The calculated value of the vehicle bus voltage;
[0020] Step S2, control the target air flow and target air pressure through the PI controller, use the MATLAB toolbox to fit the experimental calibration data of the hydrogen fuel cell air system, and establish the first fitting of the air flow, air pressure and air compressor speed function n = f 1 (m, p) and the second ...
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The invention provides a method for pressure and flow control and fault processing of an air system of a hydrogen fuel cell. The method comprises the following steps: determining target air flow and target air pressure required to be set according to target current required to be set by the air system of the hydrogen fuel cell; controlling the target air flow and the target air pressure through aPI controller, conducting fitting on the experimental calibration data of the air system of the hydrogen fuel cell, establishing a first fitting function and a second fitting function, and acquiring the rotating speed of an air compressor and the opening degree of a throttle valve; and after a time period t and after the air system of the hydrogen fuel cell operates stably, acquiring actual air pressure and actual air flow information of real-time operation of the air system of the hydrogen fuel cell, calculating a first difference value between the target air pressure and the actual air pressure and a second difference value between the target air flow and the actual air flow, and judging whether the first difference value and the second difference value are in a threshold range, whereinif so, that the parameters of the air system of the hydrogen fuel cell are indicated to in a normal range.
Description
technical field [0001] The invention relates to the technical field of fuel cells, in particular to a pressure flow control and fault handling method for an air system of a hydrogen fuel cell. Background technique [0002] With the development of new energy vehicle technology, fuel cell vehicles gradually show more and more advantages. Hydrogen fuel cell is an efficient and clean power supply device in new energy research. Hydrogen energy is a renewable energy that can be produced by electrolysis of water, natural gas and other methods. Therefore, hydrogen fuel cell vehicles are more environmentally friendly in terms of emissions, energy consumption and fuel preparation. The electric energy released by the hydrogen fuel cell can be used to power the vehicle after being stabilized, without any mechanical loss. Compared with other mechanical equipment, the efficiency will be higher. With the marketization of hydrogen fuel cells, many fuel cell applications, including fuel ce...
Claims
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Login to View More IPC IPC(8): H01M8/04298H01M8/0438H01M8/04664H01M8/04955
CPCH01M8/04305H01M8/04388H01M8/04664H01M8/04955Y02E60/50
Inventor 李昌泉郝义国李正辉
Owner WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD