Modelling and fuel flow dynamic control of proton exchange membrane fuel cell

The article is devoted to the problem of proton-exchange membrane fuel cells (PEMFCs) integration into power supply systems. A hybrid energy complex (HEC) based on PEMFCs and lithium iron phosphate batteries can be used as a reliable energy source. It is necessary to properly determine the PEMFC characteristics in order to develop a PEMFC-based HEC prototype and its control algorithms. This paper presents a 1 kW PEMFC’s test results in steady and dynamic modes. The dependences of the average hydrogen consumption per 1 min, the volume of hydrogen for the generation of 1 kWh, the PEMFC efficiency on the load current were obtained and an analysis of these dependences for steady operation modes was performed. A range of load changes beyond which the efficiency of the PEMFC significantly decreased and it was recommended to switch to the joint operation of the PEMFCs and batteries (or only batteries) was established. Diagrams of the PEMFC output voltage during the dynamic changes in loads are presented and an analysis of transient response characteristics was carried out. The air supply fans were found to affect the performance of PEMFCs.

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“…U PEMFC values at p = 0.8 atm slightly exceed the U PEMFC values at p = 0.6 atm. This corresponds to the regularities obtained in [14,15,18].…”

supporting

confidence: 78%

“…The simulation of fuel cells' operation with a change in hydrogen and oxygen supply is presented in [14,15]. M.S.…”

mentioning

confidence: 99%

Investigation of PEM Fuel Cell Characteristics in Steady and Dynamic Operation Modes

et al. 2022

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“…Equation (24) should be understood as follows: the time domain signal −k b ω c ser + V c ser is fed to the input of the low pass filter with a transfer function 1 L ind s+R ar . The output of the filter gives i c ser , which can be used in Equation (20).…”

Section: Hfc and Uc Current Command Generatormentioning

confidence: 99%

Hydrogen Fuel Cell and Ultracapacitor Based Electric Power System Sliding Mode Control: Electric Vehicle Application

2020

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Control of a perturbed electric power system comprised of a hydrogen fuel cell (HFC), boost and boost/buck DC–DC power converters, and the ultra-capacitor (UC) is considered within an electric vehicle application. A relative degree approach was applied to control the servomotor speed, which is the main controllable load of the electric car. This control is achieved in the presence of the torque disturbances via directly controlling the armature voltage. The direct voltage control was accomplished by controlling the HFC voltage and the UC current in the presence of the model uncertainties. Controlling the HFC and UC current based on the power balance approach eliminated the non-minimum phase property of the DC–DC boost converter. Conventional first order sliding mode controllers (1-SMC) were employed to control the output voltage of the DC–DC boost power converter and the load current of the UC. The current in HFC and the servomotor speed were controlled by the adaptive-gain second order SMC (2-ASMC). The efficiency and robustness of the HFC/UC-based electric power systems controlled by 1-SMC and 2-ASMC were confirmed on a case study of electric car speed control via computer simulations.

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“…The mathematical model of the PEMFC that takes into account the partial pressure of oxygen and hydrogen dynamics is well-studied in literature (see, for instance, [1], [2], [8], [14], [24] and [25]) and is presented below.…”

Section: A Mathematical Model Of Pemfcmentioning

confidence: 99%

“…2, the dynamics of activation over voltage ( act V ) is given as, The partial pressure of hydrogen and oxygen dynamics are presented as [24], [25]   …”

Section: A Mathematical Model Of Pemfcmentioning

confidence: 99%

Control of fuel cell-based electric power system using adaptive sliding mode control and observation techniques

Ashok

Shtessel

2015

Journal of the Franklin Institute

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Modelling and fuel flow dynamic control of proton exchange membrane fuel cell

Cited by 12 publications

References 10 publications

Investigation of PEM Fuel Cell Characteristics in Steady and Dynamic Operation Modes

Investigation of PEM Fuel Cell Characteristics in Steady and Dynamic Operation Modes

Hydrogen Fuel Cell and Ultracapacitor Based Electric Power System Sliding Mode Control: Electric Vehicle Application

Control of fuel cell-based electric power system using adaptive sliding mode control and observation techniques

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