Temperature Control for a Proton-Exchange Membrane Fuel Cell System with Unknown Dynamic Compensations
Numerous control strategies of temperature regulation have been carried out for proton-exchange membrane fuel cell systems including a cooling fan in order to ensure operation at the desired condition and extend the lifetime of the fuel cell stack. However, most existing control strategies are devel...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Complexity |
| Online Access: | http://dx.doi.org/10.1155/2020/8822835 |
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| author | Yashan Xing Ramon Costa-Castelló Jing Na |
| author_facet | Yashan Xing Ramon Costa-Castelló Jing Na |
| author_sort | Yashan Xing |
| collection | DOAJ |
| description | Numerous control strategies of temperature regulation have been carried out for proton-exchange membrane fuel cell systems including a cooling fan in order to ensure operation at the desired condition and extend the lifetime of the fuel cell stack. However, most existing control strategies are developed without considering the efficiency limitation of the cooling system such that the cooling fan may be unable to eliminate the additional heat. Moreover, there are unknown modelling errors, external disturbance and noise during modelling and experiment processes for fuel cells. Due to those unknown dynamics, the conventional control strategies may fail to achieve the expectant results. To address this issue, an alternative control strategy is proposed in this paper, which consists of a composite proportional-integral (PI) controller with an unknown system dynamics estimator. First, the control strategy is developed by reducing the temperature of input air through the humidifier and simultaneously increasing the mass flow of air in order to eliminate the excess heat that a cooling fan cannot remove. Moreover, an unknown system dynamics estimator is proposed in order to compensate the effect of the unknown dynamics. The construction of the estimator is designed through finding an invariant manifold which implies the relation between known variables and the unknown manifold. The invariant manifold is derived by applying a simple low-pass filter to the system which is beneficial to avoid the requirement of the unmeasurable state derivative. Furthermore, the proposed estimator is easily merged into the proposed PI control strategy and ensures the exponential convergence of estimated errors. Besides, the estimator is further modified such that the derivative of the desired temperature is not required in the controller. Finally, numerical simulations of the PEMFC system are provided and the results illustrate the efficacy of the proposed control strategy. |
| format | Article |
| id | doaj-art-63273b7342144a86aa084e075e86b694 |
| institution | Kabale University |
| issn | 1076-2787 1099-0526 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Complexity |
| spelling | doaj-art-63273b7342144a86aa084e075e86b6942025-08-20T03:34:30ZengWileyComplexity1076-27871099-05262020-01-01202010.1155/2020/88228358822835Temperature Control for a Proton-Exchange Membrane Fuel Cell System with Unknown Dynamic CompensationsYashan Xing0Ramon Costa-Castelló1Jing Na2Institut de Robòtica i Informàtica Industrial, CSIC-UPC. C/ Llorens i Artigas 4-6, Barcelona 08028, SpainInstitut de Robòtica i Informàtica Industrial, CSIC-UPC. C/ Llorens i Artigas 4-6, Barcelona 08028, SpainFaculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaNumerous control strategies of temperature regulation have been carried out for proton-exchange membrane fuel cell systems including a cooling fan in order to ensure operation at the desired condition and extend the lifetime of the fuel cell stack. However, most existing control strategies are developed without considering the efficiency limitation of the cooling system such that the cooling fan may be unable to eliminate the additional heat. Moreover, there are unknown modelling errors, external disturbance and noise during modelling and experiment processes for fuel cells. Due to those unknown dynamics, the conventional control strategies may fail to achieve the expectant results. To address this issue, an alternative control strategy is proposed in this paper, which consists of a composite proportional-integral (PI) controller with an unknown system dynamics estimator. First, the control strategy is developed by reducing the temperature of input air through the humidifier and simultaneously increasing the mass flow of air in order to eliminate the excess heat that a cooling fan cannot remove. Moreover, an unknown system dynamics estimator is proposed in order to compensate the effect of the unknown dynamics. The construction of the estimator is designed through finding an invariant manifold which implies the relation between known variables and the unknown manifold. The invariant manifold is derived by applying a simple low-pass filter to the system which is beneficial to avoid the requirement of the unmeasurable state derivative. Furthermore, the proposed estimator is easily merged into the proposed PI control strategy and ensures the exponential convergence of estimated errors. Besides, the estimator is further modified such that the derivative of the desired temperature is not required in the controller. Finally, numerical simulations of the PEMFC system are provided and the results illustrate the efficacy of the proposed control strategy.http://dx.doi.org/10.1155/2020/8822835 |
| spellingShingle | Yashan Xing Ramon Costa-Castelló Jing Na Temperature Control for a Proton-Exchange Membrane Fuel Cell System with Unknown Dynamic Compensations Complexity |
| title | Temperature Control for a Proton-Exchange Membrane Fuel Cell System with Unknown Dynamic Compensations |
| title_full | Temperature Control for a Proton-Exchange Membrane Fuel Cell System with Unknown Dynamic Compensations |
| title_fullStr | Temperature Control for a Proton-Exchange Membrane Fuel Cell System with Unknown Dynamic Compensations |
| title_full_unstemmed | Temperature Control for a Proton-Exchange Membrane Fuel Cell System with Unknown Dynamic Compensations |
| title_short | Temperature Control for a Proton-Exchange Membrane Fuel Cell System with Unknown Dynamic Compensations |
| title_sort | temperature control for a proton exchange membrane fuel cell system with unknown dynamic compensations |
| url | http://dx.doi.org/10.1155/2020/8822835 |
| work_keys_str_mv | AT yashanxing temperaturecontrolforaprotonexchangemembranefuelcellsystemwithunknowndynamiccompensations AT ramoncostacastello temperaturecontrolforaprotonexchangemembranefuelcellsystemwithunknowndynamiccompensations AT jingna temperaturecontrolforaprotonexchangemembranefuelcellsystemwithunknowndynamiccompensations |