Analysis of Optimal Oxygen Excess Ratio and Nonlinear Tracking Control of Vehicle PEMFC Air Supply System

To a large extent, the efficiency and durability of the proton exchange membrane fuel cell (PEMFC) depend on the effective control of air supply system. However, dynamic load scenarios, internal and external disturbances, and the characteristics of strong nonlinearity make the control of complex air...

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Autores principales:	Xianzhi Tang, Jilong Lin, Kun Zhao, Longfei Shi, Bo Wang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040 Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/8e5b31140ab6419b9c040c9130a290d6
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spelling	oai:doaj.org-article:8e5b31140ab6419b9c040c9130a290d62021-11-22T01:10:45ZAnalysis of Optimal Oxygen Excess Ratio and Nonlinear Tracking Control of Vehicle PEMFC Air Supply System1563-514710.1155/2021/4914816https://doaj.org/article/8e5b31140ab6419b9c040c9130a290d62021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/4914816https://doaj.org/toc/1563-5147To a large extent, the efficiency and durability of the proton exchange membrane fuel cell (PEMFC) depend on the effective control of air supply system. However, dynamic load scenarios, internal and external disturbances, and the characteristics of strong nonlinearity make the control of complex air supply systems challenging. This paper mainly studies the modeling of PEMFC air supply system and the design of a nonlinear controller for oxygen excess ratio tracking control. First, we analyze and calibrate the system’s optimal oxygen excess ratio control target and explore how the system temperature and humidity impact it, respectively; second, a second-order affine oriented control model which can represent the static and dynamic characteristics of the air supply system is derived, and a disturbance observer is designed to estimate and compensate the “lumped error” online. Then, aiming at the problem of unmeasurable cathode pressure, a state observer based on Kalman optimal estimation algorithm is proposed to realize the real-time estimation of cathode pressure; finally, a dynamic output feedback control system based on observer and backstepping nonlinear controller is proposed, and the comparison and evaluation of two control strategies based on constant oxygen excess ratio tracking and optimal oxygen excess ratio tracking are carried out. The simulation results show the effectiveness and superiority of the designed control system compared with the reference controller.Xianzhi TangJilong LinKun ZhaoLongfei ShiBo WangHindawi LimitedarticleEngineering (General). Civil engineering (General)TA1-2040MathematicsQA1-939ENMathematical Problems in Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Engineering (General). Civil engineering (General) TA1-2040 Mathematics QA1-939
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Mathematics QA1-939 Xianzhi Tang Jilong Lin Kun Zhao Longfei Shi Bo Wang Analysis of Optimal Oxygen Excess Ratio and Nonlinear Tracking Control of Vehicle PEMFC Air Supply System
description	To a large extent, the efficiency and durability of the proton exchange membrane fuel cell (PEMFC) depend on the effective control of air supply system. However, dynamic load scenarios, internal and external disturbances, and the characteristics of strong nonlinearity make the control of complex air supply systems challenging. This paper mainly studies the modeling of PEMFC air supply system and the design of a nonlinear controller for oxygen excess ratio tracking control. First, we analyze and calibrate the system’s optimal oxygen excess ratio control target and explore how the system temperature and humidity impact it, respectively; second, a second-order affine oriented control model which can represent the static and dynamic characteristics of the air supply system is derived, and a disturbance observer is designed to estimate and compensate the “lumped error” online. Then, aiming at the problem of unmeasurable cathode pressure, a state observer based on Kalman optimal estimation algorithm is proposed to realize the real-time estimation of cathode pressure; finally, a dynamic output feedback control system based on observer and backstepping nonlinear controller is proposed, and the comparison and evaluation of two control strategies based on constant oxygen excess ratio tracking and optimal oxygen excess ratio tracking are carried out. The simulation results show the effectiveness and superiority of the designed control system compared with the reference controller.
format	article
author	Xianzhi Tang Jilong Lin Kun Zhao Longfei Shi Bo Wang
author_facet	Xianzhi Tang Jilong Lin Kun Zhao Longfei Shi Bo Wang
author_sort	Xianzhi Tang
title	Analysis of Optimal Oxygen Excess Ratio and Nonlinear Tracking Control of Vehicle PEMFC Air Supply System
title_short	Analysis of Optimal Oxygen Excess Ratio and Nonlinear Tracking Control of Vehicle PEMFC Air Supply System
title_full	Analysis of Optimal Oxygen Excess Ratio and Nonlinear Tracking Control of Vehicle PEMFC Air Supply System
title_fullStr	Analysis of Optimal Oxygen Excess Ratio and Nonlinear Tracking Control of Vehicle PEMFC Air Supply System
title_full_unstemmed	Analysis of Optimal Oxygen Excess Ratio and Nonlinear Tracking Control of Vehicle PEMFC Air Supply System
title_sort	analysis of optimal oxygen excess ratio and nonlinear tracking control of vehicle pemfc air supply system
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/8e5b31140ab6419b9c040c9130a290d6
work_keys_str_mv	AT xianzhitang analysisofoptimaloxygenexcessratioandnonlineartrackingcontrolofvehiclepemfcairsupplysystem AT jilonglin analysisofoptimaloxygenexcessratioandnonlineartrackingcontrolofvehiclepemfcairsupplysystem AT kunzhao analysisofoptimaloxygenexcessratioandnonlineartrackingcontrolofvehiclepemfcairsupplysystem AT longfeishi analysisofoptimaloxygenexcessratioandnonlineartrackingcontrolofvehiclepemfcairsupplysystem AT bowang analysisofoptimaloxygenexcessratioandnonlineartrackingcontrolofvehiclepemfcairsupplysystem
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Analysis of Optimal Oxygen Excess Ratio and Nonlinear Tracking Control of Vehicle PEMFC Air Supply System

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