Coordinating IMC-PID and adaptive SMC controllers for a PEMFC |
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Authors: | Guo-Liang Wang Yong Wang Hui-He Shao |
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Affiliation: | a Department of Automation, Shanghai Jiao Tong University, Shanghai 200240, China b Research Center of Information and Control, Dalian University of Technology, Dalian 116023, China c Fuel Cell Institute, Shanghai Jiao Tong University, Shanghai 200030, China |
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Abstract: | For a Proton Exchange Membrane Fuel Cell (PEMFC) power plant with a methanol reformer, the process parameters and power output are considered simultaneously to avoid violation of the constraints and to keep the fuel cell power plant safe and effective. In this paper, a novel coordinating scheme is proposed by combining an Internal Model Control (IMC) based PID Control and adaptive Sliding Mode Control (SMC). The IMC-PID controller is designed for the reformer of the fuel flow rate according to the expected first-order dynamic properties. The adaptive SMC controller of the fuel cell current has been designed using the constant plus proportional rate reaching law. The parameters of the SMC controller are adaptively tuned according to the response of the fuel flow rate control system. When the power output controller feeds back the current references to these two controllers, the coordinating controllers system works in a system-wide way. The simulation results of the PEMFC power plant demonstrate the effectiveness of the proposed method. |
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Keywords: | PEMFC Coordinating control Fuel utilization Adaptive SMC IMC-PID |
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