Abstract
Proton exchange membrane fuel cells have been causing attention because of theirs many advantages. In order to maintain good working condition good controller is required. In this study, the mathematical model for proton exchange membrane fuel cell is developed. Then combining the characteristics of fuzzy control and sliding mode control fuzzy sliding mode controller is designed. The controller can realize constant power output and improve stability by fuzzy reasoning to control the amount of output variation that effectively reduces chattering. Simulation results show that the proposed controllers can obtain better control effect compared with fuzzy controller.
Highlights
Fuel cell is a device capable of converting chemical energy from a fuel into electrical energy through a chemical reaction with oxygen or another oxidizing agent
The complex and nonlinear dynamics of Proton Exchange Membrane Fuel Cell (PEMFC) make it hard to maintaining a fuel cell system in correct operating conditions when subjected to fast load changes (Kaytakoglu and Akyalm, 2007)
The mathematical model for a typical proton exchange membrane fuel cell is described in this study and a fuzzy sliding mode controller for PEMFC is designed to maintain a constant power of PEMFC under load disturbance
Summary
Fuel cell is a device capable of converting chemical energy from a fuel into electrical energy through a chemical reaction with oxygen or another oxidizing agent. One of the significant challenges in control algorithms is that many parameters such as operating temperatures, pressure and flow rates of fuel and oxidant gases and so on affect the performance of PEMFC (Riascos and Pereira, 2010) Many research studies such as many linear controllers have been carried out on proton exchange membrane fuel cell technology. The mathematical model for a typical proton exchange membrane fuel cell is described in this study and a fuzzy sliding mode controller for PEMFC is designed to maintain a constant power of PEMFC under load disturbance. In PEM fuel cell the following chemical reaction exists: Corresponding Author: Minxiu Yan College of Information, Shenyang University of Chemical Technology, Shenyang 110142, China In this electrochemical process hydrogen molecules are carried by flow plate channels on the anode side. Vohmic is the ohmic voltage drop results from the conduction of protons through the solid electrolyte and electrons through the internal electronic resistance:
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