Load Leveling of Fuel Cell System by Oxygen Concentration Control of Cathode Gas

2006 ◽  
Vol 4 (3) ◽  
pp. 238-247
Author(s):  
Shin’ya Obara
Keyword(s):  
Fuel Cell ◽  
Oxygen Concentration ◽  
High Efficiency ◽  
Water Electrolysis ◽  
Cell System ◽  
Solid Polymer ◽  
Power Load ◽  
Load Leveling ◽  
Membrane Type ◽  
Electric Power Load

The capacity reduction of a solid-polymer-membrane-type fuel cell (PEFC) with a reformer by load leveling and by improving the efficiency of part-load operation of the reformer is considered. The power generation efficiency of a fuel cell improves by supplying gas with a high oxygen concentration to the cathode. During periods of low electricity demand, the fuel cell is operated using reformed gas and air, and water electrolysis operation is also performed. When the electric power load is large, gases stored in cylinders are supplied to the fuel cell for operation. Using the proposed method, high efficiency operation and a reduction in the fuel cell capacity are possible.

Modeling and Simulation for PEMFC/Solar Panel Hybrid Vehicle With Solar Water Electrolysis System

2005 ◽  
Author(s):  
Hyunjin Jee ◽  
Joongmyeon Bae
Keyword(s):  
Fuel Cell ◽  
Modeling And Simulation ◽  
High Efficiency ◽  
Water Electrolysis ◽  
Hybrid Vehicle ◽  
Cell System ◽  
Solar Panel ◽  
Solar Water ◽  
Response Data ◽  
Electrolysis System

This Paper focuses on modeling and simulation to analyze the characteristic of PEMFC/solar panel hybrid vehicle and to evaluate algorithms for producing hydrogen by using PEMFC and solar panel. The system includes solar panel, water electrolysis, vehicle property, induction motor etc., and the fuel cell system is modeled with fuel cell irreversibility and dynamic response data obtained by the BCS Fuel Cell Inc.’s FC stack. In our model solar panel is used in parallel when a vehicle is driven to lower the electrical load of fuel cell stack. The solar panel is also modeled to be used to provide electricity to electrolysis system for hydrogen production. Matlab/Simulink package was used to evaluate and simulate the usefulness of the system in detail. According to the obtained simulation results, the extra power obtained from solar panel which has been explored in natural conditions of the Daejeon city, where the maximum value of solar radiation density in summer is equal to 900W/m2, can help to produce hydrogen and obtain the high efficiency of PEMFC according to dynamic load change in city drive mode. But the vehicle consumes more hydrogen than production, so hydrogen tank is required and solar water electrolysis system can make the tank smaller. It has to be noticed that this work is not focused on the efficiency and drive performance but on the explanation of algorithm and evaluation of hybrid vehicle’s usefulness.

Dynamic Characteristics of a Fuel Cell System and Microgrid

2014 ◽  
pp. 38-71
Keyword(s):  
Fuel Cell ◽  
Electric Power ◽  
Dynamic Characteristics ◽  
Cell System ◽  
Solid Polymer ◽  
Fuel Cell System ◽  
Generation Efficiency ◽  
Response Characteristics ◽  
Electric Power Load ◽  
System Controller

This chapter consists of two sections, ‘Load Response Characteristics of a Fuel Cell Microgrid with Control of Number of Units’ and ‘Dynamic Characteristics of a PEFC System for Individual Houses’. The dynamic characteristics and generation efficiency of a microgrid structured from 17 houses are examined in the 1st section. The characteristics of the power quality of a fuel cell microgrid, and the generation efficiency of the fuel cell are examined by numerical analysis. In the 2nd chapter, the method of determination of the control variables for a system controller, which controls the electric power output of a solid-polymer-membrane fuel cell system (PEFC) during electric power load fluctuations, is considered.

Control Strategy Optimization of a Fuel-Cell Electric Vehicle

2008 ◽  
Vol 5 (2) ◽  
Author(s):  
Vanessa Paladini ◽  
Teresa Donateo ◽  
Arturo de Risi ◽  
Domenico Laforgia
Keyword(s):  
Fuel Cell ◽  
Control Strategy ◽  
Cell Model ◽  
Control Strategies ◽  
Storage System ◽  
Model Development ◽  
Cell System ◽  
Polymer Electrolyte Fuel Cell ◽  
Solid Polymer ◽  
Maximum Efficiency

In the last decades, due to emission reduction policies, research focused on alternative powertrains among which electric vehicles powered by fuel cells are becoming an attractive solution. The main issues of these vehicles are the energy management system and the overall fuel economy. An overview of the existing solutions with respect to their overall efficiency is reported in the paper. On the bases of the literature results, the more efficient powertrain scheme has been selected. The present investigation aims at identifying the best control strategy to power a vehicle with both fuel cell and battery to reduce fuel consumption. The optimization of the control strategy is achieved by using a genetic algorithm. To model the powertrain behavior, an on purpose made simulation program has been developed and implemented in MATLAB/SIMULINK. In particular, the fuel cell model is based on the theory of Amphlett et al. (1995, “Performance Modeling of the Ballard Mark IV Solid Polymer Electrolyte Fuel Cell. II. Empirical Model Development,” J. Electrochem. Soc., 142(1)) whereas the battery model also accounts for the charge/discharge efficiency. The analyzed powertrain is equipped with an energy recovery system. During acceleration, power is demanded to the storage system, while during deceleration the battery is recharged. All the tested control strategies assume charge sustaining operation for the battery and that the fuel cell system has to work around its maximum efficiency. All the tested strategies have been validated on four driving cycles.

High Efficiency Operation Conditions in Polymer Electrolyte Fuel Cell System with Hydrogen Circulation

2020 ◽  
Vol MA2020-02 (34) ◽  
pp. 2211-2211
Author(s):  
Yulei Ma ◽  
Kazuhiro Yamaguchi ◽  
Miho Kageyama ◽  
Motoaki Kawase
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
High Efficiency ◽  
Cell System ◽  
Polymer Electrolyte Fuel Cell ◽  
Fuel Cell System ◽  
Operation Conditions

Status of solid polymer fuel cell system development

1994 ◽  
Vol 49 (1-3) ◽  
pp. 129-142 ◽  
Author(s):  
J.P. Shoesmith ◽  
R.D. Collins ◽  
M.J. Oakley ◽  
D.K. Stevenson
Keyword(s):  
Fuel Cell ◽  
System Development ◽  
Cell System ◽  
Solid Polymer ◽  
Fuel Cell System

scholarly journals Ultrasonic Irradiating Effect on Lithium Ion Secondary Battery, Polymer Electrolyte Fuel Cell and Solid Polymer Water Electrolysis

1999 ◽  
Vol 119 (5) ◽  
pp. 635-636
Author(s):  
Shunji Kakutani ◽  
Michihiro Matsumoto ◽  
Takeshi Hikosaka ◽  
Toshimitsu Tomiie ◽  
Kohei Ito ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Lithium Ion ◽  
Water Electrolysis ◽  
Polymer Electrolyte Fuel Cell ◽  
Solid Polymer ◽  
Secondary Battery

scholarly journals Research on the Current Situation and Development of Fuel Cell Powered Transportation

2021 ◽  
Vol 242 ◽  
pp. 02007
Author(s):  
Hao Su
Keyword(s):  
Fuel Cell ◽  
Large Scale ◽  
High Efficiency ◽  
Cell System ◽  
Low Noise ◽  
Maritime Industry ◽  
Fuel Cell System ◽  
Emission Level ◽  
New Type ◽  
Near Future

Traditional oil consumed transportation including vehicles and vessel produces green house gases, which is not environmentally-friendly. As a new type of energy-consumed unit, the fuel cell is popular due to its less emission level, high efficiency and low noise. This paper introduces the principle and characteristics of fuel cell, with further introduction to the application status of fuel cell system in the vehicle and maritime industry. Further aspects that need to be improved will be discussed and analyzed, in order to promote fuel cell system in transportation area in a large scale. It can be clearly seen that various factors (infrastructure, cost, durability, etc.) should be considered in the near future.

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