By Jay T. Pukrushpan PhD, Anna G. Stefanopoulou PhD, Huei Peng PhD (auth.)

ISBN-10: 1447137922

ISBN-13: 9781447137924

ISBN-10: 1849969280

ISBN-13: 9781849969284

The challenge of greenhouse fuel (particularly carbon dioxide) unencumber in the course of energy new release in fastened and cellular platforms is greatly stated. gasoline cells are electrochemical units providing fresh and effective power creation via the direct conversion of gaseous gasoline into electrical energy. As such, they're below lively research for advertisement desk bound strength iteration, residential functions and in transportation. The regulate of gas telephone structures less than quite a few environmental stipulations and over a large working variety is an important think about making them manageable for wide use in every-day know-how.

In Control of gas phone energy Systems the applying of gasoline cells in automobile powertrains is emphasised as a result of the value of the contribution to international CO2 emissions made via flooring motor vehicle propulsion and due to the problem offered by means of the accompanying regulate difficulties. The authors’ complete control-oriented process presents:

• an outline of the underlying actual rules and the most regulate ambitions and problems linked to the implementation of gasoline telephone platforms.

• System-level dynamic types derived from the actual ideas of the methods concerned.

• formula, in-depth research and special keep an eye on layout for 2 serious regulate difficulties, specifically, the keep watch over of the cathode oxygen provide for a high-pressure direct hydrogen gasoline mobile approach and regulate of the anode hydrogen offer from a ordinary gasoline gasoline processor method.

• Multivariable controllers that attenuate restraints caused by loss of sensor constancy or actuator authority.

• Real-time observers for stack variables that confer redundancy in fault detection tactics.

• Examples of the help of keep watch over research in gasoline cellphone redecorate and function development.

• Downloadable SIMULINK® version of a gasoline mobile for fast use supplemented through pattern MATLAB® documents with which to run it and reproduce a number of the ebook plots.

Primarily meant for researchers and scholars with a regulate heritage trying to extend their wisdom of gas mobile expertise, Control of gasoline cellphone energy Systems also will attract training gas phone engineers throughout the simplicity of its versions and the applying of regulate algorithms in concrete case reviews. The thorough insurance of regulate layout might be of gain to scientists facing the electrochemical, fabrics and fluid-dynamic elements of gasoline cells.

Advances in commercial Control goals to record and inspire the move of expertise up to speed engineering. The swift improvement of keep watch over know-how has an influence on all components of the keep watch over self-discipline. The sequence deals a chance for researchers to offer a longer exposition of recent paintings in all elements of business control.

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Extra info for Control of Fuel Cell Power Systems: Principles, Modeling, Analysis and Feedback Design

Example text

2. 1 Stack Voltage Model In this section, the modeling of the fuel cell voltage is discussed. The voltage is calculated as a function of stack current, cathode pressure, reactant partial pressures, fuel cell temperature, and membrane humidity using a combination of physical and empirical relationships. The open circuit voltage of the fuel cell is calculated from the energy balance between chemical energy in the reactants and electrical energy. Three main types of losses in the fuel cell are explained.

The voltage model contains an equation to calculate stack voltage based on fuel cell pressure, temperature, reactant gas partial pressures, and membrane humidity. ------Psm W 1 ! Yoca,in: 1st ------------------------------~ Ist : ca,;, : ~Pcain l ---------------r -'~----------------- : :Wcaout ! , 1st 4'anin! Anode Mass Flow Pan,in : Tanin ! Fig. 1. Fuel cell stack block diagram 31 J. T. , Control of Fuel Cell Power Systems © Springer-Verlag London 2004 32 3 Fuel Cell System Model: Fuel Cell Stack RC system is also explained but is not included in the model.

P1 (atm) Fig. 2. 7. Comparison of nozzle flow rate from nonlinear and linear nozzle equations Nozzle -·---------------------------.! Fig. 8. 2 Return Manifold The temperature of the air leaving the stack is relatively low. 2 Lumped Model of the Manifold Dynamics 25 where Vrm is the return manifold volume and Trm is the temperature of the gas in the return manifold. 19). 17). The outlet mass flow is a function of the manifold pressure Prm and the pressure downstream from the manifold, which is assumed to be fixed at Patm· Because the pressure drop between the return manifold and the atmospheric is relatively large, the equations of the return manifold exit flow are and W rm,out = Cv,rmAT,rmPrm !

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Control of Fuel Cell Power Systems: Principles, Modeling, Analysis and Feedback Design by Jay T. Pukrushpan PhD, Anna G. Stefanopoulou PhD, Huei Peng PhD (auth.)


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