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Communication Dans Un Congrès Année : 2012

Towards model-based control of a steam Rankine process for engine waste heat recovery

Johan Peralez
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Paolino Tona
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Antonio Sciarretta
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Résumé

Control plays a critical role in enabling good performance of Rankine processes for waste heat recovery from prime movers. Despite that, literature on control design for those systems is scarce, and there is a real need for investigating approaches that can be effective in an industrial context, where rapid control prototyping must be followed by a viable calibration procedure. The paper describes modeling and control of a pilot Rankine steam process for exhaust gas heat recovery from a spark-ignition engine, focusing in particular on the use of a reduced-order dynamic model of the system to compute a nonlinear feedforward action to better control the system during nominal operation. Model reduction is obtained at the heat-exchanger level. First, via the moving-boundary approach, which avoids the need for complex, finite-volume, models. Then, via a further reduction of the resulting evaporator model which captures its dominant dynamics. The proposed control system is validated on a detailed reference simulator using a demanding driving cycle.

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Automatique
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Dates et versions

hal-00875423 , version 1 (22-10-2013)

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Johan Peralez, Paolino Tona, Antonio Sciarretta, Pascal Dufour, Madiha Nadri. Towards model-based control of a steam Rankine process for engine waste heat recovery. 2012 IEEE Vehicle Power and Propulsion Conference (VPPC), Oct 2012, South Korea. pp.289 - 294, ⟨10.1109/VPPC.2012.6422718⟩. ⟨hal-00875423⟩
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