Nonlinear Model Predictive Control for the Starting Process of a Free-Piston Linear Generator
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Date
2018-09
Publication Type
Conference Paper
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yes
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Abstract
Free-piston linear generators (FPLG) attract a lot of attention and are under ongoing investigation due to their fuel efficiency, low emissions and the compact design as generator unit. The main characteristic of FPLGs is the absence of a crankshaft, which poses a major challenge, because the piston moves freely. Hence, the locations of top dead center (TDC) and bottom dead center (BDC), have to be controlled precisely. In this contribution, an approach for modeling and control of a FPLG is presented. The combustion cylinder and the bouncing chamber on the opposite side are described with a physics-based, continuous-time thermodynamic model. For the starting process of the FPLG a nonlinear model predictive controller (NMPC) with multiple shooting discretization is designed for a safe and reliable starting process.
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Publication status
published
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Book title
5th IFAC Conference on Engine and Powertrain Control, Simulation and Modeling, E-COSM 2018. Proceedings
Journal / series
Volume
51 (31)
Pages / Article No.
632 - 639
Publisher
Elsevier
Event
5th IFAC Conference on Engine and Powertrain Control, Simulation and Modeling (E-COSM 2018)
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Methods
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Subject
Free-Piston Linear Generator; Engine Modeling; Nonlinear Model Predictive Control; Multiple Shooting
Organisational unit
03286 - Guzzella, Lino (emeritus) / Guzzella, Lino (emeritus)