Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11790/1425
Title: A novel linear predictive control approach for auxiliary energy supply to a solar thermal combistorage
Authors: Pichler, Martin Felix 
Lerch, Werner 
Heinz, Andreas 
Görtler, Gregor 
Schranzhofer, Hermann 
Rieberer, René 
Keywords: Solar thermal;Auxiliary energy supply;Model predictive control;Weather forecast
Issue Date: 2014
Publisher: Elsevier
Source: In: Solar Energy, 101, 203-219
Journal: Solar Energy 
Abstract: This paper presents and investigates a novel, hybrid model predictive approach to control the auxiliary heating for a combistorage. Faulty design, as well as suitable design schemes cause situations in which solar energy supply has to “compete against” the auxiliary energy supply. This research demonstrates a feasible method to remedy such situations with the utilization of weather forecast data. The developed approach is modular and expandable to be used with additional heat sources. A suitable disturbance-prediction, which approximates the expected solar energy flux into the storage, in connection with a linear model predictive control (MPC), can prevent the auxiliary system to switch on at an early stage and thus reduce the auxiliary energy demand and keep storage capacity for solar thermal energy supply. Results obtained through simulations for selected months show a reduction of auxiliary energy demand up to 40%, when facilitating this approach for a solar thermal combisystem for a single family house. Monthly solar fractions (Fs) increase by approximately 4% points or 5% with respect to the base case.
URI: http://hdl.handle.net/20.500.11790/1425
ISSN: 0038-092X
DOI: 10.1016/j.solener.2013.12.015
Rights: info:eu-repo/semantics/closedAccess
Appears in Collections:Energie-Umweltmanagement

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