Control of a Ground Source Heat Pump using Hybrid Model Predictive Control
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Reglering av en bergvärmepump med hjälp av hybrid modellprediktiv reglering (Swedish)
The thesis has been conducted at Bosch Thermoteknik AB and its aim is to develop a Model Predictive Control (MPC) controller for a ground source heat pump which minimizes the power consumption while being able to keep the inside air temperature and Domestic Hot Water (DHW) temperature within certain comfortintervals.
First a model of the system is derived, since the system consists of both continuous and binary states a hybrid model is used. The MPC controller utilizes the model to predict the future states of the system, and by formulating an optimizationproblem an optimal control is achieved.
The MPC controller is evaluated and compared to a conventional controller using simulations. After some tuning the MPC controller is capable of maintaining the inside air and DHW temperature at their reference levels without oscillating too much. The MPC controller’s general performance is quite similar to the conventional controller, but with a power consumption which is 1-3 % lower. A simulation using an inside air temperature reference which is lowered during the night is also conducted, it achieved a power consumption which was 7.5 % lower compared to a conventional controller.
Place, publisher, year, edition, pages
2011. , 49 p.
Model Predictive Control, MPC, Hybrid MOdel Predictive Control, Hybrid MPC, Hybrid Systems, Modelling, Modeling, Heat Pump
IdentifiersURN: urn:nbn:se:liu:diva-71369ISRN: LiTH-ISY-EX--11/4514--SEOAI: oai:DiVA.org:liu-71369DiVA: diva2:450869
Subject / course
Khoshfetrat Pakazad, SinaFredin, Jim