Lukás Ferkl

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Predictive control in buildings has undergone an intensive research in the past years. Model identification plays a central role in a predictive control approach. This paper presents a comprehensive study of modeling of a large multi-zone office building. Many of the common methods used for modeling of the buildings, such as a detailed modeling of the(More)
Finding a suitable dynamic, linear, time-invariant model is a major obstacle for the use of model-predictive control of buildings. While finding models based on physical properties of the system is time consuming, statistical models need the system to be excited, which is not always possible. This paper presents possibilities for finding a suitable model(More)
The circulation system of the heating water can be used for distribution of heat throughout a building even without an active heat supply - the water may absorb the heat in the rooms exposed to the solar heat and deliver it to the rooms in shade. In Central Europe, this is particularly useful when the outdoor temperatures are close to the required inside(More)
Low energy buildings have been attracting much attention lately. Most of the research is focused on the building construction or alternative energy sources. Recently, there has been an intense research in the area of Model Predictive Control (MPC) for buildings. The main principle of such a controller is a trade-off between energy savings and user welfare(More)
Model Predictive Control (MPC) is a promising control method to reduce the energy use of buildings. Its commercialization is, however, hampered by the difficulty of obtaining a reliable controller model. This paper compares two approaches to obtain such controller model: (1) a white-box model approach for which a detailed first-principles building model is(More)
The implicit model predictive control based on models identified by subspace identification methods was implemented and tested on a large university building. The control was improved by incorporating the weather prediction into the model. The performance of said controller was estimated in an experiment, wherein two almost identical building blocks were(More)
In order to provide decision-making mechanism for application of model-based control of heating systems in buildings, a method has been proposed that assumes the energy balance calculation as the performance bound for the model-based controller. If the performance bound is significantly lower than the actual energy consumption, a more accurate estimate is(More)