Scenario-based nonlinear model predictive control for building heating systems

Scenario-based nonlinear model predictive control for building heating systems

Pippia, T.M. (TU Delft Team Tamas Keviczky)
Lago, Jesus (TU Delft Team Bart De Schutter; VITO-Energyville)
De Coninck, Roel (DeltaQ)
De Schutter, B.H.K. (TU Delft Team Bart De Schutter)

2021

State-of-the-art Model Predictive Control (MPC) applications for building heating adopt either a deterministic controller together with a nonlinear model or a linearized model with a stochastic MPC controller. However, deterministic MPC only considers one single realization of the disturbances and its performance strongly depends on the quality of the forecast of the disturbances, which can lead to low performance. In fact, inadequate building energy management can lead to high energy costs and CO₂ emissions. On the other hand, a linearized model can fail to capture some dynamics and behavior of the building under control. In this article, we combine a stochastic scenario-based MPC (SBMPC) controller together with a nonlinear Modelica model that is able to provide a richer building description and to capture the dynamics of the building more accurately than linear models. The adopted SBMPC controller considers multiple realizations of the external disturbances obtained through a statistically accurate model, so as to consider different possible disturbance evolutions and to robustify the control action. To this purpose, we present a scenario generation method for building temperature control that can be applied to several exogenous perturbartions, e.g. solar irradiance, outside temperature, and that satisfies several important stastistical properties, in contrast with simpler and less accurate methods adopted in the literature. We show the benefits of our proposed approach through several simulations in which we compare our method against the standard ones from the literature, for several combinations of a trade-off parameter between comfort and energy cost. We show how our SBMPC controller approach outperforms the standard controllers available in the literature.

Control of buildings
Model predictive control
Modelica
Scenario-based model predictive control

http://resolver.tudelft.nl/uuid:722cdc21-32b1-4714-8e4e-f748724cb6fa

https://doi.org/10.1016/j.enbuild.2021.111108

0378-7788

Energy and Buildings, 247

Institutional Repository

journal article

© 2021 T.M. Pippia, Jesus Lago, Roel De Coninck, B.H.K. De Schutter