Advanced simulation of building systems and control with simulink

The paper presents the advanced use of S-Functions, facilitated by the Matlab/SimuLink environment. An existing indoor climate model is implemented in an S-Function, consisting of a continuous part with a variable time step and a discrete part with a fixed time step. The heating systems, including a heat pump, an energy roof and thermal energy storage (TES) are modeled as continuous systems using SFunctions. All presented models are validated. The advantages of S-Functions are evaluated and it demonstrates the powerful and flexible use of MatLab/SimuLink.