Abstract. This article describes the work being developed concerning the optimization of climate conditions in office buildings by the use of modeling and simulation tools to define the building's energy demand, and the design and implementation of PID controls for the different control areas of the HVAC system, whose parameters have been adjusted based on simulation. To perform these studies, different simulation tools have been combined to obtain a model of the entire system: design of building and building's energy demand in HVAC with Google SketchUp and EnergyPlus using a complete year of simulation with weather conditions of the building's location, and HVAC system modeling with Dymola. These different tools have been combined with BCVTB co-simulation platform. A physical implementation is being finished by the deployment of distributed temperature and humidity sensors along the building. The measured data will be used to fine tune the PID controller parameters previously designed in the modeling stage.

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The following paper presents the work being done on the comparative design, simulation and experiments concerning advanced digital linear control techniques for power inverters. Based on an existing inverter topology being developed and implemented, with a conventional DSPprogrammed PI control, a research is done on more advanced linear control techniques that might improve the PI response, allowing at the same time a separate regulation of active and reactive power for electricity connection to the grid.