This project deals with the modelling of a VCS system within the framework of a system-oriented simulation of the whole ECS for control and optimization purposes. This work is aligned with the Clean Sky 2 SYS ITD WP6 – Major loads, WP6.1 – Electrical Air System and Thermal Management. Within this work package, this topic is specifically related to the subsection about the New Generation of Cooling Systems.
The aims of the TwinECS project are, on the one hand, to enhance existing Modelica libraries to simulate Environmental Control Systems (ECSs) based on the major challenges underlined in the Clean Sky 2 MALET project, and on the other hand, to develop and integrate surrogate models based on data analytics technics to reduce computational costs. The TwinECS specific objectives are summarized as follows:
• Development of thermo-fluid models: VCS heat exchangers and their successful integration in assembled VCS models.
• Development of electrical models for: motor, power inverter, ATRU, IGBT and MOSFET.
• Development of surrogate models of the aforementioned thermo-fluid and electrical components based on data atechniques technics.
• Simulation of a complete thermo-fluid-electrical VCS model using both the standard and the surrogate models.
The numerical tool developed within this project has proven to overcome the main challenges underlined in the Clean Sky 2 MALET project. The required performance in terms of accuracy, computational time, and more importantly, numerical robustness has been achieved. The tool will play a crucial role in the design of more efficient ECS within the new More Electrical Approach (MAE). The ECS optimization supported by model simulations will contribute to the global Clean-Sky objectives such as competitiveness improvement and reduction of fuel consumption.
