Development of a HIL system for simulating FMUs

Abstract

Several years ago, USN purchased a servo test stand for education purposes, to demonstrate small-scale load handling, consisting of two induction machines connected to each other, and controlled by its own driver. The servo test stand has a limited range of application, so a real-time processing unit was acquired to remote control the test stand with more opportunities.

The purpose of this thesis is to analyses the possibility of controlling the servo test stand with the use of a real-time processing unit, and the possibility of controlling the servo test stand with the use of models based on the function mock-up interface architecture. In this study a hydropower model was included to simulate how the varying flow in the penstock is acting on the turbine and generator, using both OpenModelica and Dymola to generate FMUs.

It was found to be possible to create simple FMUs in OpenModelica for controlling the servo test stand, and when creating hydropower FMUs the modelling tool Dymola had to be used to make it possible to control the servo test stand, due to interface challenges between OpenModelica and the hydropower library OpenHPL.