Abstract:
Since power grids are part of the critical infrastructure, PHiL-simulations provide an efficient way to analyze the impact of new or modified hardware on the grid without compromising its secure operation. In such test environments, power amplifiers are often used to reproduce the behavior of a simulated converter or grid, with the hardware directly connected to them. However, even when linear amplifiers are used, their linearity is limited to a certain frequency range. When considering the switching behavior of different power electronics used in the test setup under investigation, the exact behavior of the test environment used, in particular that of the amplifiers and the measurement infrastructure, must be known in order to assess the validity of the results obtained. Using two exemplary measurement setups, a characterization of two different linear amplifiers is shown, whereby the resulting uncertainties due to the measuring device used are also discussed.
Andreas Bammes - Friedrich-Alexander-Universität Erlangen-Nürnberg