Papers by Keyword: Cut-Off Frequency

Abstract: In this study, the necessity and beneficial characteristics of SiC power devices for novel power electronic applications are shown from an application point of view. The body diode properties of state of the art 1200 V SiC MOSFETs are discussed and the dependencies of switching speed are derived. Furthermore, the calculation of the fundamental efficiency limit of 99.67 % at the example of a bidirectional DC/DC converter operating at 100 kHz is shown.

Abstract: Water filled pipe as an experimental model of the sea pipeline on ships, the study has very important significance of the sound propagation characteristics. In this paper, eigenfunctions of pipeline interior sound field are theoretically calculated at first. And through the Matlab software simulation calculation, the cutoff frequency is shown. And then, the water filled pipe acoustic insertion loss is given by the experimental study. Through the research, we validate the cutoff frequency calculation, and gives the insertion loss of pipelines.