報告題目：Modelling of the Switched-Mode Power Converters
報 告 人：Alexander Abramovitz 副教授（以色列特拉維夫大學）
主 持 人：皇甫宜耿 副教授
報告地點：騰訊會議（會議號：434 381 615）
報告簡介：The knowledge of the dynamics of switching converters is a prerequisite to switching regulator control loop design. To overcome the modelling challenges posed by switching power stages a number of approaches were proposed for deriving the small-signal transfer functions of pulse width modulated converters. These methodologies can mainly be classified into either analytical or equivalent circuit techniques. Potentially, each approach can yield same results, however, differs by the required computational burden.
Switching converters comprised of coupled inductors have steeper conversion ratio and more complex behavior than their basic counterparts. Analysis of this class of converters can be performed applying the Tapped Inductor Switcher (TIS) model formulated using the Signal Flow Graph (SFG) approach. This webinar will present the TIS-SFG models developed by the author and his colleagues for simulation and theoretical study of the dynamic stability of converters with coupled magnetic devices.
In the upcoming webinar we’ll discuss the principles and implementation of the proposed models and exchange experimental knowhow.
Alexander Abramovitz was born in Chisinau, former USSR, and repatriated to Israel. He received the B.Sc., M.S. and Ph.D. degrees all in Electrical Engineering from Ben-Gurion University in the Negev, Beer-Sheva, Israel and was a postdoctoral fellow at the University of California, Irvine, USA.
He was with the Department of Electrical and Computer Engineering Ben Gurion University in the Negev Beer-Sheva, Israel and with the Electrical Engineering and Computer Science Department, University of California, Irvine. Currently he is with the Department of Physical Electronics, Tel Aviv University, Israel. He also served as a consultant to commercial companies in the areas of analog and power electronics.
Dr. Abramovitz’ research interests include switch mode and resonant power conversion, active power factor correction, converter modelling, LED lighting, grid connected alternative energy sources, fault current limiters, electronic instrumentation and engineering education.