A great man is one who collects knowledge the way a bee collects honey and uses it to help people overcome the difficulties they endure - hunger, ignorance and disease!
- Nikola Tesla

Remember, remember always, that all of us, and you and I especially, are descended from immigrants and revolutionists.
- Franklin Roosevelt

While their territory has been devastated and their homes despoiled, the spirit of the Serbian people has not been broken.
- Woodrow Wilson

Slobodan Ćuk

BSEE, Belgrade University, Yugoslavia, 1970
MSEE, University of Santa Clara, CA, USA 1974
Ph.D., Caltech, CA, USA, 1976

Dr. Slobodan Ćuk was a full-time Professor of Electrical Engineering at the California Institute of Technology until January 1, 2000. During that time, more than 30 students obtained their Ph.D. degree in Power Electronics under Dr. Ćuk's guidance. Many of them are now leading researchers and/or Professors of Power Electronics in the U.S. and abroad.

Dr. Ćuk won a coveted IR*100 Award in 1980 from the Industrial Research Magazine for the invention of a new and patented switching converter topology and several of its extensions, which are now known as the ĆUKonverter technology. For the invention of Integrated Magnetics and expediting the development of switched-mode power converters, Dr. Ćuk obtained the prestigious 1991 Edward Longstreth Medal from the Franklin Institute, which was for the first time in its 100 years history awarded to researchers in Power Electronics. His publications include over 100 scientific papers in the Power Electronics field and a three-volume book on Advances in Switched-Mode Power Conversion.

Over a span of 20 years, Dr. Ćuk has taught a number of public and in-house courses in the United States, Europe and Far East, and gave a number of tutorial seminars at leading Power Electronics conferences throughout the world. These courses and seminars have been attended by over 4,000 Power Electronics specialists.

In 1979, Dr. Ćuk founded TESLAco with the charter to apply the basic research results developed at Caltech to practical commercial and military designs. He holds over 30 patents related to new switched-mode power conversion concepts.

He received Franklin laureate award for pioneering and expediting the development of integrated magnetics and switched-mode power conversion.

From TESLAco


Modelling, analysis, and design of switching converters

Citation

Cuk, Slobodan (1977) Modelling, analysis, and design of switching converters. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-03262008-110336

Abstract

The principal objective of this work on modeling and analysis of switching dc-to-dc converters and regulators is to obtain a linear model (either through state-space or linear circuit description), subject to appropriate restrictions, for the inherently nonlinear power state in which the dc conversion is accomplished. A general unified approach to modeling and analysis of switching dc-to-dc converters is developed which is directly applicable to any dc-to-dc operating in either of two conduction modes (continuous or discontinuous inductor current), and which results in a final dynamic linear model either in terms of state-space equations or in terms of their corresponding linear circuit models. In particular, in Part I this analysis technique, called state-space averaging, is applied to the continuous conduction mode of converter operation, while in Part II appropriate extension of the method to the discontinuous conduction mode is made. In each case, the culmination of modeling and analysis is achieved in the development of canonical circuit models which represent any such converter regardless of its detailed configuration.

The insights that emerge from the general state-space modeling approach (Parts I and II) lead in Parts III and IV to the design of new converter topologies through the study of generic properties of the cascade connection of basic buck and boost converters. This study paves the way in Part IV to the discovery of a new switching converter based upon capacitive rather than the usual inductive energy transfer. The new converter is shown to have substantial advantages over the conventional converters in its class in efficiency, performance, and also in size and weight.

Bothe the state-space averaged models and their corresponding circuit realizations provide the circuit designer with a powerful tool for analysis of existing converters as well as for synthesis of new converter topologies.

Thesis File (PDF 10 MB)

From CaltechTHESIS - A Caltech Library Service


SA

 

People Directory

Vladimir Kulenović

Following the completion of his post-graduate conducting studies at the Juilliard School, Vladimir Kulenovic was named Associate Conductor of Utah Symphony | Utah Opera in the U.S., Principal Conductor of the Kyoto International Music Festival in Japan and Resident Conductor of the Belgrade Philharmonic Orchestra in Serbia. His recent guest conducting engagements included collaborations with renowned orchestras in the US, Europe in Asia, as well as illustrious soloists including Leon Fleisher, Mischa Maisky, Akiko Suwanai, Joseph Silverstein and Augustin Hadelich, to name but a few.

Read more ...

Publishing

On Divine Philanthropy

From Plato to John Chrysostom

by Bishop Danilo Krstic

This book describes the use of the notion of divine philanthropy from its first appearance in Aeschylos and Plato to the highly polyvalent use of it by John Chrysostom. Each page is marked by meticulous scholarship and great insight, lucidity of thought and expression. Bishop Danilo’s principal methodology in examining Chrysostom is a philological analysis of his works in order to grasp all the semantic shades of the concept of philanthropia throughout his vast literary output. The author overviews the observable development of the concept of philanthropia in a research that encompasses nearly seven centuries of literary sources. Peculiar theological connotations are studied in the uses of divine philanthropia both in the classical development from Aeschylos via Plutarch down to Libanius, Themistius of Byzantium and the Emperor Julian, as well as in the biblical development, especially from Philo and the New Testament through Origen and the Cappadocians to Chrysostom.

With this book, the author invites us to re-read Chrysostom’s golden pages on the ineffable philanthropy of God. "There is a modern ring in Chrysostom’s attempt to prove that we are loved—no matter who and where we are—and even infinitely loved, since our Friend and Lover is the infinite Triune God."

The victory of Chrysostom’s use of philanthropia meant the affirmation of ecclesial culture even at the level of Graeco-Roman culture. May we witness the same reality today in the modern techno-scientific world in which we live.