Active Self-Switching Methods for Emerging Monolithic Bidirectional Switches Applied to Diode-Less Converters

This paper presents a recently introduced switching principle for emerging monolithic bidirectional devices. Based on the hypothesis that those switches may overcome conventional diode type solutions in power converters, an active self-switching process becomes compulsory. Its principle relies on the measurement of both voltage and current polarity, in order to allow a natural switching as commonly used in matrix conversion. A self-switching method, implemented close to the switch, allows the detection of both short-circuits and open circuits. The accuracy of the presented system is experimented and validated in a 1kVA buck converter where the free-wheeling path is performed by a synthesised diode. The results that are discussed in this paper open a new perspective by introducing the principle of a so-called bidirectional diode as well as the commutation of sources of a similar nature.

Published in:
Epe: 2009 13Th European Conference On Power Electronics And Applications, Vols 1-9, 783-791
Presented at:
EPE 2009 : 13th European Conference on Power Electronics and Applications, Barcelona, Spain, 8-10 September 2009
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa

Note: The status of this file is: EPFL only

 Record created 2009-09-16, last modified 2018-01-28

External link:
Download fulltext
Rate this document:

Rate this document:
(Not yet reviewed)