INVESTIGADORES
OGGIER German Gustavo
congresos y reuniones científicas
Título:
Fast Transient Boundary Control of the Dual Active Bridge Converter Using the Natural Switching Surface
Autor/es:
GERMÁN G. OGGIER; MARTIN ORDONEZ; JUAN M. GALVEZ; FEDERICO LUCHINO
Reunión:
Congreso; IEEE Energy Conversion Congress and Exposition (ECCE); 2012
Resumen:
This paper presents a boundary control scheme
for Dual Active Bridge (DAB) converters using the Natural
Switching Surface (NSS). The implementation of a curved
switching surface for DAB converters is a new area of research
undertaken in this work. The proposed technique brings
the benefit of unprecedented dynamic performance, already
developed for non-isolated topologies (e.g., buck and boost),
to this more complex isolated topology. The analysis provides
insight into the natural trajectories of the DAB converters and
creates an accurate framework in the normalized geometrical
domain. As a result, the physical limits of the converter under
study become evident. Those physical limits are exploited by
employing the NSS to obtain optimal dynamic response under
start-up, sudden load transients, and reference change. In
addition, fixed-frequency operation is one of the key features of
the proposed control scheme which allows optimizing the design
of the high-frequency transformer. Experimental results are
presented to validate the NSS for DAB converters and illustrate
the benefits of the normalization technique.