INVESTIGADORES
OGGIER German Gustavo
congresos y reuniones científicas
Título:
Boundary Control for Isolated Topologies: The Natural Switching Surface for Full-Bridge ZVS
Autor/es:
GERMÁN G. OGGIER; MARTIN ORDONEZ
Reunión:
Congreso; IEEE Energy Conversion Congress and Exposition (ECCE); 2012
Resumen:
This paper presents the use of a high performance
boundary controller for a classic isolated topology: the Full-
Bridge ZVS. An enhanced dynamic response is obtained by employing
the Natural Switching Surface (NSS), which is thoroughly
derived in the normalized geometrical domain. The advantages
of the normalization are the simple graphical representation, the
generality for any combination of parameters, and the mathematical
simplicity. Recently, non-isolated basic topologies have
benefited from advancements in boundary control. The analysis
and derivation in this work bring the benefit of outstanding
dynamic performance to this isolated topology. As demonstrated
in this work, the relationship between the leakage and output
filter inductances make possible the formulation of the natural
trajectories for isolated converters. The resulting SS provides an
excellent dynamic response during start-up, reference change,
and sudden output loading conditions. Experimental results are
presented to illustrate the characteristics and advantages of the
control scheme, and the converter operation with fixed switching
frequency.