Pulse width Prediction Control Technique Applied to a Half-Bridge Boost

Nancy Gelves

Abstract


The pulse width prediction control technique has
been widely used in AC-DC converters with power factor correction
in boost topology, where satisfactory results have been
reported without the need to use classic control laws. However,
this technique has not been explored for other types of ACDC
converters with power factor correction. In this work, the
use of this technique is proposed in an AC-DC converter with
power factor correction in a half-bridge boost topology. This
topology presents high efficiency because it uses the least number
of semiconductors compared to other topologıes. In this technique
the duty cycle is predicted by processing the average values of
state and input variables of the converter in half bridge boost
topology, using only four multiplications and five additions, which
implies less complexity in its implementation. For its validation
simulations were performed using MATLAB R simulink, where
it was possible to observe values of power factor and THD
comparable with other control methods such as non-linear carrier
control, and conventional analog control, both reported in the
literature.


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