The thesis consists of implementing a Generalized Predictive Control (GPC)
strategy for controlling the output voltage of the T-type converter with output LC
filter, whose control signals are modulated by a fast three-dimensional Space Vector
Modulation (SVM). The GPC strategy used for the T-type converter involves
developing a system of dynamic equations from the output LC filter and load, which
is transformed to a Controlled Auto-Regressive and Moving-Average (CARIMA)
model in order to obtain a sequence of control signals, so that a cost function is
optimized and the reference is tracked.
The core of the thesis addresses the main problem of dc-link capacitor balancing.
This is done by modeling the converter and deploying a mathematical analysis of the
capacitor voltage difference dynamics, by singular perturbation approach. This
analysis results in an explicit sinusoidal disturbance. Now, classical control theory is
applied by using a Luenberger Observer (LO) in order to estimate the disturbance and
encounter it, thereby keeping the dc-link capacitor voltage balanced in the due flow of
the modulation and output voltage control. By this method, the output voltage across
the filter capacitor is controlled, the dc-link capacitor voltage is balanced and the lowfrequency
voltage ripples present in the dc-link of the T-type converter are reduced to
an acceptable level.Máster en Electrónica, Tratamiento de Señal y Comunicacione
