Dissertação
Projeto e validação experimental de um controlador robusto H2 aplicado a conversores Boost
Fecha
2011-07-25Registro en:
MACCARI JUNIOR, Luiz Antonio. Design and experimental validation of a robust H2 controller applied to Boost converters. 2011. 70 f. Dissertação (Mestrado em Engenharia Elétrica) - Universidade Federal de Santa Maria, Santa Maria, 2011.
Autor
Maccari Junior, Luiz Antonio
Institución
Resumen
This dissertation presents as the main contribution the design and experimental
validation of a robust H2 controller applied to boost converters with variations on the
parameters load resistance, input voltage and operating point duty cycle. First, a
polytopic model of the plant is presented, allowing to represent all the possible variations
of the parameters within intervals previously established. Design conditions for a robust
H2 controller, optimal under the quadratic stability, are detailed and used, allowing
to efficiently calculate the controller gains. These gains are implemented with analog
circuitry and the closed-loop system is tested by means of simulation and experimental
results, which show a good match and illustrate a good performance. Finally, the small
perturbation rejection capacity of the closed-loop system subject to parametric variations
is evaluated using the H∞ guaranteed cost.