Seminario 243 Operating Region and Control for Power Converters Connected to a Variable Frequency and Amplitude Voltage Grid Supply Sr. Jaime A. Rohten C., Alumno de Doctorado en Ingeniería Eléctrica, LCDA – DIE Power converters have been widely used in industrial applications as parallel and
series compensators, UPQCs, and STATCOMs. These electronic devices can also be
utilized on weak-grid or micro-grid systems, where both the supply voltage amplitude
and frequency, may vary considerably from the nominal values. Micro-grid and weakgrid
systems are commonly associated to distribute non-conventional power
generation sources, where the voltage and frequency deviation are as a result of
unbalances between generation and consumed power. This work studies and develops
a Series Compensator control for a non-constant power supply. The study is focused
on the rectifier control in order to get a stable closed loop system for sags and swells
as well as frequency variations. In addition, an operating region study is performed in
order to evaluate the capabilities and to find the maximum range of frequency
variation tolerated by this topology. Finally, simulated results show the feasibility of
the proposed control for a wide frequency and voltage variation. |