Date of Award
Summer 2025
Document Type
Open Access Dissertation
Department
Electrical Engineering
First Advisor
Herbert L. Ginn
Abstract
Voltage Source Converters (VSCs) with inductive-capacitive (LC) filters are prevalent in power electronics applications. There are many control techniques utilized for that category of power converter topology. However, as converter applications continue to increase their switching frequency, faster control methods are desirable to take advantage of the higher bandwidth that increased switching frequency allows for
Dynamic pole placement (DPP) controls are very promising methods for achieving high-speed control of VSCs with LC filters. However, the conventional DPP controls have very high sensitivity to disturbances and noise. In order to address this, two novel DPP current control methods are proposed and compared to existing methods in that family of control techniques.
First, two novel DPP current controls have been developed. They are distinguished by whether the load current is implicitly compensated by the control or not. Furthermore, a generalized method for designing outer deadbeat voltage control for each of the two DPP current controls is proposed, enabling the inner current loop to ensure sufficient damping and robustness while achieving fast outer voltage control through deadbeat control.
Second, a more accurate inner loop model for the conventional predictive multiloop deadbeat control has been derived. With the more accurate model, an improved outer deadbeat voltage control has been developed, achieving reduced overshoot and shorter settling time.
Finally, it has been established that the conventional predictive deadbeat current control can be interpreted within the DPP control framework. This insight enables us to integrate the two proposed DPP current controls with conventional controls into a unified framework. Such a unified perspective allows for a systematic evaluation of trade-offs in each approach, facilitating the selection of control strategies that best meet specific design requirements and desired performance.
Rights
© 2025, Byunghee Moon
Recommended Citation
Moon, B.(2025). Generalized Dynamic Pole Placement Control for Voltage Source Converters with Inductive-Capacitive Output Filters. (Doctoral dissertation). Retrieved from https://scholarcommons.sc.edu/etd/8418