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Universal dual-port grid forming converter control
We want to examine further novel universal dual-port grid forming control for dc/ac power converters. The main advantage of this control scheme is the coupling of the converter’s ac and dc terminal voltages, making it applicable to any technology and any operation of renewable generation.
Keywords: renewable energy, primary frequency control, converter control, hybrid ac/dc power system, theoretical stability guarantees, Matlab & Simulink
The electric power system is transitioning towards a system with a large number of renewable generation (e.g., solar photovoltaics, wind generation) interfaced to the grid via dc/ac power converters. The stable and reliable operation of the system with a significant number of a converter-interfaced renewable generation largely depends on the
control of the dc/ac power converters. State-of-the-art controls can be broadly categorized into
(i) grid-forming controls (GFM) that form a stable ac voltage
waveform (i.e., frequency and magnitude) at the point of common coupling, and (ii) grid-following (GFL) that controls the converter’s dc terminal to maximize its power output. At present, a mix of state-of-the-art GFL and GFM controls is needed. This results in complex, heterogeneous system dynamics and can jeopardize the system’s stability. To overcome this obstacle, we propose a universal dual-port grid forming control that changes the control paradigm by coupling the converter’s ac and dc terminal voltages and can be used for bidirectional grid support. The implication of the control on the energy storage, its compatibility with the existing converter controls, and better transient response are only some of the open challenges for the universal dual-port grid forming control.
Currently, I have a few open projects that encompass theoretical results and/or high-fidelity simulations. Moreover, projects are adapted according to the student’s interests and preferences. Moreover, I am always searching for highly motivated students whose promising results can be turned into a publication.
The electric power system is transitioning towards a system with a large number of renewable generation (e.g., solar photovoltaics, wind generation) interfaced to the grid via dc/ac power converters. The stable and reliable operation of the system with a significant number of a converter-interfaced renewable generation largely depends on the control of the dc/ac power converters. State-of-the-art controls can be broadly categorized into (i) grid-forming controls (GFM) that form a stable ac voltage waveform (i.e., frequency and magnitude) at the point of common coupling, and (ii) grid-following (GFL) that controls the converter’s dc terminal to maximize its power output. At present, a mix of state-of-the-art GFL and GFM controls is needed. This results in complex, heterogeneous system dynamics and can jeopardize the system’s stability. To overcome this obstacle, we propose a universal dual-port grid forming control that changes the control paradigm by coupling the converter’s ac and dc terminal voltages and can be used for bidirectional grid support. The implication of the control on the energy storage, its compatibility with the existing converter controls, and better transient response are only some of the open challenges for the universal dual-port grid forming control.
Currently, I have a few open projects that encompass theoretical results and/or high-fidelity simulations. Moreover, projects are adapted according to the student’s interests and preferences. Moreover, I am always searching for highly motivated students whose promising results can be turned into a publication.