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Full-Text Articles in Controls and Control Theory
Stability Analysis And Design Of Grid-Interactive Power Electronic Converters, Le Kong
Stability Analysis And Design Of Grid-Interactive Power Electronic Converters, Le Kong
Doctoral Dissertations
The increasing penetration of power electronic converters (PECs) can provide high flexibility, full controllability, sustainability, and improved efficiency for future electric power systems. However, it also introduces new challenges since the wide-frequency-band control dynamics of PECs can interact with the power system and result in different types of instability issues. To holistically address the instability issues, several research activities are conducted in this dissertation.
The modular multilevel converter (MMC), which is one of the most common PECs in high- or medium-voltage power systems, is investigated. An improved MMC dc impedance model is developed by considering both the submodule voltage and …
Efficient Control Approaches For Guaranteed Frequency Performance In Power Systems, Samaneh Morovati
Efficient Control Approaches For Guaranteed Frequency Performance In Power Systems, Samaneh Morovati
Doctoral Dissertations
Due to high penetration of renewable energy, converter-interfaced sources are increasing in power systems and degrading the grid frequency response. Synthetic inertia emulation and guaranteed primary frequency response is a challenging task. Still, there is high potential for application of highly controllable converter-interfaced devices to help performance. Renewable energy sources and demand side smart devices also need to be equipped with innovative frequency control approaches that contribute to frequency regulation operations.
First, the wind turbine generator is chosen to represent an example of a converter- interfaced source. An augmented system frequency response model is derived, including the system frequency response …