Multi-mode converter control for linear generator-based wave energy system

The electrification of remote islands has long been a subject of research interest, primarily because of their historical reliance on fossil fuels, leading to a significant carbon footprint. Recent advancements in wave energy converters offer a promising avenue to make these islands more self-sustainable while considerably reducing carbon emissions. However, the persistent issue of voltage dips due to weaker grids continues to pose a challenge. This study introduces a multi-mode converter control strategy with the goal of electrifying remote islands, employing a linear generator-based wave energy converter in a unified electrical model. Various scenarios, including voltage dips and mainland grid disconnection, are simulated using MATLAB/Simulink. The study demonstrates the converter's ability to transition swiftly and smoothly in response to these scenarios, ensuring an uninterrupted power supply. Furthermore, the analysis indicates that the power quality at the point of common coupling remains well within acceptable standards. This paper models a novel multi-mode inverter control approach to electrifying a remote island load using a wave power park. Grid feeding control, grid support control and grid forming control are used in different scenarios based on the load requirement and mainland grid connection. The control of a hybrid energy storage system is also discussed, which is used to successfully reduce the wave power park power fluctuations. image