Grid-Forming Current Vector Control of Ship Shore Power Converter

After the ship docks, the shore power system is used more and more frequently, and the uninterrupted power switching strategy is an important issue. In this paper, combined with the characteristics of the ship-shore grid connection, the grid connection process is optimized when the shore power system does not need a black start, and a voltage source converter control strategy based on current vector control is proposed. Amplitude-frequency outer loop control is added to realize system frequency and elegant tracking control, and support island operation. This paper also deduces the input and output control model of the ship-shore interconnection system, and analyzes the system stability in the control strategy, the tracking characteristics of frequency and voltage, and the anti-interference characteristics of the load current. Finally, a simulation experiment platform is built, and the experimental results show the effectiveness of the proposed uninterruptible switching control strategy.