关键词: 起重船, 电力系统, 公共直流母线, DP-2, 电动机发电机组, LCL滤波器, 功率管理系统

Abstract: The key points of power system design for 4 000 t crane vessels are reviewed and summarized based on a self-propelled crane vessel. According to the configuration and layout of the propulsion system, the design scheme of independent propulsion grid is firstly determined in order to meet the design requirements of DP-2 ships. The configuration and characteristics of the key facilities in the power system are then introduced, including the application of the common DC bus and motor generator set in this project. Finally, the power distribution mode under the various working conditions are explained with the distribution network of the 4 000 t crane vessel, and the application and main functions of the power management system are described.

Key words: crane vessel, power system, common DC bus, DP-2, motor generator set, LCL filter, power management system