有源前端组网的直流船舶电网高能效运行控制

High Energy Efficiency Operation and Control of DC Shipboard Grid with Active Front End Networking

直流船舶电网为航运业绿色转型提供了有效可行的解决方案。考虑到实际船舶的运行工况,本文提出一种分层协调控制策略,主要用于有源前端组网的直流船舶电网中功率单元协调运行的设备层控制系统和功率层控制系统。其中,设备层控制系统负责实现发电机组转速的无静差跟随与不同容量柴油发电机组间的动态/稳态功率共享;功率层控制系统负责提升母线电压质量,提高系统能效。最后,利用仿真与半实物仿真系统对控制策略进行验证,结果表明该控制策略可有效提高系统运行能效,最高节省约10%的燃油。

The DC shipboard grid provides an effective and feasible solution for the eco-friendly transformation of the shipping industry.Considering operational of real ships,a hierarchical coordinated control strategy is proposed,which mainly includes a bottom control system for the coordinated operation of power units in the DC shipboard grid with an ac⁃tive front end networking and a power management system.The bottom control system is mainly used to realize the nonstatic error following of the generator set’s speed and dynamic/steady-state power sharing among diesel generator sets with different capacities.The power management system is mainly responsible for improving the bus voltage quality and system energy efficiency.Finally,the efficacy of the control strategy is verified by results of simulations and a hardwarein-the-loop simulation system,showing that this strategy can effectively improve the energy efficiency of system opera⁃tion and save up to 10%of fuel.