We address the design of a predictive power-split management system for the transient and fluctuating propeller load sharing. Modeling of the power system was carried out based on experimental data gathered from the hybrid plant and on first principles for the diesel engine behavior and battery charging. Propulsion plant and wave disturbance models are employed to simulate realistic marine load application that affects the powerplant operation. A propeller observer is developed to provide the propeller law parameter to the controller, in order to perform load estimation and prediction based on shaft speed elevation. A Nonlinear Model Predictive Controller (NMPC) is designed for the optimal transient power-split problem of a hybrid diesel-electric marine propulsion plant. The NMPC scheme directly controls the torque output of the diesel engine and the electric motor generator ensuring that certain constraints concerning the system overloading are met, avoiding fast accelerations, and load fluctuations of the diesel engine that affect engine performance. The control system was experimentally tested in real-time operation in a physical testbed. Results showed that controller rejected successfully load disturbances and maintained the desired rotational speed of the powertrain as well as the desirable state of charge in battery within the power plant limits, achieving smooth power transitions and compensation of power fluctuations of the diesel engine.

我们解决了用于瞬态和波动螺旋桨负载分配的预测性功率分配管理系统的设计。电力系统的建模是基于从混合动力装置收集的实验数据以及柴油发动机行为和电池充电的第一原理进行的。采用推进装置和波浪扰动模型来模拟影响动力装置运行的实际海上载荷应用。开发了螺旋桨观测器以向控制器提供螺旋桨定律参数，以便基于轴速度提升进行负载估计和预测。非线性模型预测控制器 (NMPC) 是为混合柴电船用推进装置的最佳瞬态功率分配问题而设计的。NMPC 方案直接控制柴油机和电动发电机的扭矩输出，确保满足有关系统过载的某些约束，避免柴油机的快速加速和影响发动机性能的负载波动。该控制系统在物理试验台上进行了实时操作的实验测试。结果表明，控制器成功地拒绝了负载扰动，并在发电厂限制内保持了动力系统的理想转速以及理想的电池充电状态，实现了平稳的功率转换和柴油发动机功率波动的补偿。以及影响发动机性能的柴油发动机的负载波动。该控制系统在物理试验台上进行了实时操作的实验测试。结果表明，控制器成功地拒绝了负载扰动，并在发电厂限制内保持了动力系统的理想转速以及理想的电池充电状态，实现了平稳的功率转换和柴油发动机功率波动的补偿。以及影响发动机性能的柴油发动机的负载波动。该控制系统在物理试验台上进行了实时操作的实验测试。结果表明，控制器成功地拒绝了负载扰动，并在发电厂限制内保持了动力系统的理想转速以及理想的电池充电状态，实现了平稳的功率转换和柴油发动机功率波动的补偿。