基于模糊控制的混合动力船舶能量管理策略研究

Research on Energy Management System for Hybrid Ship Based on Fuzzy Control

以由燃料电池、超级电容和蓄电池组成的混合动力船舶为研究对象,根据各动力源的特性参数建立混合动力系统数学模型。根据燃料电池、蓄电池和超级电容的动力特性,提出了一种基于模糊逻辑的能量管理策略,借助模糊逻辑控制算法和隶属度函数概念,综合考虑各影响因素(如功率需求,SOC等),从而得到最佳优化方案。通过模糊控制器将蓄电池SOC、超级电容SOC、需求功率输入量模糊化,经过所设定的控制规则来完成能量分配与管理,得到燃料电池、蓄电池和超级电容的输出功率。最后在MATLAB/SIMULINK环境下建立了混合动力系统仿真模型,仿真结果表明:基于模糊逻辑的能量管理策略能实现对混合动力系统能量的优化管理与控制,使船舶安全可靠运行,为实现船舶纯绿色的发展提供技术支撑。

A hybrid vehicle composed of fuel cell,battery and super capacitor is taken as the research object,and the mathematical model of hybrid system is established according to the characteristic parameters of each power source. According to the dynamic characteristics of fuel cell,battery and super capacitor, an energy management strategy based on fuzzy logic is proposed. With the fuzzy logic control algorithm and membership function concept,comprehensively considering various factors(such as power requirements,SOC,etc.) to get the best optimization plan. Through the fuzzy controller to fuzzy the battery SOC, super capacitor SOC, the required power input, etc. through the set of control rules to complete the energy distribution and management to get output power of fuel cell, battery and super capacitor. Finally, a simulation model of hybrid system was established in MATLAB/SIMULINK environment,the results show that the energy management strategy based on fuzzy logic can realize the optimal management and control of the hybrid energy system,so that the ship can operate safely and reliably,and provide technical support for the pure and green development of ship.