The invention discloses a fuel cell ship distributed dynamic power distribution method based on autonomous frequency division. The method comprises the following steps: establishing a fuel cell ship multi-electric hybrid power system model taking a fuel cell, a lithium battery, a super capacitor, a DC/DC converter and a ship as loads; based on a fuel cell ship multi-electric hybrid power system model, distribution of dynamic ship load power in different power supply units of a fuel cell, a lithium battery and a super capacitor is realized by adopting a hybrid droop control method of virtual impedance, and charge state equalization of a parallel lithium battery pack is realized based on a charge state equalization method of adaptive droop control; according to the invention, ship dynamic load power can be autonomously distributed according to power units with different characteristics, balance of the charge state of the parallel lithium battery pack and stable control of the direct current bus voltage are realized, and meanwhile, distributed control is adopted, so that the communication pressure among the units is reduced.
本发明一种基于自主分频的燃料电池船舶分散式动态功率分配方法,包括以下步骤:建立燃料电池、锂电池、超级电容、DC/DC变换器和船舶为负载的燃料电池船舶多电混合动力系统模型;基于燃料电池船舶多电混合动力系统模型,采用虚拟阻抗的混合下垂控制方法,实现动态船舶负载功率在燃料电池、锂电池、超级电容不同供电单元中的分配,基于自适应下垂控制的荷电状态均衡方法,实现了并联锂电池组荷电状态均衡;本发明可以根据不同特性的动力单元自主分配船舶动态负载功率、并联锂电池组荷电状态的均衡和直流母线电压稳定控制,同时采用分散式控制,减小了各单元之间的通信压力。
Distributed dynamic power distribution method for fuel cell ship based on autonomous frequency division
一种基于自主分频的燃料电池船舶分散式动态功率分配方法
2025-02-07
Patent
Electronic Resource
Chinese
Fuel cell transmission system and method for power division and distribution therein
European Patent Office | 2023
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