风电/制氢/燃料电池/超级电容器混合系统控制策略

风能的波动性及间歇性致使传统风力机出力不可控,即出力曲线与负荷调度曲线不一致。本文构造了一种风电/制氢/燃料电池/超级电容器耦合于直流母线的结构。针对风电/制氢/燃料电池/超级电容器混合系统10种运行模式,提出了一种能量管理策略,确保在各个控制单元的作用下,能量协调流动于混合系统各子单元之间。此能量管理策略不仅使混合系统出力可控,而且提高了风能利用率,平抑了直流母线电压波动,平滑了上网功率。PSCAD/EMTDC仿真结果验证了风电/制氢/燃料电池/超级电容器混合系统控制策略的有效性。

Control of Hybrid System of Wind/Hydrogen/Fuel Cell/Supercapacitor

The intermittent of wind lead to the uncontrollable power out of traditional wind turbine.Namely,the curve of power is different from the curve of load.A dc-coupled wind/hydrogen/fuel cell/supercapacitor hybrid system is studied in this paper.Basing on the 10 operation modes of the wind/hydrogen/fuel cell/supercapacitor hybrid system,a kind of energy management is proposed to coordinate the flow of energy between the sub-units of hybrid system under control units.Not only dose the energy management make controllable power out of hybrid system,but also the wind efficiency is improved and the DC bus voltage fluctuation is stabilized and the internet power is smoothed.In the PSCAD,the simulation results show that control strategy of wind/hydrogen/fuel cell/supercapacitor hybrid system is effective.