Power Management Unit With Its Control for a Three-Phase Fuel Cell Power System Without Large Electrolytic Capacitors
Power Management Unit With Its Control for a Three-Phase Fuel Cell Power System Without Large Electrolytic Capacitors
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DOI：
10.1109/tpel.2011.2162533
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发表时间：
2011-07
影响因子：
6.7
通讯作者：
Xiao Li;Wenping Zhang;Haijin Li;Ren Xie;Min Chen;G. Shen;Dehong Xu
中科院分区：
文献类型：
--
作者：
Xiao Li;Wenping Zhang;Haijin Li;Ren Xie;Min Chen;G. Shen;Dehong Xu
本文研究了一种三相四线燃料电池电源系统。在独立模式下，系统对负载特性敏感，因为三相负载的变化或不平衡将影响燃料电池的安全性和寿命。提出了一种新型的电源管理单元（PMU）及其控制策略。PMU可以补偿燃料电池的慢动态。此外，PMU还充当直流母线电容器，以处理低频电流涟漪。因此，在燃料电池电源系统中可以消除大的直流母线电解电容器。推导了PMU的控制策略，并通过实验对整个系统进行了验证。
This paper investigates a three-phase four-wire fuel cell power system. The system is sensitive to the load characteristic in a stand-alone mode, because variation or unbalance of the three-phase load will affect the safety and lifespan of the fuel cell. A novel power management unit (PMU) with its control strategy is proposed. The PMU can compensate fuel cell slow dynamics. In addition, the PMU acts as dc bus capacitors to deal with the low-frequency current ripple. Therefore, the large dc bus electrolytic capacitors can be eliminated in the fuel cell power system. The control strategy of the PMU is derived and the whole system is verified by the experimental results.