Decentralized Power Management in a Hybrid Fuel Cell Ultracapacitor System
Decentralized Power Management in a Hybrid Fuel Cell Ultracapacitor System
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DOI：
10.1109/tcst.2015.2464295
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发表时间：
2016-05
影响因子：
4.8
通讯作者：
Omid Madani;A. Bhattacharjee;Tuhin Das-
中科院分区：
文献类型：
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作者：
Omid Madani;A. Bhattacharjee;Tuhin Das-
本文讨论了由燃料电池（FC）和超级电容器组成的混合能源系统的分散控制。为FC和超级电容器开发单独的控制器以进行电源管理，而不是一个中央控制器。控制器之间的显式通信，如本地感测信息的交换，是不存在的。前者在负载跟随模式下操作FC，同时衰减燃料利用率的瞬态波动。后者允许超级电容器用作能量缓冲器。本文提出了一种简单的基于能量守恒的方法，其中FC控制器基于其自身的瞬态响应历史来估计由电容器补偿的能量间隙。因此，它调节自己的输出功率。电容器控制又通过耗散多余能量或调节负载电压来赋予控制器的集体性能鲁棒性。总之，在分散的框架内实现了协同电源管理。开发了一个实验测试台来验证该方法，并提供了实验结果。本文考虑一个电源和一个储能元件，必须做进一步的研究，将这种方法转化为电力网络。
This paper addresses decentralized control of a hybrid energy system consisting of a fuel cell (FC) and an ultracapacitor. Separate controllers are developed for the FC and the ultracapacitor for power management rather than one central controller. Explicit communication between controllers, such as exchange of locally sensed information, is absent. The former operates the FC in a load-following mode, while attenuating transient fluctuations in fuel utilization. The latter allows the ultracapacitor to be used as an energy buffer. The paper proposes a simple energy-conservation-based approach where the FC controller estimates the energy gap that is compensated for by the capacitor, based on its own transient response history. Accordingly, it modulates its own output power. The capacitor control, in turn, imparts robustness to the collective performance of the controllers by either dissipating excess energy or regulating the load voltage. Together, synergistic power management is achieved within a decentralized framework. An experimental test stand is developed to validate the approach and experimental results are provided. This paper considers one power source and one energy storage element, and further research must be done to translate this approach to power networks.