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电子学报  2012 

针对微生物燃料电池能量采集的最优电容理论计算方法与实验研究

DOI: 10.3969/j.issn.0372-2112.2012.08.022, PP. 1635-1639

Keywords: 微生物燃料电池,能量管理系统,平均功率,最优电容

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Abstract:

微生物燃料电池(MicrobialFuelCells,MFCs)已被认可为最具前景的可替代、可再生的清洁能源之一,但是其输出电压和电流较小,几乎难以直接驱动目前任何商用电子器件.在实际应用中,通常需要能量管理系统(PowerManagementSystem,PMS)来存储其输出能量,然后经变换处理后间歇式的驱动负载.在PMS中,超级电容器通常被选作为电能存储器件.由于MFC输出能量有限,如何使最多的能量转存到超级电容器中成为MFC应用领域重要的研究内容.通过分析MFC反应机理,采用目前普遍公认的MFC等效电路模型,提出了一种计算最优电容值的理论方法,选用该最优电容,能够使MFC在一个充电周期内产生的平均功率最大.基于建立的单室空气阴极MFC实验系统,进行了最优电容值检验实验.理论和实验结果验证了该方法的有效性.

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