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The architecture of the UPS based on PEM Fuel Cell (PEMFC) is investigated. Firstly, the output characteristics of PEMFC are studied. High efficiency power conversion from hydrogen energy to electric power is emphasized. The characteristics match between PEMFC and load is another key issue. Energy & power management for FC-UPS is explored to satisfy both the load dynamics and PEMFC optimal operation...
Due to the long cold start time and slow dynamics of proton exchange membrane (PEM) fuel cell (FC) stack, operating modes transfer control strategy for fuel cell uninterruptible power supply (FC-UPS) is different from the traditional uninterruptible power supply (UPS) system. In this paper, a seamless transfer control strategy, which is suitable for FC-UPS, is proposed. The power conversion architecture...
For the UPS using fuel cell as the backup power (Fuel Cell UPS), since the dynamics of fuel cell could not fulfill the requirements of the critical load, power management unit (PMU) is indispensable to fill the power gap at the time of load change or operation mode transfer. In this paper, a method utilizing the PMU to compensate low frequency ripple current on DC link is studied, which makes much...
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