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Line-interactive UPS using a fuel cell as the primary source
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DOI：10.1109/TIE.2008.918472.png)
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摘要
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This paper proposes a line-interactive fuel-cell-powered uninterruptible-power-supply system. A three-port bidirectional converter connects a fuel cell and a supercapacitor to a grid-interfacing inverter. The system can operate in both stand-alone and grid-connected modes. Moreover, an active filtering function is integrated into the system. It is shown that a supercapacitor can serve as both an active and a reactive energy storage and can buffer the periodical low-frequency ripple in the requested power. For connecting the system to the utility grid, a high-performance single-phase phase-locked loop that incorporates an orthogonal filter is presented. Resonant controllers for both the voltage and current regulations eliminate steady-state error and implement selective harmonic compensation. Simulation and experimental results are provided to show the feasibility of the proposed system and the effectiveness of the control methods.
Keyword:
active filters
fuel cells
supercapacitors
uninterruptible power systems
期刊
IF:
7.2
论文数:
1.8W
被引数:
9.8W
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An electrochemical-based fuel-cell model suitable for electrical engineering automation approach适用于电气工程自动化方法的基于电化学的燃料电池模型
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