Seongsik Yoon, Wonmook Choi, Taekue Kim, Seungkyu Park, Taesung Yoon, Hokyun Ahn, and Kunpyoung Kwak
Grid connected inverter, Current ripple
This paper shows a two-stage inverter which is a combination of DC-DC converter and DC-AC inverter with a high frequency transformer to obtain high voltage from lower voltage of fuel cell. PLL(Phase Lock Loop) and MPPT(Maximum Power Point Tracking) control are needed for grid connection. An improved MPPT control is proposed to achieve the more efficient fuel cell system by minimizing current ripples.
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