一种高效灵活的新型太阳能制氢系统

2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2017-11-01 DOI:10.1109/ICRERA.2017.8191100

Dayi Yamashita, H. Nakao, Y. Yonezawa, Y. Nakashima, Y. Ota, K. Nishioka, M. Sugiyama

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引用次数: 16

摘要

太阳能-氢能转换是一项很有前途的技术，因为它可以实现高容量、长期储存太阳能。我们提出了一种新的高效太阳能-氢转换系统，该系统由多个转换器-电解槽组并联连接到光伏(PV)阵列组成。该系统灵活适用于各种光伏配置。基于测量PV和电解槽特性的一天模拟表明，在晴朗的晴天，最大功率点跟踪(MPPT)效率(高于99.9%)和平均功率转换效率(94.0%)非常高。与使用最好的商业转化器之一的单一转化器系统相比，预计年能源产量将增加8.5%。新型的系统拓扑结构、专门设计的相移全桥变换器和“P&O加变换器评分”控制算法是实现高效率的关键。

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A new solar to hydrogen conversion system with high efficiency and flexibility

Solar-to-hydrogen energy conversion is a promising technology because it enables high-capacity, long-term storage of solar energy. We propose a new highly efficient solar-to-hydrogen conversion system consisting of multiple converter-electrolyzer sets connected in parallel to a photovoltaic (PV) array. This system is flexible to apply to various PV configurations. One-day simulations based on measured PV and electrolyzer characteristics demonstrate very high maximum power point tracking (MPPT) efficiency (higher than 99.9%) and average power conversion efficiency (94.0%) on a clear sunny day. Annual energy production is expected to increase by 8.5%-point compared with a single converter system using one of the best commercial converter. The key elements of the high efficiency are the new system topology, a specially designed phase-shift full-bridge converter and a control method “P&O with converter scoring” algorithm.

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来源期刊

2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)

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