Experimental Evaluation of a High Speed Flywheel for an Energy Cache System
Experimental Evaluation of a High Speed Flywheel for an Energy Cache System
复制标题
能量缓存系统高速飞轮的实验评估
DOI：
10.1088/1757-899x/21/1/012012
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
T. Homma
中科院分区：
文献类型：
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作者：
J. Haruna;K. Murai;J. Itoh;N. Yamada;Y. Hirano;T. Fujimori;T. Homma
飞轮能量缓存系统（FECS）是一种机械电池，可以通过将电能转换为旋转飞轮的动能来充电/放电，反之亦然。与化学电池相比，FECS 在耐用性和寿命方面具有巨大优势，尤其是在炎热或寒冷的环境中。进行了 FECS 的设计模拟，以阐明飞轮转子的成分和尺寸对充电/放电性能的影响。飞轮的转速受到其制造材料的强度的限制。研究了碳纤维增强聚合物（CFRP）、铬钼钢和镁合金三种材料的 3 MJ（0.8 kWh）充电/放电能量所需的重量和转速，该能量适用于连接到智能电网的普通家庭中使用 3-5 kW 光伏设备运行的 FECS。结果表明，对于固定式 3 MJ FECS，Cr-Mo 钢是最具成本效益的，但也是最重的，镁合金具有良好的旋转速度和重量平衡，这应减少机械损耗并提高系统的耐用性和寿命，而 CFRP 应用于需要紧凑性和更高能量密度的应用。最后，对高速原型FW进行了分析，以评估其在加速和稳态下的基本特性。
A flywheel energy cache system (FECS) is a mechanical battery that can charge/discharge electricity by converting it into the kinetic energy of a rotating flywheel, and vice versa. Compared to a chemical battery, a FECS has great advantages in durability and lifetime, especially in hot or cold environments. Design simulations of the FECS were carried out to clarify the effects of the composition and dimensions of the flywheel rotor on the charge/discharge performance. The rotation speed of a flywheel is limited by the strength of the materials from which it is constructed. Three materials, carbon fiber-reinforced polymer (CFRP), Cr-Mo steel, and a Mg alloy were examined with respect to the required weight and rotation speed for a 3 MJ (0.8 kWh) charging/discharging energy, which is suitable for an FECS operating with a 3–5 kW photovoltaic device in an ordinary home connected to a smart grid. The results demonstrate that, for a stationary 3 MJ FECS, Cr-Mo steel was the most cost-effective, but also the heaviest, Mg-alloy had a good balance of rotation speed and weight, which should result in reduced mechanical loss and enhanced durability and lifetime of the system, and CFRP should be used for applications requiring compactness and a higher energy density. Finally, a high-speed prototype FW was analyzed to evaluate its fundamental characteristics both under acceleration and in the steady state.
DOI：
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发表时间：
2022
期刊：
影响因子：
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作者：
S. Kuki;Y. Takahashi;S. Sonoda;K. Nakamura;T. Takao;O. Tsukamoto
通讯作者：
O. Tsukamoto