Development of a renewable energy system utilizing vortex induced vibration of a cylinder and principle of leverage aiming for application in deep sea
Development of a renewable energy system utilizing vortex induced vibration of a cylinder and principle of leverage aiming for application in deep sea
复制标题
利用圆柱涡激振动和杠杆原理开发可再生能源系统，旨在深海应用
DOI：
10.1007/s00773-012-0174-1
复制
发表时间：
2012
影响因子：
2.6
通讯作者：
and K. Kokubun
中科院分区：
文献类型：
--
作者：
Y. Nishi;K. Ono;and K. Kokubun
本研究进行了一项实验，以开发一种利用涡激振动(VIV)的可再生能源系统，即使在弱流动条件下也能驱动发电机。在我们的实验装置中，气缸发生涡激振动的平移运动与线性发电机(线圈和磁铁)通过旋转机械连接在一起，这使得我们能够应用杠杆原理，即使作用在气缸上的激励力很小，也能产生电力。测量结果表明，该系统在闭锁和上支路条件下性能最优，且在旋转中心存在一个最佳的电磁力矩杠杆长度。一次(从流动到VIV)和二次(从VIV到电能)能量转换的效率估计表明，一次能量转换的效率不够高。因此，我们提出了几个改进的方向。
This study carried out an experiment to develop a renewable energy system utilizing vortex induced vibration (VIV) that can drive generators even in weak flow conditions. In our experimental setup, the translation motions of a cylinder undergoing VIV and a linear-type generator (coil and magnet) are connected through a rotational machinery, which enables us to apply the principle of leverage, leading to power generation even by small excitation force acting on the cylinder. The measurement shows that the present system performs optimally under the lock-in and upper branch conditions, and that there exists an optimum length of the lever of electromagnetic moment on a center of the rotation. Efficiencies of primary (from flows to the VIV) and secondary (from the VIV to electricity) energy conversions are estimated to show that the primary one is not enough high. We thus propose a few directions to improve it.