Japan STA Program: Optimal Control of Floating Wave Energy Converters

Korde 9703749 该奖项支持Umesh Korde博士在日本横须贺的日本海洋科学技术中心（JAMSTEC）获得为期24个月的科学技术署（STA）博士后研究金。 Korde博士将与高级研究工程师Yukihisa Washio博士一起研究一个名为“浮动波浪能设备的最佳控制”的研究项目。" 在过去的二十年里，已经开发了各种类型的设备来吸收波浪能，近岸浅水设备更容易安装和维护。 然而，研究人员目前面临的实际问题是如何开发在更深的沃茨中吸收增加的可用波浪能量的应用。 大多数设备的主要组成部分是初级能量转换器，这是一种响应波浪振荡并通过涡轮发电机或泵的往复运动将这些振荡转换为旋转的技术。 在浮动装置上，通常使用浮动船体作为参考来发生初级转换器运动，这是降低能量转换效率的过程。 如果能在船体上提供一个主动控制的主体，作为一个稳定的参照系，将产生重大的改进。本研究的主要目标是开发这样一个系统。 第二个目标是开发一种时域控制方法，该方法在逐波的基础上调整初级转换器动态，以优化不规则波中吸收的能量。 ***

Korde 9703749 This award supports a 24 month Science and Technology Agency (STA) Postdoctoral Fellowship for Dr. Umesh Korde at the Japan Marine Science and Technology Center (JAMSTEC), Yokosuka, Japan. Dr. Korde will work with Dr. Yukihisa Washio, Senior Research Engineer, on a research project entitled, "Optimal Control of Floating Wave Energy Devices." Over the last two decades, various types of devices have been developed to absorb wave energy, with near-shore, shallow-water devices being far easier to install and maintain. The practical problem currently confronted by researchers, however, is how to develop applications that absorb increased available wave energy in deeper waters. The principal component of most devices is the primary energy converter, a technique that oscillates in response to the waves and converts these oscillations into revolutions via a turbogenerator or reciprocations of a pump. On floating devices, the primary converter motion normally occurs using the floating hull as a reference, a process that reduces the energy-conversion efficiency. Significant improvements would result if one could provide on board the hull an actively controlled body which serves as a steady frame of reference. The primary goal of the proposed research is to develop such a system. The secondary goal is to develop a time-domain control method that adjusts the primary converter dynamics on a wave-by-wave basis to optimize the energy absorbed in irregular waves. ***