浮体式波力発電装置の共振特性(機械力学,計測,自動制御)

概要

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This paper examines the resonance characteristics of the wave power generation device, which consists of pulley (s), wire (s), floats (s), counterweight (s) and ratchet mechanism. The resonance analysis model introduces the relative displacement between the water level and the float's position into the dynamics model for the system in operation. The equations of the natural frequency, the ratio of the frequency of water wave to that of the natural frequency, the damping ratio and magnification ratio have also been given. Moreover, the behaviors of the average occurred electric power and maximum wire tension have been examined for wave periods around the natural period of the system. The relationship between the natural period of the system and the float dimensions, especially the float's diameter/height ratio, has been examined. As an example, the annual average occurred electric power and energy conversion efficiency have been evaluated for the system with natural period near dominant wave period when it operates off Kobe port where the annual wave period varies in a relatively narrow range.
2010-01-25