以船體運動為基礎之新式波浪獵能系統研究

THE RESEARCH ON THE NEW TECHNIQUE OF HARVESTING WAVE ENERGY BASED ON THE SHIP MOTIONS

本研究使用平板型線性發電機的概念發展一套利用船舶運動的新式波浪能獵能系統，用以擷取由波浪能造成的船體運動能量，再將此動能轉換成電能。本研究首先以船舶非線性六度運動方程式分析不同海況下的時程領域船體運動，以此為基礎之下，利用動力學以及四階朗奇庫塔數值方法計算動子之瞬時加速度、速度以及位移，搭配法拉第原理以及二維有限元素軟體求解方程式中的磁通密度變化率，計算出不考慮摩擦力時的理想感應電動勢，進一步推算可能的功率輸出。本研究另外也實際完成一套獵能系統模型，以六軸船體運動模擬平台為實驗載具，此平台可依船體運動程式所計算的瞬時縱搖或橫搖角度進行作動，同時於作動過程中量測線圈的感應電壓，最終計算出實驗的功率輸出。本波浪獵能系統具有體積小、製造技術容易等優點，且可模組化安裝，亦可延伸應用在沿海養殖漁業的輔助電力的新選擇。 The present research applies the concept of flat linear generator to develop a wave energy harvester which iscaused by the ship motion in waves. The device can harvest the energy due to the ship motion in wave and turn themotion energy into electricity. The concept offers another different choice for green energy. The paper uses the 4thRunge Kutta method to simulate the ship’s motion and the mover’s acceleration, velocity and displacement are alsocalculated without considering the friction on the slope plane. By combining the Faraday’s Law and the mover’smotion, we can get the EMF from the wire in six different conditions. Also, we use the 2-D FEM program to solve theflux density per meter. Thus, we can obtain the EMF and calculate the system’s power. Moreover, we create a realharvester system model and take the platform base manipulator to simulate the ship motion in wave to measure thevoltages and eventually we can calculate the power of the model device. The wave energy harvester has the advantageof small-size, manufacturing and modularization, which can also be extended to assist the power supply of the fisherypurpose.