CAJ | 학술논문

针对漂浮式波浪能转换装置的能量转换特性问题，以漂浮双浮体直线发电波浪能装置为研究对象，基于线性波理论和粘性阻尼理论，建立了复杂形状波能装置的双自由度受迫振动方程，推导了最佳弹簧和最佳阻尼下波能装置的最佳吸收功率函数表达式和相对位移幅值表达式；基于边界元方法的HydroStar软件计算了复杂形状波能装置水动力学系数和波浪激励力。数值计算表明：在满足装置吸收最大功率的条件下，最佳弹簧系数在一定波况下出现了负值；在无弹簧的最佳阻尼条件下，装置的相对位移幅值小于波幅，波浪能功率和俘获宽度比在给定入射波周期范围内出现峰值。
침대표부식파랑능전환장치적능량전환특성문제，이표부쌍부체직선발전파랑능장치위연구대상，기우선성파이론화점성조니이론，건립료복잡형상파능장치적쌍자유도수박진동방정，추도료최가탄황화최가조니하파능장치적최가흡수공솔함수표체식화상대위이폭치표체식；기우변계원방법적HydroStar연건계산료복잡형상파능장치수동역학계수화파랑격려력。수치계산표명：재만족장치흡수최대공솔적조건하，최가탄황계수재일정파황하출현료부치；재무탄황적최가조니조건하，장치적상대위이폭치소우파폭，파랑능공솔화부획관도비재급정입사파주기범위내출현봉치。
Aiming at the problem of energy conversion characteristics of a floating wave energy conversion ( WEC) device, the double floating linear power generation WEC device was taken as a study object in this paper.The ob-jective was to establish the forced double degree of freedom vibration equation of the complex-shaped WEC, in com-bination with the linear wave theory and viscous damping theory.Next, derive the expressions of the optimally ab-sorbed power and relative displacement amplitudes of the WEC device with the best spring and the damping condi-tions.The hydrodynamic coefficient and wave excitation force of the complex-shaped WEC were calculated using the software HydroStar based on the boundary element method.Numerical calculations indicated that the optimal spring coefficient in a certain wave state becomes negative when the power absorption of the device is maximized.In the conditions of no-spring, the relative displacement amplitudes are smaller than the wave amplitudes and the peak values of absorbed power and capture width ratio appear in the range of given incident waves.