光伏海浪复合发电装置浮体形状研究

Research on Floating Body Shape of Photovoltaic-Wave Hybrid Power Generation Device

基于水上光伏发电和海浪发电技术,提出了一种浮子式光伏海浪复合发电方案。首先分析浮体在海浪中的运动特性及角度摆动规律,将浮体的沉升运动和角度摆动以简谐形式表达,然后结合倾斜表面上太阳辐射能的计算模型和浮体捕获海浪能计算模型,得出浮体的沉升运动为影响浮体捕捉海浪能的主要因素,并采用水动力仿真软件AQWA仿真分析了四种不同形状浮体在海浪中的运动特性。结果表明,圆柱形底浮体的沉升速度幅值和角度摆动幅值均最小,说明海浪对其运动状态影响最小;锥形底浮体的摆动角度较大,对浮体表面光照性能的影响较大;平底锥形和球面形底的浮体沉升速度较大,摆动角度相对较小,适合作为光伏海浪复合发电装置的浮体。

The method of photovoltaic-wave hybrid power generation had been developed based on the current offshore photovoltaic and ocean wave energy generation technologies.Firstly,the dynamic features and swinging patterns of the hybrid generation floating body were analyzed.Thus the heaving and swinging of the floating body could be formulated by harmonic pattern.According to the model of solar irradiation on the tilt plane and the model of the ocean wave energy captured by the floaters in the ocean,it concluded that the floater＇s heaving was the major factor for affecting the absorbed wave energy.The hydrodynamics of four different shapes of floaters were analyzed by using the hydrodynamic simulation tool AQWA.The simulation results show that the amplitudes of heaving and swinging of cylinder-bottom floater were the minimum values;the cone-bottom floater＇s swinging amplitude was relatively larger;the flat-bottom and sphere-bottom floater＇s swinging amplitudes were smaller while their heaving was relatively larger.Therefore,the conebottom and sphere-bottom floaters should be chose for the photovoltaic-wave hybrid power generation device.