本文關(guān)鍵詞：海洋漂浮式光伏發(fā)電裝置性能研究　出處：《寧波大學》2014年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 浮體 光伏發(fā)電 水動力特性 太陽輻射能 聚光

【摘要】：隨著煤和石油等化石能源的大量使用,環(huán)境和資源問題日趨凸顯,對清潔能源的開發(fā)利用逐漸受到人們的重視。太陽能無污染,儲量巨大,分布廣泛,太陽能光伏發(fā)電是一種較為成熟的清潔能源技術(shù),在獨立及并網(wǎng)電力系統(tǒng)中廣泛應用。海洋中蘊含著豐富的光伏能,海洋環(huán)境下太陽光照強度大,在海洋表面進行光伏能的利用能夠節(jié)省土地使用面積。本文提出了一種海洋漂浮式光伏發(fā)電裝置,研究其在海浪影響下的光伏發(fā)電性能。浮體裝置在海浪作用下運動,必須考慮接收面上太陽輻射能的變化規(guī)律,故首先對海浪影響下浮體的水動力性能和運動特性進行了研究。選取幾種不同形狀和質(zhì)量的浮體,對其進行水動力分析,利用AQWA軟件求取不同浮體的附加質(zhì)量和輻射阻尼隨波頻的變化規(guī)律。由于海水的粘滯效應,將浮體運動軌跡近似為水質(zhì)點運動軌跡的方法研究輕質(zhì)、小尺度浮體的運動規(guī)律。利用AQWA軟件對浮體進行時域運動仿真,得到的結(jié)果顯示在規(guī)則波浪的作用下,浮體做周期性的沉深、水平和角度擺動等運動,其運動特性與浮體本身形狀和質(zhì)量等特性有關(guān)。將靜態(tài)的太陽輻射能計算模型與動態(tài)的浮體角度擺動相結(jié)合,計算海浪影響下浮體表面所接收到的太陽輻射能,將其與相同條件下,以直射角度固定安裝的傾斜面上所接收的太陽輻射能相比較。以一圓柱浮體為例,結(jié)果表明該浮體在海浪影響下表面接收的輻射能能夠達到直射情況下的87.5%,同時所接收的輻射能隨其擺動最大幅度的增大而減小。最后針對浮體運動特性和海浪環(huán)境設(shè)計了復合拋物面聚光器,并對其進行了輻照度分析。結(jié)果表明,在上述浮體的角度擺動幅度下,復合拋物面聚光器能將大部分光線會聚至底部接收面,且由于浮體運動的影響,能夠一定程度解決光伏電池表面局部溫度較高及光伏電池利用效率低等問題。該浮體裝置可以單獨進行光伏發(fā)電,也可以作為浮子式海浪發(fā)電裝置的能量吸收裝置,從而將海浪發(fā)電和光伏發(fā)電通過同一裝置結(jié)合起來實現(xiàn)復合發(fā)電。
[Abstract]:With the extensive use of fossil energy such as coal and petroleum, environmental and resource problems have become increasingly prominent, and the development and utilization of clean energy has been gradually paid attention to. Solar energy has no pollution, huge reserves and wide distribution. Solar photovoltaic power generation is a relatively mature clean energy technology, widely used in independent and grid-connected power systems. The use of photovoltaic energy on the ocean surface can save land use area. In this paper, a floating photovoltaic power generation device is proposed. To study the photovoltaic power generation performance under the influence of the waves, the floating device must take into account the variation of solar radiation energy on the receiving surface when it moves under the influence of the waves. Therefore, the hydrodynamic performance and motion characteristics of the floating body affected by the waves are studied at first, and several kinds of floating bodies with different shapes and masses are selected for hydrodynamic analysis. The variation law of the additional mass and radiation damping with the wave frequency of different floating bodies is obtained by AQWA software. Because of the viscosity effect of seawater, the floating body motion trajectory is approximate to the water quality point motion track method to study the light weight. AQWA software is used to simulate the motion of small scale floating body in time domain. The results show that under the action of regular wave, the floating body moves periodically, such as depth, horizontal and angle swinging. The motion characteristics are related to the shape and mass of the floating body. The static solar radiation energy calculation model is combined with the dynamic floating body angle swing to calculate the solar radiation energy which the wave affects the surface of the floating body. It is compared with the solar radiation energy received on the inclined plane fixed at a straight angle under the same conditions. A cylindrical floating body is taken as an example. The results show that the surface radiation energy of the floating body under the influence of the waves can reach 87.5% in the case of direct fire. At the same time, the received radiation energy decreases with the increase of the maximum swing amplitude. Finally, a composite parabolic concentrator is designed for the motion characteristics of floating body and the ocean wave environment, and the irradiance is analyzed. Under the angle swing amplitude of the floating body, the composite paraboloid concentrator can gather most of the light to the bottom receiving surface, and because of the motion of the floating body. It can solve the problems of high surface temperature and low utilization efficiency of photovoltaic cells to some extent. The floating device can be used to generate photovoltaic power alone. It can also be used as the energy absorption device of the floating wave power generating device, which combines the wave power generation and photovoltaic power generation through the same device to realize the composite power generation.
【學位授予單位】：寧波大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM615

【參考文獻】

相關(guān)期刊論文 前2條

1 金振逸;馬少杰;;基于線性波浪理論的海上浮動平臺受力及運動分析[J];四川兵工學報;2011年08期

2 韓斐;潘玉良;蘇忠賢;;固定式太陽能光伏板最佳傾角設(shè)計方法研究[J];工程設(shè)計學報;2009年05期

相關(guān)碩士學位論文 前1條

1 孫玉偉;船用太陽能光伏發(fā)電系統(tǒng)設(shè)計及性能評估[D];武漢理工大學;2010年

，

本文編號：1423507