Oscillating water column (OWC) devices and oscillating buoys (OBs) are two of the main types of wave energy converters (WECs). In this paper a hybrid oscillating water column-oscillating buoy wave energy converter is proposed, which we have named OWCOB. The oscillating buoy is hinged at the outer wall of the oscillating water column. As waves propagate through the OWCOB, the water column within the OWC chamber moves up and down, producing air flow to propel a turbine. Meanwhile, the oscillation of the OB drives a separate hydraulic system. To solve the wave diffraction and radiation problems of the OWCOB and investigate its energy capture performance, an analytical model is developed based on linear potential flow theory and the eigenfunction matching method. Assuming that the PTOs of the OWC and OB are both linear, the wave power extraction of the OWCOB is evaluated in the frequency domain. Of the two configurations considered, the OWCOB with the OWC opening waveward and the OB hinged leeward is found to have a broader primary frequency band of wave power capture compared to the OWCOB with the OWC opening and the OB on the same side. Further, a thorough sensitivity analysis of power capture is carried out considering the main design parameters (size and submergence of the OWC opening, distance between the OWC and the OB, OB hinge elevation, OB radius), which can form the basis of an optimization study for a particular wave climate. Importantly, we find that the OWCOB performs generally better than stand-alone OWCs and OBs, not least in terms of frequency bandwidth.

振荡水柱（OWC）装置和振荡浮标（OB）是波浪能转换器（WEC）的两种主要类型。本文提出了一种混合振荡水柱振荡浮标波能量转换器，我们将其命名为OWCOB。振荡浮标铰接在振荡水柱的外壁上。当波传播通过OWCOB时，OWC腔室内的水柱上下移动，产生气流以推动涡轮机。同时，OB的振动会驱动单独的液压系统。为了解决OWCOB的波衍射和辐射问题并研究其能量捕获性能，基于线性势流理论和本征函数匹配方法建立了解析模型。假设OWC和OB的PTO都是线性的，OWCOB的波功率提取在频域中进行评估。在考虑的两种配置中，与OWC开口和OB在同一侧的OWCOB相比，OWCB的OWC开口向波且OB铰接的背风向后发现具有更宽的主波捕获频段。此外，还应考虑主要设计参数（OWC开口的尺寸和浸入度，OWC与OB之间的距离，OB铰链标高，OB半径）进行彻底的功率捕获灵敏度分析，这可以作为优化的基础研究特定的波浪气候。重要的是，我们发现OWCOB的性能通常比独立的OWC和OB更好，尤其是在频率带宽方面。与带OWC开口和OB的同侧OWCOB相比，带OWC开口的OWCOB朝上且OB铰接背风的OWCOB具有更宽的主波捕获频段。此外，还应考虑主要设计参数（OWC开口的尺寸和浸入度，OWC与OB之间的距离，OB铰链标高，OB半径）进行彻底的功率捕获灵敏度分析，这可以作为优化的基础研究特定的波浪气候。重要的是，我们发现OWCOB的性能通常比独立的OWC和OB更好，尤其是在频率带宽方面。与带OWC开口和OB的同侧OWCOB相比，带OWC开口的OWCOB朝上且OB铰接背风的OWCOB具有更宽的主波捕获频段。此外，还应考虑主要设计参数（OWC开口的尺寸和浸入度，OWC与OB之间的距离，OB铰链标高，OB半径）进行彻底的功率捕获灵敏度分析，这可以作为优化的基础研究特定的波浪气候。重要的是，我们发现OWCOB的性能通常比独立的OWC和OB更好，尤其是在频率带宽方面。考虑到主要设计参数（OWC开口的尺寸和浸入度，OWC与OB之间的距离，OB铰链标高，OB半径）进行了功率捕获的彻底灵敏度分析，这可以作为优化研究的基础特定的波浪气候。重要的是，我们发现OWCOB的性能通常比独立的OWC和OB更好，尤其是在频率带宽方面。考虑到主要设计参数（OWC开口的尺寸和浸入度，OWC与OB之间的距离，OB铰链标高，OB半径）进行了功率捕获的彻底灵敏度分析，这可以作为优化研究的基础特定的波浪气候。重要的是，我们发现OWCOB的性能通常比独立的OWC和OB更好，尤其是在频率带宽方面。