中文摘要：

将液压传动应用于波浪能转换装置，并提高能量转换稳定性及转换效率是波浪能开发的热点。文中介绍了基于液压传动的独立浮力摆式波浪能发电系统的结构及工作原理，分析了通过蓄能器、负载控制及变量液压马达排量控制提高系统能量俘获效率及能量输出稳定性的原理。在联合仿真环境下建立了系统整机模型进行计算机仿真，然后进行了半物理试验仿真。计算机和半物理试验仿真的结果表明，基于所述调控原理的浮力摆式波浪能发电系统的能量转换效率及能量输出稳定性得到了提高，验证了调控原理的正确性。

英文摘要：

The application of hydraulic transmission in wave power converter （WEC） to improve the efficiency and stability of energy conversion is a hot topic in the development of wave power generation technologies. The structure and the working principle of an independent inverse-pendulum wave power generation system based on hydraulic transmission are introduced. The principles of using accumulators, load-control and displacement control to improve the capture efficiency and the output stability of energy are also analyzed. A simulation model of the whole system is built in the co-simulation environment. Furthermore, a semi-physical test is done. The results validated the theoretical analysis and provided basis for further improvement of the system. This work is supported by Post-doctoral Science Foundation of China （No. 20110491779）, National Natural Science Foundation of China （No. 51205346）, Zhejiang Provincial Natural Science Foundation of China （No. LY12E05017）, and Zhejiang Provincial Public Welfare Technology Research Project （No. 2011C21063）.