波浪能装置液压式蓄能系统设计  

Design on Hydraulic Energy Storage System of Wave Energy Converters

作　　者：张亚群[1] 盛松伟[1] 游亚戈[1] 吝红军[1] 张超[1,2] 

机构地区：[1]中国科学院广州能源研究所、中国科学院可再生能源重点实验室,广东广州510640 [2]中国科学院大学,北京100049

出　　处：《机床与液压》2016年第5期117-121,共5页Machine Tool & Hydraulics

基　　金：国家自然科学基金青年基金资助项目(41406102);海洋可再生能源专项资金资助项目(GHME2013ZB01)

摘　　要：蓄能系统是漂浮式波浪能装置液压式能量转换系统中的储能环节。以漂浮式波浪能装置液压式能量转换系统为研究对象,介绍了液压式能量系统中的蓄能系统的组成,分析了该系统在大浪下实现稳定发电和小浪时实现0-1发电的原理,建立了预充压力、最低工作压力和最高工作压力、蓄能量几个关键设计参数之间的数学模型,通过计算实例进行数值模拟,获得了大量试验数据。试验结果表明:最高工作压力与最低工作压力在数值上差越大,蓄能系统单个循环释放出的蓄能越多,蓄能系统的成本越低;设计的预充压力安全值为最低工作压力的80%;蓄能量与最高工作压力、最低工作压力、预充压力之间存在耦合关系。The energy storage system is the key energy storage process of hydraulic power take-off system in a floating wave energy converter( WEC).The components of an energy storage system which is in a floating WEC was introduced,and the principle stable power generation under the huge wave and 0-1 power generation under small wave were analyzed.A mathematical model about a couple of key design parameters including filling pressure,minimum working pressure,maximum working pressure and energy storage value was set up.Numerical simulations were carried on by calculating examples,and a large number of experimental data were obtained.The experiment results show that the lager the difference between the maximum and minimum pressure,and the energy is released in a single cycle,the lower the cost of the energy storage system is.The design safety value of the precharge pressure is 80% of minimum working pressure.There is a coupling relationship between the four key parameters,such as the energy storage value,the maximum working pressure,the minimum working pressure and the precharge pressure.

关 键 词：波浪能装置 液压式能量转换系统 蓄能系统 蓄能器 

分 类 号：TH322[机械工程—机械制造及自动化]