摘要
储能已成为改善风电场输出功率可控性、提升电网稳定性水平的有效手段.提出了基于平面涡卷弹簧的机械式弹性储能-发电系统方案,针对储能装置中关键零件平面涡卷弹簧建立了力学模型和有限元模型,并进行了有限元应力分析和模态分析,得到了涡簧的扭转变形、横截面上的应力分布、固有频率和前20阶振型.研究成果为储能装置的优化设计、储能密度的计算提供了有力依据,也为弹性储能-发电系统的实现奠定了基础.
The energy storage plays an effective role in improving power output controllability and grid reliability of wind power fields. In this study, a mechanical elastic storage energy and power generation system is proposed using flat spiral springs. By establishing the mechanical and finite element models of flat spiral springs, the finite element stress and modal analyses are conducted. Accordingly, such criteria as torsional deflection, cross-sectional stress distribution, inherent frequency and the first 20-order vibration modes are obtained. Therefore, this approach provides a basis on optimization design for energy storage devices,energy storage calculation and elastic storage energy and power generation system realization.
出处
《中国工程机械学报》
2011年第4期493-498,共6页
Chinese Journal of Construction Machinery
基金
中央高校基本科研基金资助项目
河北省自然基金资助项目(E2009001395)
关键词
储能
平面涡卷弹簧
有限元
应力分析
模态分析
energy storage
flat spiral spring
finite element
stress analysis
modal analysis
