Power electronics as grid interface for actively controlled wave energy converters
Power electronics as grid interface for actively controlled wave energy converters
复制标题
电力电子作为主动控制波浪能转换器的电网接口
DOI：
--
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
B. Sørby
中科院分区：
文献类型：
--
作者：
M. Molinas;O. Skjervheim;Pål Andreasen;Tore Undeland;J. Hals;T. Moan;B. Sørby
在欧洲海岸外，海上可再生能源发电的潜力巨大，海上风力发电技术已经变得可行。实现低成本的技术是波能转换器商业化发展的主要关注点。人们普遍认为，为了增加发电量，从而提高经济效益，需要对一次变换进行某种主动控制。此外，如果海上可再生能源的渗透率要达到很高的水平，就会遇到互联互通的障碍。需要识别这些障碍，并研究能够减轻对电力系统稳定性影响的技术。电力电子设备将成为使能接口，允许波浪场充当一个大型发电厂。本文介绍了通过主动控制来最大化波浪发电的已知方法，并讨论了如何通过电力电子控制器作为与电网的接口来实现这些方法。通过对WEC主动控制、功率调节和稳定性的三个案例研究，提出了电力电子接口的三种替代方案。仿真结果表明，电力电子接口在波能转换器的主动控制和网络交互中起着重要的作用。
Off the coasts of Europe, the potential for power generation from offshore renewable energy is huge and the technology for offshore wind power is already becoming available. Achievement of a cost-effective technology is the main concern for commercial development of wave energy converters (WEC). It is widely recognized that some kind of active control of the primary conversion is needed in order to increase the electricity production and hence improve the economical payback. Moreover, if high penetration levels are going to be reached with offshore renewables, barriers to interconnection will be encountered. These barriers need to be identified and the technologies that will mitigate the impacts on the power system stability need to be investigated. Power electronics will be the enabling interface that will permit wave farms to act as one large power plant. This paper presents known approaches for maximizing production from wave power through active control, and discusses how these can be implemented by power electronics controllers used as interface with the power network. Three alternatives of power electronics interface are presented through three case studies for active control of WEC, power conditioning, and stability. Simulation results indicate the role of the power electronic interfaces in the active control of the wave energy converters and in network interactions.