变速恒频风力发电系统控制方案综述

摘要

In order to meet the requirements of the grid-connection operation of wind power generator, wind power generator system should use variable speed constant frequency (VSCF) control strategy. The advantages of VSCF control strategy was analyzed by comparing with constant speed constant frequency ( CSCF) control strategy, then some main programs of VSCF wind power generator system at home and abroad were presented in detail: squirrel-cage induction generator^AC-excited doubly-fed generator,brushless doubly-feed generator,direct-drive permanent magnet synchronous generator. Finally, a prospect about the development trend of wind power generator was presented.%为满足风力发电机组并网运行的要求,风力发电系统应采用变速恒频控制策略.通过与恒速恒频控制策略进行比较,分析了变速恒频控制策略的优点.详细阐述了国内外主要的变速恒频风力发电系统方案:笼型异步发电机、交流励磁双馈发电机、无刷双馈发电机、直驱式永磁同步发电机.最后对风力发电机的发展趋势进行了展望.