摘要
直驱型变速恒频风力发电系统采用低速永磁同步发电机结构,无需齿轮箱,机械损耗小,运行效率高,维护成本低。该系统须采用的大功率变流器单元可以有不同的拓扑结构,根据每种电路拓扑的特点,整个系统的控制方法都会相应地发生变化。文章对直驱型变速恒频风力发电系统基本拓扑结构进行了对比分析,着重分析了常见的中高压变频器主电路拓扑,并对大功率变流器在风力发电系统应用中的可行性进行了相关分析与探讨。
The Direct-Driven variable speed constant frequency （VSCF） wind generation system takes low speed PM generator as the generator, and it has the advantage of no gearbox, low mechanical loss, high efficiency, low maintenance cost. So it has been paid more and more attention. This system needs full scale converter , which has different topological structures of high power converter units in this system. The control methods of the whole system may have corresponding change due to the topological characteristics of each circuit. First, the paper analyzes and compares the basic topologies of direct-driven variable speed constant frequency wind generation system, and gives a comprehensive introduction emphasized on the main circuit topology of common middle/high voltage converter. Then, the feasibility of high power converter applied in wind generation system is analyzed and discussed.
出处
《可再生能源》
CAS
2008年第2期83-86,共4页
Renewable Energy Resources
基金
中国博士后科学基金项目(20060390093)
关键词
风力发电
变速恒频
直驱
中高压变频器
wind generation
variable speed Constant frequency （VSCF）
Direct-Driven
middle/ high voltage converter
