摘要
永磁直驱风电系统变流器为永磁同步发电机和电网的接口,对其常用的拓扑进行了详细的分析和说明,包括不控整流+逆变器、不控整流+DC/DC变换+逆变器、背靠背双PWM变换器等拓扑,对其工作原理、应用和优缺点进行了介绍和对比,并针对风电机组对大功率变流器的需求,对大功率拓扑结构的特性和应用进行了详细的介绍。不控整流+Boost变换+并网逆变器和背靠背双PWM变换器2种拓扑是目前的优选方案,多电平变换器因其优良的性能将具有良好的发展前景。
As the interface between PMSG（Permanent Magnet Synchronous Generator） and grid,the normal converter configurations of direct- drive wind power system with PMSG are analyzed, including the diode rectifier ＋ inverter,the diode rectifier ＋ DC/DC converter ＋ inverter,and the back- to- back dual PWM converter. Their working principles,implementations,advantages and disadvantages aJ：e discussed and compared. The topological characteristics and applications of some high power converters are introduced in detail. The diode rectifier ＋ Boost converter ＋ inverter and the back- to- back dual PWM converter are currently the optimal solutions,and the multilevel converter has a promising prospect for its excellent performance.
出处
《电力自动化设备》
EI
CSCD
北大核心
2008年第4期77-81,共5页
Electric Power Automation Equipment
基金
中国博士后科学基金项目(20060390092)~~
关键词
直驱式风电系统
永磁同步发电机
变速恒频
双PWM变换器
多电平变换器
direct- drive wind power system
permanent magnet synchronous generator
variablespeed constant frequency
dual PWM converter
multilevel converter
