摘要
DFIG的并网技术主要有三种:带独立负载并网、孤岛并网和空载并网。空载并网由于其实现简单,并网时冲击电流小,在风电并网中占有很大的优势。文章根据DFIG的运行特点,提出了基于电网电压定向的空载并网控制策略,根据电机转速和电网电压来调节转子励磁电流,实现了有功和无功解耦控制。
The grid-connection technology of DFIG mainly include：taking independent load grid,island grid and idle load grid-connect.The idle load grid-connect has large advantage in wind power grid,because of operating simply and small impact current in grid-connect.According to the operating characteristics of DFIG,the paper proposes some control strategies of idle load grid-connect.Based on grid voltage orientation,the paper realizes decoupling control of active power and reactive power by controlling motor speed and grid voltage to regulate the rotor excitation current.
出处
《通信电源技术》
2011年第5期50-52,共3页
Telecom Power Technology
关键词
冲击电流
空载并网
电网电压定向
impact current
idle load grid-connect
grid voltage directional
