摘要
对直驱型永磁风电机组并网控制系统工作结构与原理进行讨论,并研究变流器电机侧与电网侧的并网控制电路与控制策略。应用并联多变流器的方法,采取电网电压定向的电流、电压双闭环矢量控制模式,设计逆变并网控制。基于对交-直-交背靠背双PWM变流器的控制,运行软件仿真了690V/2.5MW直驱型永磁风电机组的变流器并网过程。实验结果表明,本文采用的控制电路与策略有效正确,并网变流器能进行双向的能量传递,并且具有良好的静动态特性。
The system working structure and principle of grid-connected control system for direct-drive permanent-magnet wind turbine is discussed, and control circuits and strategy of generator and grid sides are studied. Using multi-parallel connection converters, current based on beamed grid voltage and double-closed-loop vector control mode, the grid inverter control is designed. By controlling the AC-DC-AC double PWM converter, on this basis, a unit generator process of grid-converter for 690V/2.5MW direct-drive permanent-magnet wind turbine is simulated. Experimental results show that the control circuits and strategy is effective and correct, the power can flow from the generator to supply or the reverse direction, the generator control has excellent static and dynamic performance.
出处
《科技通报》
北大核心
2015年第11期168-171,276,共5页
Bulletin of Science and Technology
基金
北京市教委科技计划面上项目(KM201510858004)
北京电子科技职业学院重点课题(YZKB2014008)
关键词
直驱型风电机组
永磁同步发电机
并网
变流器
矢量控制
direct-drive wind turbine
permanent-magnet synchronous generator(PMSG)
grid-connected
converter
vector control
