摘要
针对直驱式永磁同步风力发电系统的并网运行,采用空间矢量脉宽调制(SVPWM)算法控制,提高直流侧电压利用率以及系统动态性能,降低谐波含量。在基于传统电网电压定向的双环控制策略基础上,采用基于虚拟电阻的LCL有源滤波环节取代L滤波,提高滤波特性和电流内环的响应速度,降低设备损耗和成本。运用MATLAB/Simulink建立系统的仿真模型对提出的控制策略进行验证,仿真结果表明了控制方案的可行性,系统能够可靠稳定地向电网输送电能。最后基于TMS320F2812 DSP芯片设计了5kW样机系统,实验结果表明系统运行效果良好,能够实现单位功率因数并网。
For the three-phase grid-connected inverters of direct-drive permanent magnet synchronous wind power generation system, using space vector pulse width modulation （ SVPWM ） control algorithm can improve the utilization rate of dc side voltage and the system dynamic performance, and reduce the harmonic content. In the traditional double loop control strategy based on voltage orientation, using LCL active filter based on virtual resistor instead of the traditional L filter can improve the filtering characteristics, and the response speed of the current inner ring, reduce equipment loss and cost. This paper proposed control strategy to make use of MATLAB/Simulink simulation, the results show that the proposed control scheme is feasible and reliable system can reliably transmit electricity to the grid. At last design,a 5 kW prototype based on TMS320F2812 is presented, the experimental results show that the system interconnection effect is good, can realize interconneetion unit power factor.
出处
《信息技术》
2015年第2期42-45,49,共5页
Information Technology
基金
江苏大学高级专业人才专项资助项目(13JDG111)
关键词
直驱式永磁同步风力发电系统
空间矢量脉宽调制
虚拟电阻
LCL有源滤波器
direct-drive permanent magnet synchronous wind power generation system
space vector pulse width modulation
virtual resistor
LCL active filter
作者简介
赵国荣（1985-），男，硕士研究生，研究方向为风力发电并网逆变器控制。
