摘要
针对双馈风力发电机组并网电流低次谐波含量较高问题,在对比分析了风电机组低次谐波产生原理及控制方法的基础上,提出了一种基于PR调节器的低次谐波抑制控制算法,文中建立了基于谐波控制的PR控制器的数学模型,并推导出其传递函数,通过对变流器总并网电流进行谐波补偿控制,降低了并网电流中的低次谐波的含量。仿真和实验结果表明,此控制方案具有一定的可行性和优越性。
The doubly-fed wind power generator has disadvantages of include large low harmonics. After analyzes and compares the principle and control method of generating low harmonics, this paper proposes a low harmonic suppression algorithm based proportional resonant（PR） controller; and establishes a mathematical model of PR controller based on harmonic control, deduces the transfer function of harmonic suppression control. The low harmonic content in the grid current is reduced by the control of grid current harmonic compensation. The feasibility and superiority of the scheme are proved by simulation and test results.
出处
《自动化技术与应用》
2017年第1期79-82,118,共5页
Techniques of Automation and Applications
关键词
双馈发电机
低次谐波抑制
比例谐振控制器
doubly-fed wind power generator
low harmonic suppression
proportional resonant controller
