摘要
文章针对直驱式永磁风力发电机组极易受到风速和外界环境的干扰,造成系统参数摄动等问题,设计了一种不依赖于准确数学模型、抗干扰能力强且易于实现的风力发电机组变桨距自抗扰控制器。首先,通过理论分析验证了所设计的变桨距自抗扰控制器的稳定性,然后,与传统PI控制进行仿真和试验对比分析。结果表明,在不同风况下,相比传统的PI控制方法,所设计的变桨距自抗扰控制器能够更好地实现风力发电机组的平稳功率输出,可有效抑制极端工况下的转速波动,避免了风机的超速停机,提高了系统的抗干扰能力和鲁棒性,保障了风力发电机组的安全性。
In this paper, aiming at the problem that direct-drive permanent magnet wind turbine is very susceptible to disturbance of wind speed and external environment, which causes system parameter perturbation. A variable pitch ADRC for wind turbine is designed. Firstly, the stability of the variable pitch ADRC is verified by theoretical analysis, and then the simulation and experiment analysis are compared with the traditional PI control. The results show that, compared with the traditional PI control method, the variable pitch ADRC not only can better achieve the stable power output of wind turbines under different wind conditions, but also effectively suppress the speed fluctuation under extreme conditions and avoid the over-speed shutdown of wind turbines, then improve the anti-interference ability and robustness of the system. It guarantees the safety of wind turbine.
作者
郑大周
兰杰
Zheng Dazhou;Lan Jie(Dongfang Electric Wind Power Co.,Ltd.,Deyang 681000,China)
出处
《可再生能源》
CAS
北大核心
2019年第12期1875-1881,共7页
Renewable Energy Resources
基金
四川省重点研发计划项目（2018GZ0012）
关键词
直驱风力发电机组
PI控制
变桨距自抗扰控制器
稳定性
鲁棒性
direct-drive wind turbine
PI control
variable pitch auto disturbance rejection controller
stability
robustness
