摘要
为提高双馈风力发电并网控制器的控制性能,针对传统PI控制跟踪慢、误差大、稳态性不好的弊端,结合双馈风力发电并网控制器的数学模型,提出一种基于指数趋近律的滑模变结构控制策略对网侧PWM变换器控制进行系统性研究,并和传统PI控制策略进行对比。仿真结果表明:基于指数趋近律的滑模变结构控制策略不仅简化了控制结构,而且提高了系统的响应速度,对于直流母线电压的稳定具有一定的有效性和可靠性。
In order to improve the control performance of double fed wind power generation controller,aiming at the drawbacks of traditional PI control,tracking error,slow steady state is not good,according to the mathematical model of doubly fed wind power generation controller,a variable structure control strategy is used to make a systematic study of the grid side PWM converter with sliding mode control based on exponential approach law,and it is compared with the traditional PI control strategy. The simulation results show that the variable structure control strategy not onlysimplifies the structure of sliding mode control based on exponential approach law,and improve system response speed,which has a certain validity and reliability for the stability of the DC bus voltage.
作者
刘伟
居鑫
王日中
周于杰
石成骜
LIU Wei;JU Xin;WANG Rizhong;ZHOU Yujie;SHI Chengao(College of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China;Research Center of Engineering Technology for Energy Intereonneetion Intemet of Chongqing, Chongqing 400054, China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2018年第3期227-235,共9页
Journal of Chongqing University of Technology：Natural Science
基金
国家自然科学基金资助项目(51607020)
关键词
双馈风力发电
PWM变换器
PI控制
滑模变结构
doubly fed wind power generation
PWM converter
PI control
sliding mode variable structure
