摘要
为提高海上石油开采装置光伏发电设备并网、海上直流输电的稳定性,解决三电平中性点钳位整流器模型预测控制方法在控制过程中存在大量计算、导致系统延时、应用严重受限等问题,采用三电平整流器,利用改进的模型预测控制策略,即针对延时采用重复控制技术对给定电流指令值做出预测。在Matlab/Simulink上,对控制算法进行对比分析,仿真结果显示:该算法能够准提高预测精度以及和采样信号进行同步,在一定程度上解决了过去传统方法中存在的延时问题,验证了所提补偿方法的正确性。
Three-level neutral point clamp rectifier model predictive control method has many problems in controlling process such as massive calculation,system delay,a serious impediment to system application.To improve the stability of grid connection of photovoltaic power generation equipment and offshore DC transmission,an improved model predictive control strategy is adopted to overcome these difficulties.By using repetitive control technology to predict the given current instruction value,this new model improves the prediction accuracy,and gets the control strategy with time delay compensation.Finally,in Matlab/Simulink,the improved model predictive control strategy and the traditional model predictive control strategies are compared to simulation analysis,the simulation results show that the algorithm can accurately and rapidly track the reference current,and solve the delay problem existed in the traditional method,which verifies the validity of proposed compensation method.
作者
田宇
陈经国
TIAN Yu;CHEN Jing-guo(CNOOC Zhanjiang Branch,Zhanjiang 524057,Guangdong,China;School of Automation,Guangdong University of Technology,Guangzhou 510006,Guangdong,China)
出处
《承德石油高等专科学校学报》
CAS
2022年第5期35-41,共7页
Journal of Chengde Petroleum College
关键词
模型预测控制
三电平中性点钳位整流器
延时补偿
重复控制
model predictive control
three-level neutral point clamp rectifier
delay compensation
repetitive control
