孤岛多逆变器并联传感器故障诊断策略  

SENSOR FAULT DIAGNOSIS FOR MULTIPLE PARALLEL INVERTERS IN ISLANDING OPERATION

作　　者：游国栋[1] 徐涛 沈延新 高洪森[2] 侯晓鑫 李继生[1] You Guodong;Xu Tao;Shen Yanxin;Gao Hongsen;Hou Xiaoxin;Li Jisheng(College of Electronic Information and Automation,Tianjin University of Science&Technology,Tianjin 300222,China;Tianjin Lishen Battery Joint-stock Co.,Ltd.,Tianjin 3000384,China)

机构地区：[1]天津科技大学电子信息与自动化学院,天津300222 [2]天津力神电池股份有限公司,天津300384

出　　处：《太阳能学报》2020年第9期86-94,共9页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(60771014);天津市重点研发计划(17YFZCNC00230);天津市应用基础与前沿技术研究计划(自然科学基金)重点项目(13JCZDJC29100)。

摘　　要：针对微电网孤岛运行模式下多逆变器并联系统的非线性特性,构建孤岛模式下的多逆变器并联的非线性T-S(Takagi-Sugeno)模糊模型,对不确定性及传感器故障进行重构,进而提出一种新的T-S模糊故障容错控制方法,该方法使用分布补偿概念设计一个基于T-S模型的状态观测器,产生对故障具有敏感性的残差,对多逆变器并联中存在的故障信息实行有效检测和隔离。结合控制分配律,设计一个基于固定控制分配方案的T-S模糊容错控制器,通过Lyapunov和泰勒级数推导系统保持稳定的充分条件,仿真实验验证了所提控制算法的有效性。To address the nonlinear features for distributed microgrid multiple parallel-connected inverters system under islanding operation,the T-S fuzzy control model is structured,and mathematical models under uncertainty and sensor fault are restructured,and then a novel T-S fuzzy fault tolerant control technique is proposed. The observer based on T-S fuzzy fault tolerant control method that the concept of general-distributed compensation is used is proposed. In order to generate residues sensitive to faults,then fault informations in parallel connection of multiple inverters are effectively detected and insulated. The T-S fuzzy tolerant control strategy is structured by combining control principle,the stability conditions for photovoltaic system fault is pulled and the stability of the closed loop system is ensured by Lyapunov. The effectiveness of the proposed approach is verified through simulation.

关 键 词：孤岛运行 逆变器并联 故障诊断 容错控制 

分 类 号：TM464[电气工程—电器]