Learning Observer Based Sensor Fault-Tolerant Control of Distributed Grid-Connected Inverter
作者单位：School of Electrical EngineeringNantong University
会议名称：《第40届中国控制会议》
会议日期：2021年
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 080202[工学-机械电子工程] 08[工学] 0835[工学-软件工程] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
关 键 词：Distributed grid-connected inverter Fault-tolerant control Sensor fault Learning observer Fault reconstruction
摘 要：In order to improve the operating performance and reliability of the distributed grid-connected inverter,for the robust control of the system with sensor faults and uncertain disturbances,a fault-tolerant control strategy is proposed Firstly,the strategy adopts the output feedback control theory and the linear matrix inequality LMI algorithm,so it can design the inverter PQ power tracking closed-loop feedback control ***,considering the current sensor fault,it analyzes and derives the augmented fault model of the control *** constructing a fault-tolerant control structure,which is based on the fault output signal conversion filter and PD-type learning observer,the online reconstruction and realtime compensation of fault signals are ***,the system integration of output feedback control and fault-tolerant control is ***,using multi-fault scenario simulation,it verifies that the proposed control strategy achieves good effect of PQ power tracking control,and the sensor fault tolerance is strong.