电力系统自动化Issue(3)：30-35,109,7.DOI:10.7500/AEPS20140325016
双馈风力发电机定子电流检测系统容错控制
Fault Tolerant Control for Stator Current Sensor System in Doubly-fed Induction Generator Wind Turbines
摘要
Abstract
To improve the reliability of doubly-fed induction generator(DFIG)wind turbines,a method of stator current sensor fault detection and reconfiguration is proposed.In the synchronous coordinate system with grid voltage oriented control,a stator current observer is established to estimate the actual stator current based on the dynamic model of DFIG and model reference self-adaptive method.By constructing the reference model and the adaptive model,the observed value of stator current can track the actual one in time.In static αβ coordinate system,residual value can be obtained by calculating the difference between the measured and the observed stator current to realize the stator current sensor fault diagnosis.The observed value of stator current can be used in control system to realize stator current sensorless control in case of sensor failure.The observer proposed is independent from the measured stator currents and is robust to the variation of generator parameters.The proposed method can identify the specific source of sensor failure in time when stator current sensor fault occurs and realize fault tolerant control.The correctness and feasibility of the proposed method is validated on a DFIG laboratory platform.关键词
双馈风力发电机/定子电流观测器/模型参考自适应/故障诊断/容错控制Key words
doubly-fed induction generator wind turbine/stator current observer/model reference self-adaptiveness/fault detection/fault tolerant control引用本文复制引用
张学广,陈辉,马彦,马红兵,徐殿国..双馈风力发电机定子电流检测系统容错控制[J].电力系统自动化,2015,(3):30-35,109,7.基金项目
国家自然科学基金资助项目(51107020) （51107020）
台达电力电子科教发展基金。This work is supported by National Natural Science Foundation of China (No.51107020) and Delta S&T Educational Development Program （No.51107020）
