电工技术学报2018，Vol.33Issue(4)：883-891,9.DOI:10.19595/j.cnki.1000-6753.tces.L70547
基于电流矢量特征分析的逆变器开路故障快速诊断与定位方法
Fast Diagnosis and Location Method for Open-Circuit Fault in Inverter Based on Current Vector Character Analysis
摘要
Abstract
This paper proposes a method of fast fault diagnosis and location for single switch open of three-phase voltage source inverter according to current vector character analysis. The proposed method only uses the output current of three-phase voltage source inverter. Fault diagnosis is carried out regarding the variations of the instantaneous frequency and instantaneous angle of current vector before and after the fault. Fast fault detection is based on the instantaneous frequency change of current vector, while the fault phase is located by combining with instantaneous angle information of current vector, and the fault switch is located by combining with a diagnostic variable based on the average value of the current. At last, the proposed fault diagnosis and location method is verified by simulation. The hardware experimental platform verifies the proposed method can effectively and quickly locate the fault phase and fault switch.关键词
三相电压源逆变器/电流矢量特征/开路故障诊断与定位/瞬时频率/瞬时角度Key words
Three-phase voltage source inverter/current vector character/open-circuit fault diagnosis and location/instantaneous frequency/instantaneous angle分类
信息技术与安全科学引用本文复制引用
陈勇,刘志龙,陈章勇..基于电流矢量特征分析的逆变器开路故障快速诊断与定位方法[J].电工技术学报,2018,33(4):883-891,9.基金项目
国家自然科学基金(51607027),四川省科技支撑计划(2016GZ0395、2017GZ0394、2017GZ0395)和中央高校基本科研业务费专项资金(ZYGX2016KYQD123、ZYGX2016J140)资助项目. （51607027）
