基于MPCC的永磁同步电机驱动系统逆变器IGBT开路故障诊断方法  

MPCC-based Open-circuit Fault Diagnosis Method for the Inverter IGBT of PMSM Drive System

作　　者：原敏昕 尹忠刚[1] 罗培恩 张延庆[1] YUAN Minxin;YIN Zhonggang;LUO Peien;ZHANG Yanqing(School of Electrical Engineering,Xi’an University of Technology,Xi’an 710054,Shaanxi,China)

机构地区：[1]西安理工大学电气工程学院,陕西西安710054

出　　处：《电气传动》2023年第12期25-31,54,共8页Electric Drive

基　　金：国家自然科学基金(52177194,52107206)。

摘　　要：针对永磁同步电机(PMSM)驱动系统逆变器绝缘栅双极晶体管(IGBT)开路故障诊断过程中电流检测法检测时间较长的问题,研究了一种基于模型预测电流控制(MPCC)的误差电流极性法,通过将MPCC中代价函数的变化和电流检测法相结合,可有效缩短故障检测时间。然而,MPCC容易受到电机参数变化的影响,负载转矩、转速的变化可能导致电机参数变化或不匹配,进而影响代价函数的输出,导致误诊。针对该问题,在基于MPCC的误差电流极性法中对故障检测指标进行了归一化处理并加入了计数法,进一步提高了故障诊断的鲁棒性能。To address the problem of the long detection time of the current detection method during the open circuit fault diagnosis of inverter insulated gate bipolar transistor(IGBT)of the permanent magnet synchronous motor(PMSM)drive system,an error current polarity method based on model predictive current control(MPCC)was investigated.By combining the variation of the cost function in MPCC with the current detection method,the fault detection time can be effectively reduced.However,the MPCC is susceptible to changes in motor parameters,the load torque and speed changes may lead to changes or mismatches in the motor parameters,which in turn affect the output of the cost function and lead to misdiagnosis.To address the issue,the fault detection indicators were normalized and a counting method was added to the MPCC-based error current polarity method to further improve the robustness of fault diagnosis.

关 键 词：电机驱动系统 IGBT开路故障 故障检测和定位 模型预测电流控制 

分 类 号：TM28[一般工业技术—材料科学与工程]