Research on Inter-turn Short-circuit Fault Diagnosis Method Based on High Frequency Voltage Residual for PMSM  

作　　者：Xiaobao Feng Bo Wang Chaohui Liu Jiayun Zeng Zheng Wang 

机构地区：[1]School of Electrical Engineering,Southeast University,Nanjing 210096,China [2]IEEE [3]National New Energy Vehicle Technology Innovation Center(NEVC),Beijing 100176,China [4]Nanjing Engineering Institute of Aircraft System,Aviation Industry Corporation of China,Nanjing 211106,China

出　　处：《CES Transactions on Electrical Machines and Systems》2023年第3期256-265,共10页中国电工技术学会电机与系统学报（英文）

基　　金：supported in part by the Jiangsu Carbon Peak Carbon Neutralization Science and Technology Innovation Special Fund under Grant BE2022032-1;National Natural Science Foundation of China under Grant 52277035, Grant 51937006 and Grant 51907028;the “SEU Zhishan Young Scholars” Program of Southeast University。

摘　　要：Inter-turn fault is a serious stator winding short-circuit fault of permanent magnet synchronous machine(PMSM). Once it occurs, it produces a huge short-circuit current that poses a great risk to the safe operation of PMSM. Thus, an inter-turn short-circuit fault(ITSCF) diagnosis method based on high frequency(HF) voltage residual is proposed in this paper with proper HF signal injection. First, the analytical models of PMSM after the ITSCF are deduced. Based on the model, the voltage residual at low frequency(LF) and HF can be obtained. It is revealed that the HF voltage residual has a stronger ITSCF detection capability compared to the LF voltage residual. To obtain optimal fault signature, a 3-phase symmetrical HF voltage is injected into the machine drive system, and the HF voltage residuals are extracted. The fault indicator is defined as the standard deviation of the 3-phase HF voltage residuals. The effectiveness of the proposed ITSCF diagnosis method is verified by experiments on a triple 3-phase PMSM. It is worth noting that no extra hardware equipment is required to implement the proposed method.

关 键 词：Inter-turn short-circuit fault(ITSCF) Permanent magnet synchronous machine(PMSM) High frequency(HF)injection Voltage residual Fault diagnosis 

分 类 号：TM341[电气工程—电机]