Detection and estimation of high-resistance connection for inverter-fed permanent magnet synchronous machine drives

Abstract

In this paper, a method is proposed for detection and estimation of high-resistance connection (HRC) for permanent magnet synchronous machine (PMSM) derives. The method is based on the relationship between the zero sequence voltage components (ZSVC), the stator currents and the resistance deviation of each phase winding. In the proposed method, the HRC fault detection, fault severity estimation and the identification of the faulty phases are achieved by the calculated resistance deviations. To validate the proposed method, the simulation is performed in the MATLAB/Simulink environment. The results show that the proposed method has high sensitivity to the HRC fault, high accuracy estimation of fault severity and good ability to identify the faulty phases.