Experimental Analysis of the Current Sensor Fault Detection Mechanism Based on Cri Markers in the PMSM Drive System

Abstract

Featured Application: The detection system described in the paper can be successfully implemented in industrial drive systems with PMSM motors in order to increase their safety. The natural area of application of FTC (Fault Tolerant Control) systems are electric vehicle drive systems, including electric and hybrid aircraft drive systems. In this paper the current sensor fault detector for the permanent-magnet synchronous motor drive system has been presented. The solution is a known method used for induction motor drive systems, tested by authors in simulation for the PMSM drive system. The application is based on the current markers, which enable not only failure detection, but also the location of said failures. Detector operation is based only on the analysis of measurements from current sensors and does not require additional information about other state variables. The aim of the work is to present simulation and experimental studies in field-oriented control (FOC) for the tested current sensor fault detector for various operating conditions of the drive system—variable speed and load.