Current Signature Modeling of Surface-Mounted PMSM Drives With Current Sensors Faults

This paper presents the closed-form analytical determination of current signature a surface-mounted permanent magnet synchronous motor drive controlled by means field oriented control strategy, when fault occurs in one or more sensors. Both DC offset and gain for all phase sensors are considered. The proposed model includes response loop related gains, eliminating need voltage complicated state estimation. However, approach requires solution an overdetermined system equations. Then new methodology is to save computing time, as alternative classical based on Moore-Penrose pseudoinverse matrix. Experimental results sensitivity analysis parameter variations confirm validity model.