An Improved Observer for Flux & Speed Estimation of Sync-Rel Motor for Electric Vehicles with Solar PV Support

Reducing the number of sensors is a key part of electric vehicle (EV) drives that use synchronous reluctance (Sync-ReI) motor. This helps to make the system more reliable and stable. Nevertheless, getting sensorless control to work smoothly across a wide speed range is still a significant task. This paper presents the improved second-order SOGI-FLL-based flux observer for speed sensorless control of Sync-ReI motor. In contrary to the other approach for estimating stator flux linkage, this one provides more accurate speed estimates. The drive's sluggishness is reduced at both low and high speeds attributed to better speed and position estimation. This paper also addresses the augmented performance of the battery for the driving range. The presented system's performance is thoroughly examined and validated in MATLAB/Simulink.