This study investigates the impact of phase selection strategies on sensorless position estimation for SRMs based on the flux–current method. Two selection methods—current-based and flux linkage-based—were evaluated and compared under various excitation angles and load conditions. Simulation results indicate that the flux linkage-based selection method was effective at the leading-side energization angle for both low and high loads. Conversely, the current-based selection method demonstrated stable estimation accuracy at both the reference and lagging energization angles under both low and high load conditions. These findings provide guidelines for selecting an appropriate phase selection strategy to enhance the performance of sensorless SRM drives.
