A Hall-Based Modified Finite Position Set-Phase Locked Loop for PMSM Control System in EVs

Abstract

This manuscript introduces a hall-based modified finite position set-phase locked loop (HM-FPS-PLL) method designed for the control system of permanent magnet synchronous motors (PMSMs) in electric vehicles (EVs). The innovative aspect of the presented method lies in utilizing hall sensors pre-installed within the motor and a permanent magnet (PM) flux observer, simultaneously increasing the precision of calculation while reducing computational load. In contrast to traditional sensorless methods employing PLL, this method eliminates the dependency on the PI controller. Both simulations and experimental validations have been conducted to confirm the precision and feasibility of the HM-FPS-PLL method.