Stator turn fault is commonly found in variable-frequency PM machine drives which using PWM techniques, and this paper analyzes electromagnetic response of permanent magnet (PM) synchronous machines exposed to this fault under two different stator windings configurations. In this paper, two stator windings are modeled and compared to determine which has better fault tolerant capability. When the machine is operated under turn fault, the windings with separated neutral points (NP's) has lower torque ripple caused by fault reflected flux harmonics. Besides, average torque output is less affected by the turn fault because of decreasing circulating currents in windings. Analytical models based on equivalent circuits are developed to predict the machine flux and torque property. All developed analytical models are verified by the finite element analysis (FEA).