The effect of winding arrangements on measurement accuracy of sinusoidal rotor resolver under fault conditions

Variable reluctance (VR) resolvers are proposed for industrial applications due to their simple structure. In this paper the effect of different stator windings on position accuracy of the sinusoidal rotor VR resolver under different fault conditions is studied. The effect of pole numbers and winding configuration (concentric or distributed winding) are discussed. The studied faults are static and dynamic eccentricities, run out and short circuit on excitation or signal windings. The analyses are carried out using 3-D time stepping finite element method. Then, the prototype of the sensor as well as its test set up is constructed. Good agreement between simulation and experimental results validate the success of analysis.