A Robust High-Accuracy Wound Rotor Resolver Proposal with One and Two Pole Pairs

This paper introduces a novel wound rotor resolver characterized by high accuracy and low sensitivity to eccentricity faults, positioning it as a viable absolute position sensor. By adjusting the winding arrangement, this resolver can effectively function in both one and two pole pairs (1-P and 2-P) configurations. In this proposed resolver design, signal windings are intricately wound around a 24-slot stator, while excitation occurs in a 2-slot rotor, with all windings configured toroidally. Its standout features include simplicity, enhanced accuracy, and reduced vulnerability to eccentricity faults, distinguishing it from existing resolver technologies. To simulate this resolver, the Magnetic Equivalent Circuit (MEC) method is employed, known for its adaptability and quicker processing compared to the Finite-Element-Method (FEM). The paper also includes experimental findings validating the resolver’s efficacy. Given the critical importance of precise position sensing in ensuring vehicle safety, this robust sensor emerges as an appealing choice for vehicular applications. Its diminished sensitivity to eccentricity faults further strengthens its utility.