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Analytical Modeling and Optimal Design of Outer Rotor Variable Reluctance Resolver

Soleymani, Mohamad Reza | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57568 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Oraee Mirzamani, Hashem; Nasiri Gheidari, Zahra
  7. Abstract:
  8. Position sensors are essential in the control of moving systems. One of these sensors is the Variable Reluctance Resolvers(VR) which are used in the control of permanent magnet motors(PM) due to their simple and robust structure. Variable Reluctance Resolvers can be built in inner/outer stator configuration. Although most commercial Variable Reluctance Resolvers have outer stator and inner rotor configuration, the manufacturing process for inner stator and outer rotor resolvers is much simpler than that of outer stator ones. In this thesis, an analytical model based on the Magnetic Equivalent Circuit(MEC) is initially presented to predict the performance of the outer rotor Variable Reluctance Resolver. The proposed model uses Schwarz-Christoffel mapping to increase the model's accuracy and reduce simulation time compared to the Finite Element Method(FEM). So this model can be utilized for research dependent on repetitive processes. Therefore, the proposed model has been used for dimensional optimization, providing a solution to facilitate the winding process and investigating the impact of eccentricity errors on the accuracy of the outer rotor Variable Reluctance Resolver. Subsequently, optimized outer rotor Variable Reluctance Resolver prototype is built and tested to validate the performance of the proposed analytical model. Finally, to benefit from both high accuracy and absolute position measurement of multi-speed and single-speed resolvers, multi-turn outer rotor Variable Reluctance Resolver is proposed and modeled. The results of the proposed model are validated using finite element analyze
  9. Keywords:
  10. Analytical Modeling ; Magnetic Equivalent Circuit (MEC) ; Eccentricity ; Multi-Turn Resolver ; Schwartz-Christoffer (S-C)Mapping ; Outer Rotor Variable Reluctance Resolver ; Permanent Magnet Machine ; Optimal Design

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