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Performance Improvement of Wound-rotor Axial Flux Resolver Considering the Effect of Physical Parameters

Abolqasemi Kharanaq, Fatemeh | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50859 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Nasiri-Gheidari, Zahra
  7. Abstract:
  8. Today, position sensors are inseparable parts of engineering systems. Encoders and resolvers are the most common types of position sensors that are widely used in industries. Due to low price and high accuracy, encoders are the first choice of engineers. Yet, their performance deteriorates under harsh conditions, namely wide temperature range operation, intense vibration and polluted environments. On the contrary, resolvers are rigid and robust which make them resistant to polluted environments.According to principle of operation, resolvers are divided to two main types: variable reluctance (VR) and wound-rotor (WR). Researches has shown that wound rotor resolvers have better performance under common faults of resolvers such as eccentricities. Among different structures of wound rotor resolvers; namely linear, radial flux and axial flux; axial flux wound rotor resolvers (AFWRR) has gained more attention due to their higher stability against static eccentricity.In this thesis, an AFWRR is studied to improve the performance. The thesis can be divided into three sections: analytical modeling, finite element analysis and experimental evaluation. First, an analytical model, based on magnetic equivalent circuit method is derived. Second, validity of the model is approved by the results of finite element analysis. Then, effects of physical parameters on the performance of the resolver is studied. Finally, experimental test on the prototype is used to evaluate the simulation results and developed analytical model
  9. Keywords:
  10. Analytical Modeling ; Magnetic Equivalent Circuit (MEC) ; Three-Dimensional Finite Element Analysis ; Axial Flux Wound Rotor Resolver

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