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Development of a three-dimensional magnetic equivalent circuit model for axial flux machines

Alipour-Sarabi, R ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1109/TIE.2019.2934065
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2020
  4. Abstract:
  5. Numerical and analytical methods are two methods to evaluate the performance of electrical machines. This article provides a comparison between numerical and analytical methods. Electrical machine software typically uses numerical methods to solve the electromagnetic equations. On the other hand, analytical methods are faster and more intuitive. A general analytical modeling technique to evaluate the performance of axial flux machines including but not limited to wound rotor resolvers is presented here. The proposed model is based on the actual three-dimensional (3-D) magnetic equivalent circuit (MEC). The accuracy of the proposed model depends on the number of radial layers in the reluctance network of the machine and the time step of simulation. Flux fringing effect, skewed slots, static and dynamic eccentricity, and core magnetization curve are included in the model. Excitation method of the resolver determines the input(s) and output(s) of the algorithm. Both current and voltage excitations are discussed in the article. Finally, the results of the proposed 3-D MEC model under healthy and eccentric (static and dynamic) rotor conditions are compared with the finite-element analysis in terms of computation time and accuracy. The results confirm high-accuracy high-speed performance of the 3-D MEC model. © 1982-2012 IEEE
  6. Keywords:
  7. Eccentricity ; Finite-element method (FEM) ; Magnetic equivalent circuit (MEC) ; Resolver ; Circuit simulation ; Equivalent circuits ; Finite element method ; Magnetic circuits ; Magnetic sensors ; Magnetism ; Numerical methods ; Timing circuits ; Electromagnetic equations ; General analytical model ; High-speed performance ; Magnetic equivalent circuits ; Resolver ; Static and dynamic eccentricities ; Threedimensional (3-d) ; Electric machine theory
  8. Source: IEEE Transactions on Industrial Electronics ; Volume 67, Issue 7 , 2020 , Pages 5758-5767
  9. URL: https://ieeexplore.ieee.org/document/8801880