Magnetic Equivalent Circuit Modelling of Synchronous Reluctance Motors

Rekha Jayarajan, Nuwantha Fernando, Amin Mahmoudi and Nutkani Ullah
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Rekha Jayarajan: School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
Nuwantha Fernando: School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
Amin Mahmoudi: College of Science and Engineering, Flinders University, Adelaide, SA 5042, Australia
Nutkani Ullah: School of Engineering, RMIT University, Melbourne, VIC 3000, Australia

Energies, 2022, vol. 15, issue 12, 1-13

Abstract: This paper proposes a modelling technique for Synchronous Reluctance Motors (SynRMs) based on a generalized Magnetic Equivalent Circuit (MEC). The proposed model can be used in the design of any number of stator teeth, rotor poles, and rotor barrier combinations. This technique allows elimination of infeasible machine solutions during the initial machine sizing stage, resulting in a lower cohort of feasible machine solutions that can be further optimized using finite element methods. Therefore, saturation effects, however, are not considered in the modelling. This paper focuses on modelling a generic structure of the SynRM in modular form and is then extended to a full SynRM model. The proposed model can be iteratively used for any symmetrical rotor pole and stator teeth combination. The developed technique is applied to model a 4-pole, 36 slot SynRM as an example, and the implemented model is executed following a time stepping strategy. The motor characteristics such as flux distribution and torque of the developed SynRM model is compared with finite elemental analysis (FEA) simulation results.

Keywords: electric machine modelling; magnetic equivalent circuit; finite element analysis; nodal analysis; synchronous reluctance motor; air-gap flux; permeance network (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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