Iron and Magnet Losses and Torque Calculation of Interior Permanent Magnet Synchronous Machines Using Magnetic Equivalent Circuit

We present a faster and simpler approach for the calculation of iron and magnet losses and torque of an interior permanent-magnet synchronous machine (IPMSM) than finite-element methods (FEM). It uses a magnetic equivalent circuit (MEC) based on large elements and takes into account magnetic saturat...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2010-12, Vol.46 (12), p.4073-4080
Main Authors: Tariq, Abdul Rehman, Nino-Baron, Carlos E., Strangas, Elias G.
Format: Article
Language:English
Subjects:
Accuracy
Cross-disciplinary physics: materials science
rheology
efficiency
Equivalent circuits
Exact sciences and technology
Finite element method
Finite element methods
Iron
Magnetic cores
Magnetic flux
magnetic scalar potential
Magnetism
Materials science
Mathematical analysis
Mathematical models
Nonlinearity
Other topics in materials science
permanent magnets
permeability
permeance
Physics
reluctance
Rotors
saturation
Saturation magnetization
Stators
Synchronous machines
Torque
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Summary:We present a faster and simpler approach for the calculation of iron and magnet losses and torque of an interior permanent-magnet synchronous machine (IPMSM) than finite-element methods (FEM). It uses a magnetic equivalent circuit (MEC) based on large elements and takes into account magnetic saturation and magnet eddy currents. The machine is represented by nonlinear and constant reluctance elements and flux sources. Solution of the nonlinear magnetic circuit is obtained by an iterative method. The results allow the calculation of losses and torque of the machine. Due to the approximations used in the formulation of the MEC, this method is less accurate but faster than nonlinear transient magnetic FEM, and is more useful for the comparison of different machine designs during design optimization.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2010.2074207