Calculation of eddy current losses in permanent magnets of synchronous machines

Deak, C.; Petrovic, L.; Binder, A.; Mirzaei, Mehran; Irimie, D. L.; Funieru, Bogdan

doi:10.1109/speedham.2008.4581164

Cited by 35 publications

(14 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Deak et al [11] suggest to eliminate the average valueJ e from the calculated current density. Then, just the alternating current density value J e remains J e = J e −J e (8) whereJ e corresponds to Finally, the eddy-current losses could be calculated as follows:…”

Section: B Radial 2-d Fe Simulation With Eddy Currentsmentioning

confidence: 99%

Permanent Magnet Eddy-Current Losses in 2-D FEM Simulations of Electrical Machines

2015

View full text Add to dashboard Cite

The prediction and calculation of eddy current losses occurring in permanent magnets (PMs) of electrical machines is of great interest. Most accurate results are achieved using 3-D finite-element (FE) simulations, which require long computation times and elaborate models. Due to this, 3-D methods are only applied in the final stage of the machine design process. This paper presents different methods to calculate eddy-current losses in PMs by 2-D FE simulations. A radial 2-D FE solver in combination with an axial 2-D FE solver is developed enabling the prediction of the eddy current paths in three dimensions with the associated losses. This approach is applicable to both surface mounted and interior PMs.

show abstract

Section: B Radial 2-d Fe Simulation With Eddy Currentsmentioning

confidence: 99%

Permanent Magnet Eddy-Current Losses in 2-D FEM Simulations of Electrical Machines

2015

View full text Add to dashboard Cite

show abstract

“…I N RECENT decades, IPMSMs have been widely used in high-performance applications, due to their high efficiency and wide speed operation range. However, magnet eddy-current losses affect the efficiency of IPMSMs a lot, especially during flux weakening [1], [2]. Therefore, the studies focused on magnet eddy-current losses for permanentmagnet machines have been very intense in the past few years.…”

Section: B G_armmentioning

confidence: 99%

An Analytical Approach to Magnet Eddy-Current Losses for Interior Permanent-Magnet Synchronous Machines During Flux Weakening

Fan

et al. 2015

IEEE Trans. Magn.

View full text Add to dashboard Cite

This paper presents an analytical approach for evaluating the magnet eddy-current losses of interior permanent-magnet synchronous machines (IPMSMs) during flux weakening. To investigate the magnet eddy-current losses, an analytical method of the time-varying magnetic flux density in the magnet is proposed based on the armature reaction magnetic field analysis. According to the time-varying magnetic flux density, a coefficient is used to evaluate the magnet eddy-current losses during flux weakening. The coefficient can indicate how the major design parameters in an IPMSM affect magnet eddy-current losses during flux-weakening operation. Finite-element analysis was used to validate the proposed model and calculate the magnet eddy-current losses of IPMSM with different design parameters.

show abstract

“…Literature [2][3][4][5] investigate the eddy current loss based on the finite element analysis, especially the influence of segmentation in magnets. But the analyses lack the support of theories and relative analyses are carried out based on the uniformly alternating magnetic field which do not consider the asymmetric distribution and influencing weight of different harmonics.…”

Section: Introductionmentioning

confidence: 99%

Improved Eddy-current Field Loss Model and Scaling Index for Magnets of Permanent Magnet Synchronous Motors

Zhang

Gao

2015

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. The paper gives detailed systematic researches on the mechanism and key factors of eddy-current losses in rotor magnets of high power-density permanent magnet synchronous motors(PMSMs).Firstly, this paper establishes quantitative mathematic model of eddy-current losses for surface-mounted PMSM based on eddy current field model and Maxwell equations. Then, a scaling index is put forward to weigh the key factors relevant to the eddy-current losses in magnets. At the same time, the principles of eddy-current losses in prototype PMSM are analyzed by the finite element analysis (FEA) software. The contents researched in the paper have practical reference values for design and reliability analysis of PMSMs.

show abstract

Calculation of eddy current losses in permanent magnets of synchronous machines

Cited by 35 publications

References 5 publications

Permanent Magnet Eddy-Current Losses in 2-D FEM Simulations of Electrical Machines

Permanent Magnet Eddy-Current Losses in 2-D FEM Simulations of Electrical Machines

An Analytical Approach to Magnet Eddy-Current Losses for Interior Permanent-Magnet Synchronous Machines During Flux Weakening

Improved Eddy-current Field Loss Model and Scaling Index for Magnets of Permanent Magnet Synchronous Motors

Contact Info

Product

Resources

About