Improved analytical modelling of rotor eddy current loss in brushless machines equipped with surface-mounted permanent magnets

Zhu, Z. Q.; Ng, K.; Schofield, N.; Howe, D.

doi:10.1049/ip-epa:20040546

Cited by 237 publications

(130 citation statements)

References 14 publications

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“…These eddy current losses can be estimated either by a full 3D FEA time-stepping simulation or, alternatively, using a developed rigorous 2-D analytical model which takes into account the eddy-current reaction and skin effect together with suitable end-effect correction factors [14]. These losses are mainly concentrated in the sleeve as shown in Fig.9.…”

Section: Distributed Wound Inset Pmsmmentioning

confidence: 99%

Electrical Machines for High Speed Applications with a Wide Constant-Power Region Requirement

Gerada¹,

Borg-Bartolo²,

Mebarki³

et al. 2012

Journal of international Conference on Electrical Machines and

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-This paper discusses the issues associated with the design of high speed machines for applications with a wide constant-power region requirement. Using described multidomain design environments which put equal weight on the electromagnetic, thermal and mechanical considerations, the suitability and power density achievable using Induction Machines (IM) and Permanent Magnet Synchronous Machines (PMSM) are compared.

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Section: Distributed Wound Inset Pmsmmentioning

confidence: 99%

Electrical Machines for High Speed Applications with a Wide Constant-Power Region Requirement

Gerada¹,

Borg-Bartolo²,

Mebarki³

et al. 2012

Journal of international Conference on Electrical Machines and

View full text Add to dashboard Cite

show abstract

“…While in fractional machines these losses are more significant due to the high harmonic content of the armature field, so they cannot be neglected [4]. In order to make the proposed method usable to both non-fractional and fractional machines, the calculation of the permanent magnet losses is also addressed.…”

Section: Eddy Current Losses In Permanent Magnetsmentioning

confidence: 99%

Matlab-Simulink Coupling to Finite Element Software for Design and Analysis of Electrical Machines

Almandoz¹,

Ugalde²,

Poza³

et al. 2012

MATLAB - A Fundamental Tool for Scientific Computing and Engineering Applications - Volume 2

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“…A machine with a carbon fiber sleeve has been researched [9][10][11], and the influence of carbon fiber on the electromagnetic and temperature fields of the machine was calculated. Kirtley, and Lovelace, and Zhu et al, have tested prototypes with an alloy rotor sleeve [12,13]. Copper plating, has high conductivity, and the advantages of copper sleeves in reducing eddy-current losses was presented [14,15], and the influence of copper layer thickness on rotor eddy-current losses and temperature distribution was analyzed.…”

Section: Introductionmentioning

confidence: 99%

Research on Strategies and Methods Suppressing Permanent Magnet Demagnetization in Permanent Magnet Synchronous Motors Based on a Multi-Physical Field and Rotor Multi-Topology Structure

Lin

et al. 2017

Energies

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Abstract:In this paper, a permanent magnet synchronous motor (PMSM) with sleeves on the rotor outer surface is investigated. The purpose of sleeves is to fix the permanent magnets and protect them from being destroyed by the large centrifugal force. However, the sleeve material characteristics have a great influence on the PMSM, and therewith, most of the rotor eddy-current losses are generated in the rotor sleeve, which could increase the device temperature and even cause thermal demagnetization of the magnets. Thus, a sleeve scheme design with low eddy-current losses is necessary, and a method suppressing the local temperature peak of permanent magnets is presented. The 3-D electromagnetic finite element model of a 12.5 kW, 2000 r/min PMSM with a segmented sleeve is established, and the electromagnetic field is calculated by using the finite element method. The results show the effectiveness of the presented method in reducing the eddy current losses in the rotor. Using the thermal method, it can be found that the maximum temperature position and zone of permanent magnet will change. Thus, some strategies are comparatively analyzed in order to obtain the change rule of the position and zone. The obtained conclusions may provide a useful reference for the design and research of PMSMs.

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Improved analytical modelling of rotor eddy current loss in brushless machines equipped with surface-mounted permanent magnets

Cited by 237 publications

References 14 publications

Electrical Machines for High Speed Applications with a Wide Constant-Power Region Requirement

Electrical Machines for High Speed Applications with a Wide Constant-Power Region Requirement

Matlab-Simulink Coupling to Finite Element Software for Design and Analysis of Electrical Machines

Research on Strategies and Methods Suppressing Permanent Magnet Demagnetization in Permanent Magnet Synchronous Motors Based on a Multi-Physical Field and Rotor Multi-Topology Structure

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