Nonlinear Modeling of Transmission Performance for Permanent Magnet Eddy Current Coupler

Yang, Xiaowei; Liu, Yongguang; Wang, Liang

doi:10.1155/2019/2098725

Cited by 16 publications

(20 citation statements)

References 40 publications

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“…Only under certain parameters, the accuracy of the modified model was high, but if the parameters were changed, such as the air gap thickness was changed, the model precision was reduced. In references [26] [27], inductance characteristics were introduced under constant temperature, and the model accuracy was greatly improved. However, in the industrial transmission system, the transmission condition and the ambient temperature of the PMEC changed greatly, it is impossible to keep the working temperature of the PMEC unchanged.…”

Section: Index Termsmentioning

confidence: 99%

“…Fig. 5 is the B-H curve [27] , and the relative permeability of back iron μb and μF are determined according to the B-H.…”

Section: Influence Of Back Iron Thickness and Heat Loss On Permeabmentioning

confidence: 99%

“…③ is the self-leakage magnetic circuit of the PM. The selfleakage of PM includes end leakage and side edge leakage, end leakage includes inner edge leakage and outer edge leakage [27] . The self-leakage of PM can be expressed as [27]…”

Section: A Electromagnetic Model Of the Pmecmentioning

confidence: 99%

“…Based on Ampere's law, induced eddy current produces induced magnetic field. The dynamic effective magnetic field is formed by the superposition of the induced magnetic field and the static effective magnetic field [26] [27] .…”

Section: A Electromagnetic Model Of the Pmecmentioning

confidence: 99%

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An Improved Analytical Model of Permanent Magnet Eddy Current Magnetic Coupler Based on Electromagnetic-Thermal Coupling

2020

Self Cite

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There is a serious nonlinear between the sensitive parameters and the transmission capacity of the permanent magnet eddy current magnetic coupler (PMEC), and how to establish the accurate analytical model is very important to study its characteristics, optimize design and improve control accuracy. In order to solve the problem that the accuracy of analytical model deteriorates under the variable parameters of the PMEC, based on the electromagnetic-thermal theory, the electromagnetic-thermal nonlinearity of materials, such as the thermal effect of magnetic properties, the thermal effect of permeability, the thermal effect of conductivity, the magnetic saturation effect, the skin effect, the eddy current inductive reactance, have been deeply studied in this paper. On this basis, the multi-field coupling analytical model of the PMEC sensitive parameters and material electromagnetic thermal nonlinearity is established by using the magnetic equivalent circuit theory and lumped parameter thermal network method. Combined with numerical simulation and experiment, the research on electromagnetic characteristics, temperature characteristics and transmission characteristics of the PMEC are carried out. The comparative study shows that the proposed analytical model can accurately analyze the electromagnetic characteristics, temperature characteristics and transmission characteristics of the PMEC without any correction coefficient under different parameters. The accuracy of the analytical model with variable parameters is effectively solved, and the model theory of the PMEC is improved. The accurate analytical modeling method has laid theoretical foundation for the rapid optimization design and wide application of the PMEC.

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Section: Index Termsmentioning

confidence: 99%

“…Fig. 5 is the B-H curve [27] , and the relative permeability of back iron μb and μF are determined according to the B-H.…”

Section: Influence Of Back Iron Thickness and Heat Loss On Permeabmentioning

confidence: 99%

Section: A Electromagnetic Model Of the Pmecmentioning

confidence: 99%

Section: A Electromagnetic Model Of the Pmecmentioning

confidence: 99%

See 2 more Smart Citations

An Improved Analytical Model of Permanent Magnet Eddy Current Magnetic Coupler Based on Electromagnetic-Thermal Coupling

2020

Self Cite

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“…The analytical method of a PMECC is mainly summarized with vector magnetic potential and equivalent magnetic circuit (EMC) methods [9,13]. The former is usually used in a SPM rotor (SPMR), while the latter is more suitable for a special magnetic circuit structure [15][16][17]. has been studied in many works in the literature.…”

Section: Introductionmentioning

confidence: 99%

The Analytical Comparative Analysis of Electromagnetic Characteristics of Four Typical Radial Flux Permanent Magnet Eddy Current Couplers

Huang

Gao

et al. 2021

Energies

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The analytical model of a permanent magnet eddy current coupler (PMECC) is mainly used for evaluation of its characteristics and the initial optimization of design. Based on the equivalent magnetic circuit method, this paper carries out analytical modeling for four typical PMECCs composed of surface-mounted and interior permanent magnet, slotted and non-slotted conductor rotors, which provides a theoretical basis for the subsequent research in this paper. The basic electromagnetic characteristics of the PMECCs are investigated by the established analytical model. Simultaneously, the analytical results about permeance, flux density, torque and power are verified by FEA simulation. The analysis results show that the slotted CR will obtain a much higher power density, and the iron loss mainly exists in the CRs. In addition, the analytical and FEA results agree well, which proves the reliability of the proposed, nearly unified analytical model.

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Mathematical model and experimental study of a magnet coupling with a stop

et al. 2022

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The paper presents an improved analytical model for axial-flux eddy-current couplings with permanent magnets. The design procedure is based on the torque formula derived from a two-dimensional approximation of the magnetic field distribution. The developed model takes into account the heating of the copper disk and magnets due to the high slip speed. Another advantage of the developed model is the reduction in computation time compared to 3-D finite element simulations. The model is validated experimentally. A correlation between the model and the experiment is obtained. The coupling torque is subject to reduction due to low manufacturing accuracy. The model is effective for engineering use at the design stage of magnet couplings, especially for cable drums of cranes.

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Nonlinear Modeling of Transmission Performance for Permanent Magnet Eddy Current Coupler

Cited by 16 publications

References 40 publications

An Improved Analytical Model of Permanent Magnet Eddy Current Magnetic Coupler Based on Electromagnetic-Thermal Coupling

An Improved Analytical Model of Permanent Magnet Eddy Current Magnetic Coupler Based on Electromagnetic-Thermal Coupling

The Analytical Comparative Analysis of Electromagnetic Characteristics of Four Typical Radial Flux Permanent Magnet Eddy Current Couplers

Mathematical model and experimental study of a magnet coupling with a stop

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