Performance Study of Hybrid Magnetic Coupler Based on Magneto Thermal Coupled Analysis

Wang, Shuang; Guo, Yongcun; Cheng, Gang; Li, Deyong

doi:10.3390/en10081148

Cited by 14 publications

(16 citation statements)

References 13 publications

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“…Traditional mechanical drilling has the disadvantages of low drilling efficiency, high drilling cost, and large bit wear in the processes of deep drilling, ultra-deep drilling, and hard rock drilling. At the same time, the construction methods of rapid excavation and tunneling in medium-hard rock and hard rock, such as drilling and blasting method and full-face hard rock tunneling, have shortcomings, such as high consumption costs and stricter requirements on geological conditions [2]. It is, therefore, an imperative to study high-efficiency rock-breaking drilling technology.…”

Section: Introductionmentioning

confidence: 99%

Damage Model and Numerical Experiment of High-Voltage Electro Pulse Boring in Granite

Duan

Tan

et al. 2019

Energies

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High-voltage electro pulse boring (EPB) has the advantages of high rock-breaking efficiency and good wall quality, and is a new and efficient potential method of rock breaking. The EPB process is defined as random because it is affected by many factors. At present, there is no suitable physical and mathematical model to describe the process and results of rock breakage in EPB, and the conclusions reached regarding rock-breakage mechanisms are not uniform. In this study, a complete damage model of high voltage EPB in granite is established, which includes a shock wave model and a damage model of high voltage EPB in granite. The damage model is based on the Particle Flow Code two-dimensional program. Use of a damage model of EPB accommodates the complete process of high voltage EPB, from discharge to production of a shock wave, and so rock-breaking via electro pulse can be simulated and calculated. The time-varying waveforms of shock waves with different electrical parameters are simulated and calculated on the basis of the model. Different shock wave forms are loaded into the surface and internal rock in the damage geometric model of EPB granite. Then, the breakage process of the rock surface and internally, and the mechanism of rock breakage using EPB are analyzed. This study provides a scientific basis for the quantitative expression and prediction of rock fragmentation in EPB in order to improve the drilling efficiency and reduction of energy loss in the process of EPB.

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Section: Introductionmentioning

confidence: 99%

Damage Model and Numerical Experiment of High-Voltage Electro Pulse Boring in Granite

Duan

Tan

et al. 2019

Energies

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“…Before analyzing electromagnetic loss, hexahedral hot were performed based on the equivalent thermal network method [6]. The electromagnetic loss of different composition cannot define temperature distribution correctly, in this research, 3D finite element magneto-thermal coupling analysis was applied along Maxwell Ansoft with Ansys Workbench to conduct coupling simulation model for electromagnetic and temperature field for in-wheel motor [7]. And thermal power of electromagnetic loss was imported as a load of the heat source into the temperature field, and electromagnetic loss was calculated in Maxwell Ansoft ahead of time, which the flux density distribution of stator core is shown in Figure 3.…”

Section: Electromagnetic Loss Simulation Based On Magneto-thermal Coumentioning

confidence: 99%

Investigation of Axial Flux In-Wheel Motor Performances Based on Multiphysics Analysis

Dou

Zhang

et al. 2021

E3S Web Conf.

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The axial flux with amorphous alloy stators has the virtues of high power density, high torque density, compact structure. But specific to the disadvantage of restricted space of in-wheel, the compact axial flux in-wheel motor was proposed in this paper. The in-wheel motor’s performance affects the dynamic and security of electric vehicles directly. And the electromagnetic loss has a significant impact on in-wheel motor performance. To demonstrate the influence of electromagnetic loss on the thermal behavior of the machine, thermal analyses employing magneto-thermal coupling simulations have been performed. Then the experimental prototype was manufactured and tested. The simulation of the output power model was verified by test value, proving that the magneto-thermal coupling simulation is feasible. Therefore, this design technique provides a reference for the in-wheel motor structure.

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“…where J np (α h r) is the Bessel function, and J np (α h R 2 ) = 0. Applying the variable separation method, the general solution of the magnetic potential equation can be expressed as (19) with…”

Section: Electromagnetic Field Calculationmentioning

confidence: 99%

“…In [18], an electromagneticthermal analytical model was established to calculate the eddy current loss and to predict the copper plate temperature for low slip speeds. In [19], a performance study of PM eddy current couplings was presented by the electromagneticthermal coupling simulation with a 3-D finite model. In [20], a design optimization of axial-flux eddy current couplings was presented based on an electromagnetic-thermal model.…”

Section: Introductionmentioning

confidence: 99%

Analytical Prediction and Analysis of Electromagnetic-Thermal Fields in PM Eddy Current Couplings With Injected Harmonics Into Magnet Shape for Torque Improvement

Zheng

Guo

2020

IEEE Access

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To improve the output torque in permanent magnet (PM) eddy current couplings, a new structure based on harmonics injection into the magnet optimization theory is proposed. Then, a novel analytical electromagnetic-thermal model is established that can accurately reflect the 3-D distributions of the magnetic field and the eddy current. With the proposed analytical model, the eddy current loss, temperature distribution, torque characteristics and influence of the temperature rise caused by load increases on the torque are predicted and analyzed precisely. The maximum output torque can be improved by 11.22% with injected harmonics into the magnet shape. On this basis, an optimal design of the conductor plate structure is presented, based on the electromagnetic-thermal analytical model. An additional 13.05% torque improvement can be obtained, which leads to better torque characteristics and overload capability. Verification is conducted by a 3-D finite element analysis and measurements. The analytical model solves the multiphysics coupling analysis problem of PM eddy current couplings, and provides a fast and accurate calculation method to perform electromagnetic-thermal coupling analysis. INDEX TERMS PM eddy current couplings, torque improvement, eddy current loss, electromagneticthermal model.

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Performance Study of Hybrid Magnetic Coupler Based on Magneto Thermal Coupled Analysis

Cited by 14 publications

References 13 publications

Damage Model and Numerical Experiment of High-Voltage Electro Pulse Boring in Granite

Damage Model and Numerical Experiment of High-Voltage Electro Pulse Boring in Granite

Investigation of Axial Flux In-Wheel Motor Performances Based on Multiphysics Analysis

Analytical Prediction and Analysis of Electromagnetic-Thermal Fields in PM Eddy Current Couplings With Injected Harmonics Into Magnet Shape for Torque Improvement

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