Torque Characteristics Analysis of Slotted-Type Eddy-Current Couplings Using a New Magnetic Equivalent Circuit Model

Chen, Yang; Peng, Zhizhuo; Tai, Jiangxi; Zhu, Li; Telezing, Boris Joel Kenne; Ombolo, Patrick Djomo

doi:10.1109/tmag.2020.3009479

Cited by 15 publications

(5 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A typical reference that uses this method is [23], which establishes an MEC model for an axial-flux PMECC. Reference [134] analyzes the torque characteristics of a slotted PMECC using a similar method, considering the modulation of the magnetic field and eddy current by the iron teeth in the conductor disk. The final results show that this method is accurate and effective at low slip speeds and short air gaps.…”

Section: Magnetic Equivalent Circuit Methodsmentioning

confidence: 99%

A Review of Recent Developments in Permanent Magnet Eddy Current Couplers Technology

Wang

et al. 2023

Actuators

View full text Add to dashboard Cite

Permanent magnet eddy current couplers (PMECCs) have the characteristics of contactless torque transmission, removal of torque ripple, smooth dynamic process, and adjustable speed, and can be used as couplings, dampers, brakes, and speed governors. Their applications in industry, vehicles, and energy fields are gradually expanding. At the same time, the requirements for the torque density and dynamic performance of PMECCs are increasing. Therefore, a large amount of research work has focused on the fast and accurate modeling, design, and optimization of PMECCs. This paper provides a survey on the development of PMECCs technology. The main topics include the structure and classification of PMECCs, modeling methods, loss and heat transfer analysis modeling, and optimization design. In addition, this paper shows the future trends of PMECCs research. All the highlighted insights and suggestions of this review will hopefully lead to increasing efforts toward the model’s construction and the optimal design of PMECCs for future applications.

show abstract

Section: Magnetic Equivalent Circuit Methodsmentioning

confidence: 99%

A Review of Recent Developments in Permanent Magnet Eddy Current Couplers Technology

Wang

et al. 2023

Actuators

View full text Add to dashboard Cite

show abstract

“…In Figure 4, the calculation for all reluctances obeys the following principle [16, 26].

R = \frac{l}{μ A}

where R represents the reluctance, A is the cross‐sectional area of the magnetic circuit, l is the magnetic circuit length through the cross‐sectional area and µ is the magnetic permeability of magnetic circuit material.…”

Section: Magnetic Field Analysismentioning

confidence: 99%

A simple modelling on transmission torque of eddy‐current axial magnetic couplings considering thermal effect

Cheng

Liu

Luo

et al. 2021

IET Electric Power Appl

View full text Add to dashboard Cite

This paper proposes modelling on the transmission torque of an eddy‐current axial magnetic coupling (EAMC) considering the thermal effect. A new and simple equivalent reluctance network is established to obtain the magnetic flux density based on the two‐dimensional (2D) finite‐element analysis. Furthermore, the expressions of the transmission torque and the thermal loss are derived by establishing the computational coordinate system for the conductor sheet (CS) eddy current. Then, a simple and effective thermal network considering different convective heat transfer modes is presented to obtain the temperature rise, and the influence of temperature on some key parameters is given to correct the transmission torque. Furthermore, the proposed modelling is in good agreement with the three‐dimensional (3D) finite‐element method (FEM) and experiments under normal working conditions. Moreover, some suggestions for the design and optimization of EAMCs are provided.

show abstract

“…The absence of mechanical contact allows a significant increase in the life of the coupling. In addition, the nature of the torque transmission provides intrinsic protection against mechanical overload [5]. To transmit torque without contact, [3] studied an eddy current coupling where the primary disc was composed of PMs and the secondary disc was equipped with the conductor.…”

Section: Introductionmentioning

confidence: 99%

Torque Characteristics Analysis of a Novel Hybrid Superconducting Magnetic Coupling With Axial-Flux Using a Magnetic Equivalent Circuit Model

et al. 2022

Self Cite

View full text Add to dashboard Cite

A novel hybrid superconducting coupling (NHSC) is proposed in this paper, in which the secondary is composed of copper and a split superconductor. A magnetic equivalent circuit (MEC) model is presented to analyze and calculate the distribution of the magnetic field and torque characteristics. The 3D modeling considers the end effects encountered in mating. The expressions of the magnetic flux and torque are obtained by combining Kirchhoff's law and Ampere's loop law, respectively. A 3D finite element (FE) model is built, and the simulation is performed. Its performance is investigated using a 135K critical hightemperature superconductor to have a greater operating margin of the coupling. For a high slip speed of 1500 rpm, we observed a peak torque of 167 Nm and stability of 115 Nm. By varying the thickness of the air gap or the PMs, we observed the increasing or decreasing of the torque. Due to the cryogenics systems, we also observed the reduction of the losses by the joule effect. The maximum error between the results of the torque obtained by simulation and the results calculated using the proposed model is 6.74%, which proves that both results are in good agreement.INDEX TERMS Hybrid superconducting magnetic coupling, magnetic equivalent circuit (MEC), split superconductor disk, torque.

show abstract

Torque Characteristics Analysis of Slotted-Type Eddy-Current Couplings Using a New Magnetic Equivalent Circuit Model

Cited by 15 publications

References 22 publications

A Review of Recent Developments in Permanent Magnet Eddy Current Couplers Technology

A Review of Recent Developments in Permanent Magnet Eddy Current Couplers Technology

A simple modelling on transmission torque of eddy‐current axial magnetic couplings considering thermal effect

Torque Characteristics Analysis of a Novel Hybrid Superconducting Magnetic Coupling With Axial-Flux Using a Magnetic Equivalent Circuit Model

Contact Info

Product

Resources

About