A New Analytical Torque Formula for Axial Field Permanent Magnets Coupling

Dolisy, Bastien; Mezani, Smaïl; Lubin, Thierry; Lévêque, Jean

doi:10.1109/tec.2015.2424159

Cited by 44 publications

(33 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interaction forces between the two inductors of the AFMC are obtained using the Electrostatic-Magnetostatic analogy, [3]. The Lorentz force exerted on the uniform electric surface charge subjected to an electric field , is:…”

Section: B Forces Expressionsmentioning

confidence: 99%

“…More recently, 3D analytical models, based on the resolution of the Maxwell equations in the Cartesian coordinates, are developed. For this purpose, the cylindrical topology is linearized into a 3D linear topology extended to infinity, neglecting the curvature effect [3], [17]. These methods do not allow to take into account the effects of extremities due to the finite length of the linear actuators.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

3D Analytical Computation of the Torque in Axial Flux Permanent Magnets Couplings Based on Charges Model and Images Method

Messadi

Hadjout

Ouazir

et al. 2018

2018 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)

View full text Add to dashboard Cite

This paper presents a simple and accurate 3D analytical expressions to compute the force and torque of an axial flux magnetic couplings (AFMC) based on the equivalent magnetic charges and the images method. The proposed model is formulated and solved in a 3D Cartesian coordinate system by considering the assumption of linearization around the mean radius. Firstly, the magnetic flux density due to the cubic permanent magnets (PM), of one side of the magnetic coupling, is computed in 3D considering the magnetic end effects where the iron yokes influence is considered thanks to the images method. Secondly, the force and the torque among the magnets located in the opposite sides are obtained using the analogy between the electrostatic and magnetostatic forces. The derived analytical expressions depend directly on the geometrical and physical parameters of the AFMC. The analytical results are compared to those obtained with finite element simulation and experimental measurements.

show abstract

Section: B Forces Expressionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D Analytical Computation of the Torque in Axial Flux Permanent Magnets Couplings Based on Charges Model and Images Method

Messadi

Hadjout

Ouazir

et al. 2018

2018 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)

View full text Add to dashboard Cite

show abstract

“…There are two main types of magnetic couplings: synchronous and asynchronous (eddycurrent), with radial and axial flux topologies. The synchronous magnetic coupling [1][2][3][4][5] consists of rare-earth permanent magnets (PMs) placed on both rotors that move at the same speed. It has a pull-out torque, which is the maximum torque that can be transmitted by the coupling before the stall.…”

Section: Introductionmentioning

confidence: 99%

Simulation analysis and experimental evaluation of the transient behaviour of a reluctance magnetic coupling

Lubin

Colle

2020

IET Electric Power Applications

Self Cite

View full text Add to dashboard Cite

The aim of this paper is to present the dynamic behavior of two co-axial rotating shafts connected by a reluctance magnetic coupling. The analysis is based on nonlinear differential equations of motion. The reluctance magnetic coupling is modeled by an equivalent torsional stiffness coefficient and an additional viscous damping coefficient to account for the effects of induced currents in the salient-pole during the transient. These coefficients are obtained from 3D finite element electromagnetic models. In order to evaluate the accuracy of the proposed model, several transient responses for the shaft line are considered. The simulation results are compared with those obtained from measurements.

show abstract

“…They can transmit torque through an air gap between two rotors that are, respectively, attached to the prime mover and the load. There are mainly three types of magnetic couplings, namely, electromagnetic coupling [1,2], permanent magnet synchronous coupling [3][4][5][6][7][8][9], and permanent magnet eddy current coupling [10][11][12][13][14][15][16]. These types of magnetic couplings have both axial-flux or radialflux configurations.…”

Section: Introductionmentioning

confidence: 99%

Design and Steady‐State Performance of a Novel Winding Type Permanent Magnet Coupling with Slip Power Recovery Function

Xia

Jiang

2017

Mathematical Problems in Engineering

View full text Add to dashboard Cite

A novel winding type permanent magnet coupling (WTPMC) is proposed to work as an adjustable speed drive with slip power recovery function. As a kind of dual-mechanical-port electric machine with radial-flux configuration, the WTPMC consists of an outer rotor embedded with three-phase windings, an inner rotor populated with permanent magnets, and a slip power recovery circuit comprising a rectifier, a boost converter, and an ultracapacitor. The working principle of the WTPMC is presented, and its mathematical model is derived. To develop a WTPMC prototype for automotive applications, two-dimensional (2D) finite element analysis (FEA) is conducted using Ansoft Maxwell software to study the steady-state (constant slip speed) performance. For the experimental validation, the WTPMC prototype is manufactured and tested on a test bench. To show the accuracy of the 2D FEA, the computed results are compared with those obtained from experimental measurements. It is shown that the agreement between the 2D FEA and experimental results is good. Moreover, the WTPMC prototype can operate in the output speed range under different load torque conditions. The slip power recovery efficiency for the 2D FEA is 66.7%, while, for experimental measurements, it is 57.2%.

show abstract

A New Analytical Torque Formula for Axial Field Permanent Magnets Coupling

Cited by 44 publications

References 15 publications

3D Analytical Computation of the Torque in Axial Flux Permanent Magnets Couplings Based on Charges Model and Images Method

3D Analytical Computation of the Torque in Axial Flux Permanent Magnets Couplings Based on Charges Model and Images Method

Simulation analysis and experimental evaluation of the transient behaviour of a reluctance magnetic coupling

Design and Steady‐State Performance of a Novel Winding Type Permanent Magnet Coupling with Slip Power Recovery Function

Contact Info

Product

Resources

About