General Formulation of Fringing Fields in 3-D Cylindrical Structures Using Fourier Analysis

Meessen, K. J.; Gysen, B.L.J.; Paulides, Jjh Johannes; Lomonova, E. A.

doi:10.1109/tmag.2012.2192939

Cited by 33 publications

(16 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A discussion on the numerical limitations of such semi-analytical models has been presented in [69,70]. Numerical methods, which use a meshed geometry, will have a limited accuracy related to the density of the mesh.…”

Section: Numerical Problems: Harmonics and Ill-conditioned Systemmentioning

confidence: 99%

“…Consequently, an electromagnetic device with a high number of teeth/slots results in large model and, hence, in high computational time [70]. The numerical accuracy of magnetic field solution and the computational time depend on the highest spatial harmonic orders considered in the different subdomains.…”

Section: Numerical Problems: Harmonics and Ill-conditioned Systemmentioning

confidence: 99%

See 1 more Smart Citation

New Scientiﬁc Contribution on the 2-D Subdomain Technique in Cartesian Coordinates: Taking into Account of Iron Parts

Dubas

Boughrara

2017

MCA

View full text Add to dashboard Cite

Abstract:The most significant assumptions in the subdomain technique (i.e., based on the formal resolution of Maxwell's equations applied in subdomain) is defined by: The iron parts (i.e., the teeth and the back-iron are considered to be infinitely permeable, i.e., µ iron → +∞, so that the saturation effect is neglected. In this paper, the authors present a new scientific contribution on improving of this method in two-dimensional (2-D) and in Cartesian coordinates by focusing on the consideration of iron. The subdomains connection is carried out in the two directions (i.e., x-and y-edges). For example, the improvement was performed by solving magnetostatic Maxwell's equations for an air-or iron-cored coil supplied by a direct current. To evaluate the efficacy of the proposed technique, the magnetic flux density distributions have been compared with those obtained by the 2-D finite-element analysis (FEA). The semi-analytical results are in quite satisfying agreement with those obtained by the 2-D FEA, considering both amplitude and waveform.

show abstract

Section: Numerical Problems: Harmonics and Ill-conditioned Systemmentioning

confidence: 99%

Section: Numerical Problems: Harmonics and Ill-conditioned Systemmentioning

confidence: 99%

New Scientiﬁc Contribution on the 2-D Subdomain Technique in Cartesian Coordinates: Taking into Account of Iron Parts

Dubas

Boughrara

2017

MCA

View full text Add to dashboard Cite

show abstract

“…For example, flux fringing, complex shapes, leakage, magnetic saturation, etc. are in general neglected although that significant progress is currently undertaken [10][11], which results in some small loss of accuracy. Therefore, numerical techniques are still…”

Section: Optimization Routinementioning

confidence: 99%

Fast Component Placement with Optimized Long-Stroke Passive Gravity Compensation Integrated in a Cylindrical/Tubular PM Actuator

Paulides¹,

Encica²,

Meessen³

et al. 2013

Journal of international Conference on Electrical Machines and

View full text Add to dashboard Cite

-Applications such as vibration isolation, gravity compensation, pick-and-place machines, etc., would benefit from (long-stroke) cylindrical/tubular permanent magnet (PM) actuators with integrated passive gravity compensation to minimize the power consumption. As an example, in component placing (pick-and-place) machines on printed circuit boards, passive devices allow the powerless counteraction of translator including nozzles or tooling bits. In these applications, an increasing demand is arising for high-speed actuation with high precision and bandwidth capability mainly due to the placement head being at the foundation of the motion chain, hence, a large mass of this device will result in high force/power requirements for the driving mechanism (i.e. an H-bridge with three linear permanent magnet motors placed in an H-configuration). This paper investigates a tubular actuator topology combined with passive gravity compensation. These two functionalities are separately introduced, where the combination is verified using comprehensive three dimensional (3D) finite element analyses.

show abstract

“…Recently, a 3-D analytical model has been developed to compute the torque for a magnetic rotor moving above a conducting plate [25] using the secondorder vector potential approach [26]. Overall, most of the 3-D magnetic field problems that have been recently solved by an analytical way are most often dedicated to the magnetostatic case [27]- [30], and very little attention is given to the 3-D eddy-current problems with moving conductors.…”

Section: Introductionmentioning

confidence: 99%

3-D Analytical Model for Axial-Flux Eddy-Current Couplings and Brakes Under Steady-State Conditions

Lubin

Rezzoug

2015

IEEE Trans. Magn.

View full text Add to dashboard Cite

This paper presents a 3-D analytical model for axial-flux eddy-current couplings and brakes, leading to closed-form expressions for the torque and the axial force. The proposed model is valid under a steady-state condition (constant speed operation). It takes into account the reaction field due to induced currents in the moving conducting part. In order to simplify the analysis, we adopt the assumption of linearization at the mean radius, and the problem is then solved in 3-D Cartesian coordinates (curvature effects are neglected). The solution is obtained by solving the Maxwell equations with a magnetic scalar potential formulation in the nonconductive regions (magnets and air gap) and a magnetic field strength formulation in the conductive region (copper). Magnetic field distribution, axial force, and torque computed with the 3-D analytical model are compared with those obtained from the 3-D finite-element simulations and experimental results.

show abstract

General Formulation of Fringing Fields in 3-D Cylindrical Structures Using Fourier Analysis

Cited by 33 publications

References 11 publications

New Scientiﬁc Contribution on the 2-D Subdomain Technique in Cartesian Coordinates: Taking into Account of Iron Parts

New Scientiﬁc Contribution on the 2-D Subdomain Technique in Cartesian Coordinates: Taking into Account of Iron Parts

Fast Component Placement with Optimized Long-Stroke Passive Gravity Compensation Integrated in a Cylindrical/Tubular PM Actuator

3-D Analytical Model for Axial-Flux Eddy-Current Couplings and Brakes Under Steady-State Conditions

Contact Info

Product

Resources

About