Flux Distribution in Saturated DC Machines at No-Load

Erdelyi, E. A.; Ahamed, Syed V.; Burtness, R. D.

doi:10.1109/tpas.1965.4766208

Cited by 32 publications

(6 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, these works have not taken into consideration the non-linear nature of B − H curve of the ferromagnetic material. In [31], a numerical solution is presented to tackle the saturation effects by representing the material reluctivity in difference form using Froelich's equation. However, in this work, the approximated magnetization curve is able to represent only a section of the B − H curve.…”

Section: Introductionmentioning

confidence: 99%

Analytical Model for Permanent Magnet Motor With Slotting Effect, Armature Reaction, and Ferromagnetic Material Property

Dalal

Kumar

2015

IEEE Trans. Magn.

View full text Add to dashboard Cite

Among various types of motors, Permanent Magnet (PM) motors, due to their high energy density are mainly used for electric based propulsion systems. In this paper an improved analytical model for PM motor has been presented. The model takes into account important factors such as, armature reaction, slotting effect and influence of non-linear material property on motor's behavior. Moreover, the main contributions of this work is representation of stator windings with exact winding width using Fourier series and consideration of effects of non-linear ferromagnetic material property. Using this model it is possible to determine air-gap magnetic field, flux linkage, back emf, cogging torque and electromagnetic torque with high accuracy. Results from the proposed model are compared with other analytical model and also with those from finite element analysis (FEA). The results obtained from the proposed method match closely with the FEA.Index Terms-Analytical models, cogging torque, electric vehicle, magnetic field, permanent magnet. 0018-9464 (c)

show abstract

Section: Introductionmentioning

confidence: 99%

Analytical Model for Permanent Magnet Motor With Slotting Effect, Armature Reaction, and Ferromagnetic Material Property

Dalal

Kumar

2015

IEEE Trans. Magn.

View full text Add to dashboard Cite

show abstract

“…It was Erdélyi who introduced the use of finite difference method in electrical machines modeling [27] [28]. This approach is qualified as strong formulation because the three equations of (11) are explicitly imposed.…”

Section: Methodsmentioning

confidence: 99%

“…In [27], the finite difference equations on regular node and on interface node (17) are combined into a unique general finite difference equation. This general equation takes also into account the finite difference equation on node situated on a corner of a magnetic medium.…”

Section: A Treatment Of the Field Continuity Conditions On Interfacementioning

confidence: 99%

Theoretical considerations in numerical analysis in view of modeling a pulsatile magnetoactive pump for medical circulatory support

Martinez

Lefèvre

2010

The XIX International Conference on Electrical Machines - ICEM 2010

View full text Add to dashboard Cite

This paper presents theoretical considerations on numerical modelling of magnetic fields in view of modeling a pulsatile magnetoactive pump based on the use of flexible magnetic material. To some extent, this publication fills a gap in the literature of numerical methods: the comparisons and analyses of some results obtained from the 'old' FDS, the 'popular' FEM. The authors, in previous publications, have presented numerical results that can be now considered as numerical facts. This contribution presents theoretical considerations from which the comparisons of the numerical results obtained from a strong formulation using finite difference schemes (FDS) and a weak formulation using finite element method (FEM) can be interpreted.Index Terms--Boundary value problems, continuity conditions at interface, finite difference methods, finite element methods, magnetic field, weak formulation, strong formulation, pulsatile magnetoactive pump, medical circulatory support. (13) into equation (12) produces the partial derivative of A I,J with respect to y in the air: J I J I J I J I J I Substitution of equation

show abstract

“…These papers have limited their models by considering stator and rotor yoke materials to be infinitely permeable or some constant value by assuming that the motor operates in linear region [8]- [24]. Very few efforts have been made to include the effect of non-linear behavior of ferromagnetic material of motor [8], [25], [26]. Among which [8], [25] have included the saturation effect by introducing a saturation factor to modify the air-gap length.…”

Section: Introductionmentioning

confidence: 99%

“…Among which [8], [25] have included the saturation effect by introducing a saturation factor to modify the air-gap length. In [26], a numerical solution is presented to tackle the saturation effects by representing the material reluctivity in difference form using Froelich's equation. However, the approximated magnetization characteristics in this work fits only in a limited region of the B − H curve.…”

Section: Introductionmentioning

confidence: 99%

Analytical model of a permanent magnet brushless DC motor with non-linear ferromagnetic material

Dalal

Kumar

2014

2014 International Conference on Electrical Machines (ICEM)

View full text Add to dashboard Cite

This paper presents an analytical model for determining air-gap radial and tangential magnetic field in permanent magnet brushless dc (PMBLDC) motor. The solution is based on two-dimensional analysis in polar coordinates for radially magnetized magnet. Effects caused due to non-linear behavior of the stator ferromagnetic yoke are mainly considered. Radial and tangential magnetic field, back emf and cogging torque are calculated and are validated with finite element results. The finite element analysis demonstrates the accuracy of the developed analytical model of PMBLDC motor for no load magnetic field calculation.

show abstract

Flux Distribution in Saturated DC Machines at No-Load

Cited by 32 publications

References 2 publications

Analytical Model for Permanent Magnet Motor With Slotting Effect, Armature Reaction, and Ferromagnetic Material Property

Analytical Model for Permanent Magnet Motor With Slotting Effect, Armature Reaction, and Ferromagnetic Material Property

Theoretical considerations in numerical analysis in view of modeling a pulsatile magnetoactive pump for medical circulatory support

Analytical model of a permanent magnet brushless DC motor with non-linear ferromagnetic material

Contact Info

Product

Resources

About