Finite element torque calculation in electrical machines while considering the movement

Sadowski, N.; Lefèvre, Yvan; Lajoie‐Mazenc, M.; Cros, J.

doi:10.1109/20.123957

Cited by 131 publications

(69 citation statements)

References 6 publications

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“…A local remeshing is done when the elements deformation is important. This method presents some of numerical problems [17]. One of these problems is that the bandwidth and profile values increase with the movement.…”

Section: The Moving Bandmentioning

confidence: 99%

See 1 more Smart Citation

A New Fast Method of Profile and Wavefront Reduction for Cylindrical Structures in Finite Elements Method Analysis

Boutora¹,

Ibtiouen²,

Mezani³

et al. 2011

PIER B

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Abstract-We present a new accurate node's renumbering method for minimizing the profile of stiffness matrix arising in finite elements problems. This method is suitable for cylindrical structures like electrical rotating machines and is especially intended for movement consideration by the moving band method. The structure is divided into sectors classified in a special way. The nodes contained in each sector are classified according to their radius value in regressing order. We show that the performances of the method are better than the most popular ones proposed in the literature. Application for a permanent magnet synchronous machine is presented. Application for finite elements analysis of a permanent synchronous machine in motion is achieved.

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Section: The Moving Bandmentioning

confidence: 99%

“…This problem can be solved by considering the complete structure (in case of rotating machines). Problems of distortion of elements can be solved by choosing an appropriate step [17,20] of moving, refine moving band meshing [21], and to solve with direct methods such Gauss method [22] for precision and no divergence.…”

Section: The Moving Bandmentioning

confidence: 99%

A New Fast Method of Profile and Wavefront Reduction for Cylindrical Structures in Finite Elements Method Analysis

Boutora¹,

Ibtiouen²,

Mezani³

et al. 2011

PIER B

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show abstract

“…There are many advantages, such as the number of equations can be reduced by using boundary, open boundary problems are easily formulated, and non-linear regions can be represented by finite elements. 15 However, this method increases the bandwidth of the system matrix and increases the computational time. An interpolation slip surface method is proposed in Yan et al 16 It effectively treats the single movement boundary.…”

Section: Introductionmentioning

confidence: 99%

The treatment of moving problem for constant-frequency double-rotor generator in finite element analysis

Jiang

Zhang

Cheng

2015

Advances in Mechanical Engineering

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The constant-frequency double-rotor generator has the potential to be used in the marine energy conversions, such as tides and marine current power generation system due to the advantages. However, there are two different rotational speed movement boundaries in the constant-frequency double-rotor generator, especially the inner moving part boundary between the inner wound rotor and outer permanent magnet rotor. This complicates the finite element analysis and greatly increases the analysis time. In this article, a new finite element analysis method based on double boundaries interpolation multiple reference frame is proposed. The principle of the interpolation multiple reference frame method is introduced, and the analysis and comparison with the traditional method are carried out. The analysis results show that the interpolation multiple reference frame method simplifies the preprocessing procedure, reduces computation time, ensures high calculation accuracy, and has the potential to be applied in all kinds of multiple mechanical port machines.

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“…There are methods based on the magnetic coenergy [14] and stored energy [15] but typically the Maxwell stress tensor method [16] and Coulomb's method based on the principle of virtual work [17] are used for the numerical computation of torque. However, these methods do not ensure an accurate torque estimate in the case of an eccentric machine.…”

Section: Introductionmentioning

confidence: 99%

Influence of the rotor eccentricity on the torque of a cage induction machine

Silwal¹,

Rasilo

Belahcen³

et al. 2017

Archives of Electrical Engineering

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Abstract:The non-uniform air gap in an electrical machine caused by rotor eccentricity creates an asymmetrical flux-density distribution in the air gap. This can affect the nominal torque produced by the machine. Eccentricity also produces forces that act on the rotor which may also have an effect on the torque. Thus, it is important to know how the torque of the machine behaves. In this paper, the torque of a cage induction machine is studied when the machine has dynamic eccentricity. The study is performed using the finite element method and a magnetic vector potential formulation. The torque is calculated by the method of energy balance. The harmonic components of the torque are also analyzed. The results show that the machine under eccentricity does not exhibit the same torque as a normal healthy machine. The harmonic components around the first principal slot harmonic is most affected.

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Finite element torque calculation in electrical machines while considering the movement

Cited by 131 publications

References 6 publications

A New Fast Method of Profile and Wavefront Reduction for Cylindrical Structures in Finite Elements Method Analysis

A New Fast Method of Profile and Wavefront Reduction for Cylindrical Structures in Finite Elements Method Analysis

The treatment of moving problem for constant-frequency double-rotor generator in finite element analysis

Influence of the rotor eccentricity on the torque of a cage induction machine

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