A Contribution to Determine Natural Frequencies of Electrical Machines. Influence of Stator Foot Fixation

Lecointe, J.-P.; Romary, Raphaël; Brudny, J.F.

doi:10.1007/978-1-4020-4535-6_20

Cited by 3 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, to simplify modeling and calculation, the influence of the stator poles and windings on the natural frequencies of stators is treated simply as an additional mass (Anwar and Husain, 2000; Pillay and Cai, 1999; Grabner and Hajdarevic, 2004) or ignored directly (Cai et al ., 2001a, 2001b; Srinivas and Arumugam, 2004), which may cause greater calculation deviation. On the basis of analogies between mechanic and electrical domains, Lecointe et al . (2006) presented a method to investigate the influence of stator foot fixation on natural frequencies.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analytical method for the prediction of natural frequencies of switched reluctance motor based on electromechanical analogy method

Tan

Wang

Chen

2018

COMPEL

View full text Add to dashboard Cite

Purpose An improved analytical method for calculating the natural frequencies of a switched reluctance motor (SRM) stator is proposed in this paper. The method is different from traditional analytical methods, which only consider the influence of mass of the stator poles and windings on the natural frequencies of the SRM stator. This paper aims to consider the influence of stiffness and mass of the stator poles and windings simultaneously and reasonably. Design/methodology/approach An innovated analytical method based on the electromechanical analogy method is presented. In the proposed analytical formulae for calculating the natural frequencies, the influence of the windings on natural frequencies is considered by using the springs to simulate the flexible connection between the stator core and windings, and the stator poles are treated as both additional mass and additional equivalent stiffness. Both three-dimensional (3D) finite-element analysis (FEA) and experimental modal analysis results validate the improved method. Findings The influence of the mass and stiffness of stator winding is considered by using the springs to simulate the flexible connection between the stator core and windings, and the stator poles are treated as both additional mass and additional equivalent stiffness. The traditional analytical method only considers the influence of mass. Therefore, the calculation results are comparatively lower than 3D FEA results and may lead to a large error. The 3D FEA and experimental modal analysis confirm that the proposed method has good precision for low-order natural frequency calculation of SRMs. Originality/value An improved analytical method for calculating the natural frequencies of an SRM stator is proposed. Unlike the traditional analytical method, the proposed method can consider the influence of stiffness and mass of the stator poles and windings. This method is valuable for designers to predict the natural frequencies accurately.

show abstract

Section: Introductionmentioning

confidence: 99%

“…(2006) presented a method to investigate the influence of stator foot fixation on natural frequencies. In comparison with FEA, this method can obtain the natural frequencies rapidly, but only simple structures such as smooth cylinders were studied by Lecointe et al . (2006).…”

Section: Introductionmentioning

confidence: 99%

Analytical method for the prediction of natural frequencies of switched reluctance motor based on electromechanical analogy method

Tan

Wang

Chen

2018

COMPEL

View full text Add to dashboard Cite

show abstract

Automated radial vibrations reduction for switched reluctance machines

Lecointe

Pusca

Cassoret

et al. 2010

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

View full text Add to dashboard Cite

If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The purpose of this paper is to suggest a procedure which makes it possible to reduce the radial vibrations of doubly salient switched reluctance motors (SRMs). Design/methodology/approach -An analytical method for the SRM radial vibration determination is first described. It is then extended to the active vibration reduction. An auxiliary winding equips the stator. The paper explains how the corresponding currents have to be adjusted to achieve a simple and robust control, with a special emphasis about the compatibility of the main and auxiliary supplies and about the reduction control principle. At last, an example of drastic noise reduction is presented. Findings -The proposed method makes possible to define the theoretical vibration spectrum of SRM and thus it gives the major components to be reduced. The feasibility of automating the principle of active reduction is shown. The process of active reduction shows that a vibration component can be diminished by over 90 percent.Research limitations/implications -The active reduction is applied for reducing one component of the vibration spectrum. Future developments will focus on the simultaneous reduction of several components of vibration spectrum. Originality/value -The method offers an automated process to reduce considerably the component of highest amplitude in the vibration spectrum.

show abstract