Free vibration analysis of a large hydroelectric generator and computation of radial electromagnetic exciting forces

Dirani, Hind Chit; Cupillard, Samuel; Merkhouf, Arezki; Bélanger, Sylvain; Tounzi, A.; Giroux, Anne-Marie; Al‐Haddad, Kamal

doi:10.1109/iemdc.2015.7409079

Cited by 12 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also researches on monitoring of machine parameter with a combined measurement of different types of sensors e.g. flux and vibration or force, rotor interconnection monitoring using flux and current and partial discharge monitoring can be carried out successfully with this sensors configuration [55], [56], [57], [7], [58], [59], [60], [61], [62].…”

Section: Excitation Circuitmentioning

confidence: 99%

Characterization of a Large Electrical Machine Test

Ebrahimi¹

2018

Preprint

View full text Add to dashboard Cite

The acceptability and also the acceleration ofrenewable energy technologies is tightly linked with a betterunderstanding of dynamic behavior of drive train componentsand their interactions. This ultimate understanding of systemcharacteristics can only be achieved with comprehensiveexperimental investigations on different phenomena of largeelectrical generators. This leads consequently to a betterverification of numerical and analytical models of largegenerators. The large generator-converter lab which is discussedin this paper is a unique opportunity for deep experimentalinvestigations on large hydro and wind generators. It is designedto deal with the current as well as future research topics in thefield of wind and hydro generators and their interactions withpower electronic devices and electrical grid.

show abstract

Section: Excitation Circuitmentioning

confidence: 99%

Characterization of a Large Electrical Machine Test

Ebrahimi¹

2018

Preprint

View full text Add to dashboard Cite

show abstract

“…The radial vibration of the stator core can be treated as the periodic expanding and shrinking of the mass points. Mathematically, these periodic expanding and shrinking can be expressed as a displacement array of the mass points, whose kinetic equation is [23][24] ( ) ( ) ( ) ( )…”

Section: Stator Structure and Magnetic Pull Per Unit Areamentioning

confidence: 99%

United Electromagnetic Characteristics and Online Monitoring Method of Static Air-gap Eccentricity of Turbo-Generator

Tang¹,

Ke²,

He³

et al. 2016

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-The purpose of this paper is to investigate the united Electromagnetic characteristics for the effective monitoring on the static air-gap eccentricity (SAGE) of turbo-generator. Different from other studies, this paper not only studies on the unbalanced magnetic pull (UMP) and the vibration characteristics of the stator and the rotor, but also investigates the harmonic features of the magnetic flux density and the circulating current inside the parallel branches (CCPB). The theoretical calculation, together with the finite-element-method (FEM) simulation and the experiment verification, is taken for a SDF-9 type non-salient generator. It is shown that, when SAGE occurs, apparent doublefrequency UMP and vibrations will be produced both on the stator and the rotor, while the CCPB will have an obvious increment at the 1 st harmonic component. In addition, the amplitude of the magnetic flux density will be of cosine distribution in the circumferential position of the air-gap, while in normal condition it is a constant. Moreover, the pass-band amplitude, together with the 1 st harmonic of the magnetic flux density, will be enlarged as well. These united electromagnetic characteristics can be used as the diagnosis and monitoring criterion for SAGE.

show abstract