Order Publications

Reference: ISH2017_312

Type:
ISH Collection
Title:

Adaptable FEM models with high level of detail to characterize insulation systems of large rotating machines

 

Abstracts

An essential component of the insulation system of large electric machines is the so called corona protection system. An important parameter in particular of the outer corona protection (OCP) is the ohmic resistance together with service related current and potential distributions as well as locally generated power losses. These parameters can be calculated and analyzed using finite element method (FEM). The plausibility of its results strongly depends on the quality of the generated FEM models containing very complex geometric structures followed by comprehensive meshing work. Previously generated models are extended and refined. Real wrapped insulation system structures are modeled with a high level of detail by realizing overlapping of thin tape layers and consideration of anisotropic material characteristics. The simulation calculation results will be presented for several material und load parameters. It is shown that the target design of corona protection systems is not only dependent of the ohmic resistance but also depends of the composition and interaction with the enwrapped main insulation.
 

Pages NB: 6

Year: 2017

 
 
 
Member
Non member
FREE free
 

Your AccountYour Account

Password forgotten

Members

may download free of charge all publications including most recent ones


Non Members

may download free of charge publications over three years old and purchase all publications

For any questions in connection with the on-line library, contact:


Publications and Editions Manager

publications@cigre.org