Numerical analysis on electric field and taping for stator coil with global insulation

Author

Akinobu, Nakayama ; Inoue, Seiichi ; Haga, Kohji

Author_Institution

Rotating Machinery Dept, Fuji Electr. Co. Ltd., Kawasaki, Japan

fYear

2001

fDate

2001

Firstpage

641

Lastpage

644

Abstract

The electrical and mechanical characteristics of our global insulation system (F-resin/G II insulation system) have been introduced in the several papers. In order to perform the optimal insulation design, a quantitative analysis of stator coil with global VPI insulation of generators is required, and therefore electric field strength of current coils was analyzed utilizing the finite element method (FEM) in this time. In the other hand, quality of coil insulation is dependent upon not only materials used but also manufacturing method. In particular, since a taping method of insulation affects the break down voltage (BDV) of coils, the optimum state thereof should be seized. Based on the above, the optimum state of taping was determined through a unique analysis program. The numerical analysis results are reflected to current stator coils with global insulation system contributing to the upgrading of insulation

Keywords

electric breakdown; electric field effects; electric generators; finite element analysis; machine insulation; stators; 22 kV; F-resin/G H insulation system; FEM; analysis program; break down voltage; coil edge beveling; concentric cylinder formula; current coils; electric field strength; electrical characteristics; finite element method; generators; global VPI insulation; global insulation system; mechanical characteristics; numerical analysis results; optimal insulation design; stator coil; taping method; Coils; Conductors; Dielectrics and electrical insulation; Electromagnetic analysis; Numerical analysis; Performance analysis; Power generation; Stators; Stress; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on

Conference_Location

Himeji

Print_ISBN

4-88686-053-2

Type

conf

DOI

10.1109/ISEIM.2001.973754

Filename

973754