The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2005
Filed:
May. 27, 1997
Mats Leijon, Västerås, SE;
BO Hernnäs, Västerås, SE;
Peter Carstensen, Huddinge, SE;
Mons Hölleland, Västerås, SE;
Peter Templin, Köping, SE;
Lars Gertmar, Västerås, SE;
Claes Ivarson, Västerås, SE;
Erland Sörensen, Västerås, SE;
Gunnar Davidsson, Västerås, SE;
Gunnar Kylander, Västerås, SE;
Bertil Larsson, Västerås, SE;
Sören Berggren, Västerås, SE;
Bertil Berggren, Västerås, SE;
Jan-anders Nygren, Västerås, SE;
Bengt Rydholm, Västerås, SE;
Hans-olof Kalldin, Västerås, SE;
Mats Leijon, Västerås, SE;
Bo Hernnäs, Västerås, SE;
Peter Carstensen, Huddinge, SE;
Mons Hölleland, Västerås, SE;
Peter Templin, Köping, SE;
Lars Gertmar, Västerås, SE;
Claes Ivarson, Västerås, SE;
Erland Sörensen, Västerås, SE;
Gunnar Davidsson, Västerås, SE;
Gunnar Kylander, Västerås, SE;
Bertil Larsson, Västerås, SE;
Sören Berggren, Västerås, SE;
Bertil Berggren, Västerås, SE;
Jan-Anders Nygren, Västerås, SE;
Bengt Rydholm, Västerås, SE;
Hans-Olof Kalldin, Västerås, SE;
ABB AB, Vasteras, SE;
Abstract
The magnetic circuit of a generator in a hydro-generator plant is arranged to directly supply a high supply voltage of 20-800 kV, preferably higher than 36 kV. The generator is provided with solid insulation and its winding includes a cable () comprising one or more current-carrying conductors () with a number of strands () surrounded by at least one outer and one inner semiconducting layer () and intermediate insulating layers (). The outer semiconducting layer () is at earth potential. The stator winding may be produced with full or fractional slot winding, the phases of the winding being Y-connected. The Y-point may be insulated and protected from over-voltage by means of surge arresters, or else the Y-point may be earthed via a suppression filter. The invention also relates to a hydro-generator plant, a generator included in the plant and a procedure for building such a plant.