(19)
(11) EP 1 040 553 A2

(12)

(88) Date of publication A3:
22.07.1999

(43) Date of publication:
04.10.2000 Bulletin 2000/40

(21) Application number: 98952945.8

(22) Date of filing: 29.09.1998
(51) International Patent Classification (IPC)7: H02K 21/04
(86) International application number:
PCT/IB9801/829
(87) International publication number:
WO 9929/029 (10.06.1999 Gazette 1999/23)
(84) Designated Contracting States:
CH DE DK ES FI FR GB IT LI NL PT SE

(30) Priority: 28.11.1997 US 980213

(71) Applicant: ABB AB
721 83 Västeras (SE)

(72) Inventors:
  • LEIJON, Mats
    S-723 35 Vasteras (SE)
  • NYGREN, Jan-Anders
    S-722 22 Vasteras (SE)
  • GERTMAR, Lars
    S-722 26 Vasteras (SE)
  • BERGGREN, Bertil
    S-723 46 Vasteras (SE)

(74) Representative: Bornegard, Annette et al
ABB AB,Patent
721 78 Västeras
721 78 Västeras (SE)

   


(54) A METHOD AND DEVICE FOR CONTROLLING THE MAGNETIC FLUX IN A ROTATING HIGH VOLTAGE ELECTRIC ALTERNATING CURRENT MACHINE WITH PERMANENT MAGNET ROTOR