(19)

(11)

EP 1 364 451 A1

(12)

(43) Date of publication: 26.11.2003 Bulletin 2003/48 (21) Application number: 02740064.7 (22) Date of filing: 15.01.2002

(51) International Patent Classification (IPC)7: H02M 7/48 (86) International application number: PCT/SE0200/056 (87) International publication number: WO 0206/3757 (15.08.2002 Gazette 2002/33)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 05.02.2001 SE 0100331 (71) Applicant: ABB AB 721 83 Västeras (SE)	(72) Inventor: LINDBERG, Johan S-413 01 Göteborg (SE) (74) Representative: Olsson, Jan et al Bjerkéns Patentbyra KBP.O.Box 1274 801 37 Gävle 801 37 Gävle (SE)