(19)
(11) EP 1 537 646 A1

(12)

(43) Date of publication:
08.06.2005 Bulletin 2005/23

(21) Application number: 04728361.9

(22) Date of filing: 20.04.2004
(51) International Patent Classification (IPC)7H02M 7/162, H02M 5/45
(86) International application number:
PCT/FI2004/000241
(87) International publication number:
WO 2004/098038 (11.11.2004 Gazette 2004/46)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 25.04.2003 FI 20030632

(71) Applicant: ABB Oy
00380 Helsinki (FI)

(72) Inventor:
  • MIETTINEN, Erkki
    FI-00170 Helsinki (FI)

(74) Representative: Valkeiskangas, Tapio Lassi Paavali et al
Oy Kolster Ab,Iso Roobertinkatu 23,P.O. Box 148
00121 Helsinki
00121 Helsinki (FI)

   


(54) METHOD OF CONTROLLING HALF-CONTROLLED RECTIFIER, AND RECTIFIER STRUCTURE