(19)

(11)

EP 2 396 878 A1

(12)

(43) Date of publication: 21.12.2011 Bulletin 2011/51 (21) Application number: 10740968.2 (22) Date of filing: 10.02.2010

(51) International Patent Classification (IPC):  H02M 3/337(2006.01) H02M 7/538(2007.01) (86) International application number: PCT/FI2010/050084 (87) International publication number: WO 2010/092233 (19.08.2010 Gazette 2010/33)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 12.02.2009 FI 20095132 (71) Applicant: MEG Power Oy 15230 Lahti (FI)	(72) Inventor: PIENISAARI, Heikki FI-04600 Mäntsälä (FI) (74) Representative: Äkräs, Tapio Juhani  Kolster Oy Ab Iso Roobertinkatu 23 P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)