(19)

(11)

EP 2 132 857 A2

(12)

(88) Date of publication A3: 07.08.2008 (43) Date of publication: 16.12.2009 Bulletin 2009/51 (21) Application number: 07848444.1 (22) Date of filing: 07.12.2007

(51) International Patent Classification (IPC):  H02K 1/27(2006.01) H02K 1/24(2006.01) H02K 1/14(2006.01) (86) International application number: PCT/GB2007/004690 (87) International publication number: WO 2008/068503 (12.06.2008 Gazette 2008/24)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR (30) Priority: 07.12.2006 GB 0624449 08.01.2007 GB 0700240 (71) Applicant: Cranfield University Swindon SN6 8LA (GB)	(72) Inventors: JINUPUN, Poramaste Highworth SN6 7DX (GB) CHI-KWONG LUK, Patrick Oxfordshire OX28 5JD (GB)