EP 1194936 A1 20020410 - INDUCTION DEVICES WITH DISTRIBUTED AIR GAPS
Title (en)
INDUCTION DEVICES WITH DISTRIBUTED AIR GAPS
Title (de)
INDUKTIONSVORRICHTUNGEN MIT VERTEILTEN LUFTSPALTEN
Title (fr)
DISPOSITIFS A INDUCTION DOTES D'ENTREFERS REPARTIS
Publication
Application
Priority
- SE 0001083 W 20000525
- US 31881799 A 19990526
Abstract (en)
[origin: WO0074089A1] A distributed air gap material for an induction device in power systems for minimizing fringe losses, mechanical losses, vibration and noise in the core. The distributed air gap material occupies a selected portion of the core and is formed of a finely divided magnetic material in a matrix of a dielectric material. The air gap material has a zone of transition in which the magnetic permeability values vary within the air gap material.
IPC 1-7
IPC 8 full level
H01F 27/24 (2006.01); H01F 3/14 (2006.01); H01F 27/245 (2006.01); H02K 1/06 (2006.01)
CPC (source: EP)
H01F 3/14 (2013.01)
Citation (search report)
See references of WO 0074089A1
Citation (examination)
- US 5748013 A 19980505 - BEAUCLAIR FRANÇOIS [FR], et al
- JP S59210623 A 19841129 - MATSUSHITA ELECTRIC WORKS LTD
- FR 2707122 A1 19950106 - GEC ALSTHOM T & D SA [FR]
- JP S59178713 A 19841011 - MITSUBISHI ELECTRIC CORP
- DE 628378 C 19360402 - SIEMENS AG
- US 1251651 A 19180101 - ESPENSCHIED LLOYD [US]
- DE 2325703 A1 19741219 - SIEMENS AG
- DE 3412003 A1 19851010 - BOSCH GMBH ROBERT [DE]
- US 3518595 A 19700630 - DAWSON SAMUEL LEE, et al
- KELLEY A.W.; SYMONDS F.P.: "Plastic-iron-powder distributed-air-gap magnetic material", PESC RECORD - IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE JUN 11-14 1990, vol. 1, no. CONF. 21, 11 June 1990 (1990-06-11), PISCATAWAY, NJ, USA, pages 25 - 34, XP000173895, ISSN: 0275-9306
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0074089 A1 20001207; AR 024092 A1 20020904; AU 5263100 A 20001218; CN 1190807 C 20050223; CN 1351752 A 20020529; EP 1194936 A1 20020410; JP 2003501798 A 20030114; TW 495775 B 20020721
DOCDB simple family (application)
SE 0001083 W 20000525; AR P000102538 A 20000524; AU 5263100 A 20000525; CN 00807966 A 20000525; EP 00937461 A 20000525; JP 2001500301 A 20000525; TW 89112222 A 20000621