Global Patent Index - EP 1805888 A2

EP 1805888 A2 20070711 - HIGH PHASE ORDER AC MACHINE WITH SHORT PITCH WINDING

Title (en)

HIGH PHASE ORDER AC MACHINE WITH SHORT PITCH WINDING

Title (de)

WECHSELSTROMMASCHINE MIT HOHER PHASENORDNUNG MIT KURZGANG-WICKLUNG

Title (fr)

MACHINE CA A ORDRE DE PHASE ELEVE A ENROULEMENT A PAS COURT

Publication

EP 1805888 A2 20070711 (EN)

Application

EP 05762757 A 20050621

Priority

  • US 2005022011 W 20050621
  • US 58178904 P 20040621

Abstract (en)

[origin: WO2006002207A2] A high phase order alternating current rotating machine is disclosed having an inverter drive that provides more than three phases of drive waveform of harmonic order H, and characterized in that the windings of the machine have a pitch of less than 180 rotational degrees. Preferably the windings are connected together in a mesh, star or delta connection. A method for operating a high phase order induction motor is also disclosed, involving electrically connecting N windings into a mesh connection with a value of ? that provides a substantial range in speed/torque relation when operating with at least two out of first, second and third harmonic, low order harmonics being the most efficient.

IPC 8 full level

H02P 27/04 (2006.01)

CPC (source: EP GB)

H02K 3/28 (2013.01 - EP GB); H02P 25/188 (2013.01 - EP); H02P 25/22 (2013.01 - EP GB); H02P 27/04 (2013.01 - GB); H02K 17/12 (2013.01 - EP); H02K 21/14 (2013.01 - EP); H02K 29/03 (2013.01 - EP)

Citation (search report)

See references of WO 2006002207A3

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2006002207 A2 20060105; WO 2006002207 A3 20061005; AU 2005258106 A1 20060105; EP 1805888 A2 20070711; GB 0701138 D0 20070228; GB 2430086 A 20070314; GB 2430086 B 20080130

DOCDB simple family (application)

US 2005022011 W 20050621; AU 2005258106 A 20050621; EP 05762757 A 20050621; GB 0701138 A 20070122