Motor control unit

Details Motor control unit Motor control unit

2006-10-24

2006-10-24

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

C318S807000, C318S606000, C318S811000, C318S599000, C318S254100

Reexamination Certificate

active

07126306

ABSTRACT:
Windings of each phase in a three-phase AC motor are independent of one another. A motor control unit gives, to windings of each phase (U, V and W-phase), currents (IU, IV, IW) obtained by adding, to a fundamental sine wave current, a current having a frequency which is three times as high as that of the fundamental sine wave current. That is,in-line-formulae description="In-line Formulae" end="lead"?IU=I·sin ωt+Ia·sin 3ωt:in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?IV=I·sin(ωt+2/3π)+Ia·sin 3ωt:in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?IW=I·sin(ωt+4/3π)+Ia·sin 3ωtin-line-formulae description="In-line Formulae" end="tail"?Also, amplitude Ia of a current having a frequency which is three times as high as that of the fundamental sine wave current is set to a predetermined value smaller than amplitude I of the fundamental sine wave current.

REFERENCES:
patent: 2437093 (1948-03-01), Huge
patent: 3763417 (1973-10-01), Johnston
patent: 4882524 (1989-11-01), Lee
patent: 5173651 (1992-12-01), Buckley et al.
patent: 5227963 (1993-07-01), Schauder
patent: 5747972 (1998-05-01), Baretich et al.
patent: 5786673 (1998-07-01), Johnson
patent: 6005364 (1999-12-01), Acarnley
patent: 6229288 (2001-05-01), Baretich et al.
patent: 6288507 (2001-09-01), Makino et al.
patent: 6366062 (2002-04-01), Baretich et al.
patent: 6404152 (2002-06-01), Kobayashi et al.
patent: 6636008 (2003-10-01), Yamada et al.
patent: 6700343 (2004-03-01), Masaki et al.
patent: 6731083 (2004-05-01), Marcinkiewicz
patent: 2002/0163319 (2002-11-01), Kaneko et al.
patent: 2004/0178764 (2004-09-01), Kaku et al.
patent: 2005/0127857 (2005-06-01), Miyauchi
patent: 55-023717 (1980-02-01), None
patent: 6-098596 (1994-04-01), None
patent: 6-133558 (1994-05-01), None
patent: 06-133558 (1994-05-01), None
patent: 11-069899 (1999-03-01), None
patent: 2004-080975 (2004-03-01), None
Notice of Grounds of Rejection (Office Action) for corresponding Japanese Appln. No. 2003-146595 dated Jun. 7, 2005.

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