Motor control

Details Motor control Motor control

2007-04-17

2011-12-06

Benson, Walter (Department: 2837)

Electricity: motive power systems

Armature circuit control

Voltage control

C318S494000, C318S599000, C318S606000, C318S607000, C318S608000

Reexamination Certificate

active

08072171

ABSTRACT:
A method of controlling a current of a three-phase electric motor with a three-phase controller. The firing angles are adjusted so as to leave a range of firing angles in which DC components appear.

REFERENCES:
patent: 5383107 (1995-01-01), Hopkins et al.
patent: 5504667 (1996-04-01), Tanaka et al.
patent: 6542390 (2003-04-01), Bixel
patent: 6930459 (2005-08-01), Fritsch et al.
patent: 2403855 (2005-01-01), None
patent: WO-97/29541 (1997-08-01), None
patent: WO-01/48903 (2001-07-01), None
PCT/IB/373—International Preliminary Report on Patentability—Oct. 28, 2008.
PCT/ISA/237—Written Opinion of the International Searching Authority—Jul. 6, 2007.
PCT/ISA/210—International Search Report—Jul. 6, 2007.

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