Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2008-04-10
2010-11-30
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S400010, C318S700000, C310S156010
Reexamination Certificate
active
07843155
ABSTRACT:
A permanent magnet rotor for use in a flux regulated permanent magnet brushless machine is constructed such that the inductance along the direct and quadrature axes is markedly different to provide sensorless position feedback for the rotor.
REFERENCES:
patent: 4139790 (1979-02-01), Steen
patent: RE32100 (1986-04-01), Rannenberg
patent: 4719378 (1988-01-01), Katsuma
patent: 4748360 (1988-05-01), Kawada et al.
patent: 4929021 (1990-05-01), Kaye
patent: 4942493 (1990-07-01), Rozman
patent: 5055764 (1991-10-01), Rozman
patent: 5144564 (1992-09-01), Naidu et al.
patent: 5363032 (1994-11-01), Hanson
patent: 5650706 (1997-07-01), Yamada
patent: 5844344 (1998-12-01), Uetake
patent: 5973432 (1999-10-01), Katagiri
patent: 6208110 (2001-03-01), O'Meara et al.
patent: 6661150 (2003-12-01), Utsumi
patent: 6734666 (2004-05-01), Voillat
patent: 6800977 (2004-10-01), Ostovic
patent: 7215059 (2007-05-01), Bitsche
patent: 2003/0233200 (2003-12-01), Petrovic et al.
patent: 61042248 (1986-02-01), None
patent: 0201872 (1986-11-01), None
patent: 2372885 (2002-09-01), None
patent: 11243653 (1999-09-01), None
patent: 11332277 (1999-11-01), None
European Search Report dated Jul. 3, 2009.
Gieras Jacek F.
Rozman Gregory I.
Carlson & Gaskey & Olds PC
Hamilton Sundstrand Corporation
Luo David S
Ro Bentsu
LandOfFree
Direct flux regulated permanent magnet brushless motor... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Direct flux regulated permanent magnet brushless motor..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct flux regulated permanent magnet brushless motor... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4188226