Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2007-11-16
2010-12-14
Benson, Walter (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S701000, C318S716000, C318S719000, C318S432000
Reexamination Certificate
active
07852040
ABSTRACT:
A motor driver system and its control methods are discussed. Even when a command magnetic flux decreases as a motor operates in a field weakening region, a current angle can be maintained always below a limit value, thereby obtaining the stability of the motor control.
REFERENCES:
patent: 6407531 (2002-06-01), Walters et al.
patent: 6429620 (2002-08-01), Nakazawa
patent: 6724168 (2004-04-01), Cheong et al.
patent: 6763622 (2004-07-01), Schulz et al.
patent: 7015667 (2006-03-01), Patel et al.
patent: 7023168 (2006-04-01), Patel et al.
patent: 2004/0070362 (2004-04-01), Patel et al.
Capecchi, et al. “Position Sensorless Control of Transverse-Laminated Synchronous Reluctance Motors” pp. 1766-1773 (2000).
Ahn Jun Ho
Lee Gil Su
Lee Kyung Hoon
Oh Jae Yoon
Won June Hee
Benson Walter
Birch & Stewart Kolasch & Birch, LLP
Dinh Thai
LG Electronics Inc.
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