Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2011-05-31
2011-05-31
Colon-Santana, Eduardo (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S400010, C318S599000, C318S811000, C363S041000
Reexamination Certificate
active
07952310
ABSTRACT:
A controller of a multi-phase electric motor includes a drive section for driving the multi-phase electric motor, a single current detection section for detecting a current value of the multi-phase electric motor, a pulse width modulation signal (PWM) generation section for generating a PWM signal of each phase based on the current value detected by the current detection section and a saw-tooth signal having a predetermined frequency, a current detectability determination section for determining whether or not the current value is detectable in the current detection section based on the PWM signal of each phase generated by the PWM signal generation section, and a switching number determination section for determining whether or not conducting number of the upper arm switching element is an even number or an odd number based on the determination that the current is not detectable by the current detectability determination section.
REFERENCES:
patent: 6049474 (2000-04-01), Platnic
patent: 6667598 (2003-12-01), Shimohara
patent: 6735537 (2004-05-01), Liu et al.
patent: 6914409 (2005-07-01), Nukushina
patent: 7119530 (2006-10-01), Mir et al.
patent: 7193388 (2007-03-01), Skinner et al.
patent: 7339394 (2008-03-01), De Larminat et al.
patent: 7411369 (2008-08-01), Maeda et al.
patent: 7414425 (2008-08-01), O'Gorman et al.
patent: 2005/0226607 (2005-10-01), Williams et al.
patent: 2008/0231219 (2008-09-01), Mori et al.
patent: 2009/0134822 (2009-05-01), Hamasaki et al.
patent: 2009/0146590 (2009-06-01), Hamasaki
patent: 10-155278 (1998-06-01), None
patent: 2001-095279 (2001-04-01), None
patent: 2005-531270 (2005-10-01), None
patent: 2007-112416 (2007-05-01), None
patent: 20060103552 (2006-10-01), None
Espacenet abstract of Korean Publication No. KR 2006-0103552, Publication date Oct. 2, 2006 (1 page).
Colon-Santana Eduardo
Omron Corporation
Osha & Liang LLP
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