Electricity: motive power systems – Synchronous motor systems – Field winding circuits
Reexamination Certificate
2007-06-07
2008-10-21
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Field winding circuits
C318S700000, C318S811000
Reexamination Certificate
active
07439703
ABSTRACT:
A controller for a synchronous machine includes: a power converter; a synchronous machine driven by the power converter; a PWM modulation section for controlling the synchronous machine; a current detection section which detects a current conducted to the synchronous machine; a voltage detection section which detects a voltage applied to the synchronous machine; a current variation operation section which operates a current variation during a time interval between timings synchronized with detection sampling in the current detection section; a voltage integration operation section which operates a voltage integration value during a time interval between the same timings as the timings in the current variation operation section; a current variation operation section for a time interval in which all sets are included, defining, as one set, the current variation and the voltage integration value, and operating a current variation during the time interval in which all the sets are included; a voltage integration operation section for the time interval in which all the sets are included, integrating a voltage during the same time interval as the time interval in the current variation section for the time interval in which all the sets are included; and a rotation phase angle assumption section which assumes a rotation phase angle of the synchronous machine.
REFERENCES:
patent: 08-205578 (1996-08-01), None
K. Yasui et al., U.S. PTO Notice of Allowance and Fee(s) Due, U.S. Appl. No. 11/808,193, Jun. 9, 2008, 10 pages.
Suzuki Kentaro
Yasui Kazuya
Yuuki Kazuaki
Donovan Lincoln
Foley & Lardner LLP
Glass Erick
Kabushiki Kaisha Toshiba
LandOfFree
Controller for synchronous machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Controller for synchronous machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controller for synchronous machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4013758