Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2011-04-26
2011-04-26
Masih, Karen (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S727000, C318S375000
Reexamination Certificate
active
07932685
ABSTRACT:
The control apparatus for a power conversion apparatus having chopper circuits and a capacitor, each of which includes a switching circuit and a coil, the switching circuit being on/off-controlled in accordance with specific timings determined in accordance with a current flowing through the coil to create required voltage in the capacitor, includes a function of evenly dividing an interval between adjacent specific timings of one of the chopper circuits to produce divided timings to be allocated to the other chopper circuits, and a function of setting, for each of the other chopper circuits, an on-time period of the switching circuit such that, when the interval varies as a result of which the specific timing of each of the other chopper circuits deviates from a corresponding one of the divided timings, an interval between adjacent specific timings of each of the other chopper circuits is varied to reduce the deviation.
REFERENCES:
patent: 2010/0308027 (2010-12-01), Vogel
patent: 2350244 (2000-11-01), None
patent: 2000-358363 (2000-12-01), None
patent: 2000-358364 (2000-12-01), None
patent: 2000-358368 (2000-12-01), None
patent: 2004-357388 (2004-12-01), None
patent: 2006-340442 (2006-12-01), None
patent: 2007-116834 (2007-05-01), None
Arimura Seikoh
Kimura Tomonori
Denso Corporation
Masih Karen
Nixon & Vanderhye PC
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