Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2006-09-19
2006-09-19
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C363S041000, C363S071000
Reexamination Certificate
active
07109681
ABSTRACT:
An improved motor controller for driving polyphase alternating current dynamoelectric machines from a direct current power source that employs two inverter bridges controlled with a state vector modulation symmetrical state sequence that has a desired “chop” frequency so that each of their outputs produce a fundamental component that is exactly in phase but chop frequency components that are exactly 180 degrees out of phase with each other, with their outputs combined through respective interphase transformers to average the potentials of the chop frequency components.
REFERENCES:
patent: 5012177 (1991-04-01), Dhyanchand et al.
patent: 5142468 (1992-08-01), Nerem
patent: 5434771 (1995-07-01), Danby et al.
patent: 5657214 (1997-08-01), Nguyen et al.
patent: 6370049 (2002-04-01), Heikkil.ang.
patent: 2004/0071003 (2004-04-01), Cocconi
Sedra/Smith; “Microelectronic Circuits”, Oxford University Press, 1998. p. 202 shows a filter circuit for a power supply.
The Radio Amateur's Handbook, Fifty-First Edition, 1974. p. 115 shows “Capacitive-Input Filters”.
Baker Donal E.
Mehl Byron R.
Hamilton Sundstrand Corporation
Mican Stephen G.
Ro Bentsu
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