Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2005-01-05
2008-11-11
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S825000
Reexamination Certificate
active
07449860
ABSTRACT:
A method and apparatus for deriving phase voltage control signals for use in controlling current flow to an induction motor. The method may comprise obtaining an error term; converting the error term into a commanded voltage value; transforming the commanded voltage value into a commanded voltage vector; and converting the commanded voltage vector into the phase voltage control signals via pulse width modulation control. The apparatus may comprise a Park vector converter for converting a first stator phase measurement and a second stator phase measurement into a stator phase current vector; a scalar operator for obtaining a stator phase current value; a summer for obtaining an error term; an error converter for converting the error term into a commanded voltage value; a voltage transformer for transforming the commanded voltage value into a commanded voltage vector, and pulse width modulation control for converting the commanded voltage vector into the phase voltage control signals.
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Huggett Colin
Sarlioglu Bulent
Caglar Esq. Oral
Honeywell International , Inc.
Luo David S
Ro Bentsu
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