Electricity: motive power systems – Positional servo systems – With compensating features
Reexamination Certificate
2006-02-14
2006-02-14
Fletcher, Marlon T. (Department: 2837)
Electricity: motive power systems
Positional servo systems
With compensating features
C318S727000, C318S798000, C318S806000
Reexamination Certificate
active
06998811
ABSTRACT:
A method of compensation for current-sensor gain errors in an electric machine drive14includes a high frequency carrier signal electrically injected into the electric machine14.A current-sensor signal of the electric machine14is determined. The current-sensor signal is separated into current-sensor carrier signal negative and current-sensor carrier signal positive sequence reference frames. A proportional compensator signal for one of the current-sensor carrier signal reference frames is generated in a feedback loop24.A magnitude signal of another one of the current-sensor carrier signal reference frames is generated in a different feedback loop26.
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Degner Michael W.
Myers Garold P
Artz & Artz P.C.
Fletcher Marlon T.
Ford Global Technologies LLC
Hanze Carlos L.
Miller Patrick
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