Harmonic content determination apparatus

Details Harmonic content determination apparatus Harmonic content determination apparatus

1994-08-08

1996-09-24

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 96, 363 98, 363 41, 363132, H02M 748, H02M 112, H02M 5458

Patent

active

055596894

ABSTRACT:
An apparatus for determining a frequency component of a signal exploits the aliasing effect by sampling the signal at the frequency of the component (or an integer multiple thereof) to produce first and second sets of samples at the sampling frequency. Corresponding samples of the first and second sets of samples are separated in phase by substantially 90.degree.. The apparatus vectorially determines the magnitude and phase of the frequency component of the signal from the first and second sets of samples.

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patent: 4994956 (1991-02-01), Kirchberg, Jr. et al.
patent: 5001622 (1991-03-01), Kirchberg, Jr. et al.
patent: 5034876 (1991-07-01), Kirchberg, Jr. et al.
patent: 5043857 (1991-08-01), Kirchberg, Jr. et al.
patent: 5053939 (1991-10-01), Kirchberg, Jr. et al.

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