Obtaining a selected frequency component in rectangular coordina

Details Obtaining a selected frequency component in rectangular coordina Obtaining a selected frequency component in rectangular coordina

1988-01-27

1989-03-21

Kemeny, Emanuel S.

Boots, shoes, and leggings

364483, 364492, 324 77R, G01R 2106, G01R 2300

Patent

active

048150029

ABSTRACT:
In polyphase systems with a set of waveforms, such as a three-phase power system, each waveform is Fourier analyzed for a frequency component: A single sample/hold circuit samples each waveform sequentially, and the sampling time difference is compensated by adjusting the sampled values to a common time-point, using vector rectangular coordinate sine/cosine processing.

REFERENCES:
patent: 4581705 (1986-04-01), Gilker et al.
patent: 4672501 (1987-06-01), Bilac et al.
patent: 4730257 (1988-03-01), Szeto
IEE Tutorial Course, Computer Relaying; Chapters III-V, 1979.

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