Method for determining RMS values for grid-linked converters

Details Method for determining RMS values for grid-linked converters Method for determining RMS values for grid-linked converters

2006-07-04

2006-07-04

Nguyen, Matthew V. (Department: 2838)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Exponential

C363S015000

Reexamination Certificate

active

07071759

ABSTRACT:
Techniques for determining root mean square (RMS) values of a signal for controlling operation of grid-linked converters, such as DC-to-AC inverters, via squaring the signal, sampling the squared signal n times during a cycle period to obtain n samples, summing the first n−1 samples to obtain a first value, multiplying the first value by a sampling time and a frequency of the signal to obtain a second value, determining a compensation factor, adding the compensation factor to the second value to obtain a third value, and determining a square root of the third value to obtain a RMS result.

REFERENCES:
patent: 4274143 (1981-06-01), Brodie et al.
patent: 5896056 (1999-04-01), Glucina
patent: 6411072 (2002-06-01), Feldman
patent: 6765516 (2004-07-01), Coley et al.
patent: 6794881 (2004-09-01), Reichel et al.
U.S. Appl. No. 60/469,073, filed May 7, 2003, Tuladhar.
U.S. Appl. No. 60/470,543, filed May 9, 2003, Tuladhar.

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