AC power supply and method for controlling output current...

Details AC power supply and method for controlling output current... AC power supply and method for controlling output current...

2007-04-19

2009-12-15

Patel, Rajnikant B (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

C290S00100C

Reexamination Certificate

active

07633781

ABSTRACT:
An AC power supply and a method for dynamically controlling the output current thereof are disclosed. An output voltage stop signal is used to disable a DC/AC converter from outputting. During a period that the DC/AC converter stops its output, the output current of the DC/AC converter is measured and is fed back to a output current control device as an output current feedback signal to produce a deviation. Using the difference between the output current feedback signal of the DC/AC converter and the deviation, an approximate DC value of the output current of the DC/AC converter is calculated. With reference to the approximate DC value, the DC/AC converter can be controlled so that the DC current injection in the output current is approximately zero.

REFERENCES:
patent: 7063454 (2006-06-01), Murakami et al.

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