Combination current hysteresis and voltage hysteresis...

Details Combination current hysteresis and voltage hysteresis... Combination current hysteresis and voltage hysteresis...

2004-08-31

2008-08-26

Sherry, Michael J (Department: 2836)

Electrical transmission or interconnection systems

Plural load circuit systems

Plural sources of supply

C307S029000, C307S075000, C361S092000, C363S095000

Reexamination Certificate

active

07417336

ABSTRACT:
Consistent with an aspect of the present disclosure, a method is provided for controlling an AC signal, which is supplied to a load and selectively supplied to a utility grid. In response to a fault in the utility grid, the method includes decoupling the AC signal from the utility grid, and determining whether a voltage associated with the AC signal is within a desired band. The method also includes adjusting the voltage associated with the AC signal when the AC signal is outside the desired band, and comparing a magnitude of a current associated with the AC signal with a desired current value to thereby obtain a comparison result. In response to the comparison result, the current associated with the AC signal is adjusted when the voltage associated with the AC signal is within the desired band.

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