Electrical transmission or interconnection systems – Plural supply circuits or sources – One source floats across or compensates for other source
Reexamination Certificate
2006-02-22
2010-10-26
Fureman, Jared J (Department: 2836)
Electrical transmission or interconnection systems
Plural supply circuits or sources
One source floats across or compensates for other source
C307S044000, C307S045000, C307S046000, C307S048000
Reexamination Certificate
active
07821157
ABSTRACT:
The invention relates to a method and device for injecting current during a mains supply voltage dip. The inventive method consists in permanently monitoring the magnitude and phase of the mains supply voltage and, upon detection of a voltage dip, injecting reactive current in the affected main supply phase(s) in a manner that can vary over the duration of the voltage dip, at very short intervals, proportionally to the magnitude of the dip, thereby absorbing the necessary active current. The device comprises a voltage measurement switch, a transformer (low voltage/medium voltage), a DC/AC inverter, a capacitor, a voltage dip detection circuit, and a control circuit.
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Llorente Gonzelez Jose Ignacio
Visiers Guixot Manuel
Fureman Jared J
Gamesa Innovation and Technology S.L.
Kaplan Hal I
Ladas & Parry LLP
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