G - Physics – 05 – F
Patent
G - Physics
05
F
323/30
G05F 1/24 (2006.01)
Patent
CA 1073050
ABSTRACT OF THE DISCLOSURE The invention provides a voltage control arrangement for an electrical network comprising: a transformer provided with first and second windings, said first winding being adapted to be connected in series with said electrical network; a feedback circuit having an input adapted to be connected to a phase line of said electrical network, and an output for providing a control signal in response to a voltage parameter in said electrical network; and a variable impedance circuit having a pair of main terminals, and a control terminal for electrically varying the impedance of said circuit, said variable impedance circuit comprising a capacitor and an inductor connected in parallel, at least one of said inductor and said capacitor having an electrically variable impedance; the control terminal of said variable impedance circuit being connected to the output of said feedback unit, and the main terminals of said variable impedance circuit being connected in series with the second winding of said transformer and a voltage source, whereby said control signal varies the impedance of said impedance circuit and thereby induces a correcting voltage in said transformer in response to deviations of said voltage parameters.
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