Filtering device comprising a control circuit and an electrical

Details Filtering device comprising a control circuit and an electrical Filtering device comprising a control circuit and an electrical

1998-07-24

2000-10-31

Zweizig, Jeffrey

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

363 39, H03B 100

Patent

active

061408662

ABSTRACT:
The filtering device comprises at least one passive filtering cell controlled by an electronic switch and a control device. Said control device receives a signal representative of an electrical quantity of an electrical distribution line for example a load current. Then a processing circuit of the control circuit extracts a signal representative of a harmonic frequency to be eliminated from said electrical quantity and controls a generator generating control signals of said switch. Said signals control closing or opening of the switch at a mean frequency appreciably equal to the frequency of the harmonic to be eliminated or attenuated.

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"Effects of Harmonic Distortion of the Supply Voltage on the Optimum Performance of a Thyristor Controlled Reactor-Type Compensator;" Gutierrez J. et al.; ICEE Proceedings: Science, Measurement and Technology, vol. 141, No. 1; Jan. 1, 1994. pp. 15-19, XP000426401, *the entire document*.

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