Circuit for compensating harmonic currents in an electric consum

Details Circuit for compensating harmonic currents in an electric consum Circuit for compensating harmonic currents in an electric consum

1978-03-30

1980-06-24

Smith, Alfred E.

Wave transmission lines and networks

Automatically controlled systems

Impedance matching

307105, 333176, 333180, 333181, H03H 710, H03H 724, H02J 102

Patent

active

042097576

ABSTRACT:
To improve the effect of a filter circuit for the harmonics, which contains an L-C-R series resonant circuit in at least one loop, a variable supplementary current excitation which compensates the residual harmonic current in the consumer arrangement at least approximately, is coupled into the series resonant circuit, the supplementary current excitation preferably being supplied by a compensation transformer which is controlled by the current in the loop, the compensation transformer being excited by a source and controlled by an auxiliary transformer arranged in the loop.

REFERENCES:
patent: 2825024 (1958-02-01), Berghoff
patent: 2959738 (1960-11-01), Nagai
patent: 3351849 (1967-11-01), Mesenhimer
patent: 3435331 (1969-03-01), Bixby

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