Inverter input/output filter system

Details Inverter input/output filter system Inverter input/output filter system

1989-09-12

1990-10-30

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

307105, 333175, 363 40, 363 47, H02M 112, H02M 114, H02M 542

Patent

active

049673343

ABSTRACT:
A filter system for removing selected frequencies from AC power provided on at least two phase lines and a neutral line includes a phase-to-phase filter for removing a first selected AC component at a first frequency from the AC power wherein the frequency component has a line-to-phase displacement within first or second ranges. A phase-to-neutral filter is also provided for removing a second selected AC component at a second frequency different from the first frequency from the AC power wherein the second frequency component has a line-to-line phase displacement outside of the first and second ranges.

REFERENCES:
patent: 2241832 (1941-05-01), Wahlquist
patent: 3461372 (1966-01-01), Pickup et al.
patent: 3681612 (1972-08-01), Vogl et al.
patent: 3746963 (1973-07-01), VeNard, II
patent: 4760231 (1988-07-01), Hayashi
patent: 4862341 (1989-08-01), Cook

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