Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1977-02-03
1977-08-09
Shoop, William M.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
307 91, 307150, 336 84, H02M 322
Patent
active
040413640
ABSTRACT:
Electromagnetic interference shields are connected to electrical reference points from specially selected null or "center tap" connection points where noise voltages induced in the surface of the electromagnetic shield are substantially balanced out such that injection of such induced interference noise voltages to the connected reference points are substantially reduced. Special selection of isolated reference points for the input and output circuits as well as a special combination of electromagnetic interference shields substantially reduces the electromagnetic interference emanations from an electrical power supply circuit incorporating an inverter and transformer windings therewithin which normally constitute sources of unwanted electromagnetic interference signals unless suppressed.
REFERENCES:
patent: 792248 (1905-06-01), Campbell
patent: 2364260 (1944-12-01), Winkler
patent: 2896096 (1959-07-01), Schwarzer
patent: 2914719 (1959-11-01), Walton et al.
patent: 3244960 (1966-04-01), Stevens et al.
patent: 3517361 (1970-06-01), Reifel et al.
patent: 3522509 (1970-08-01), Hasenbalg
patent: 3582754 (1971-06-01), Hoffmann
Cohen Joseph T.
General Electric Company
Shoop William M.
Squillaro Jerome C.
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