Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1996-08-27
1998-04-21
Berhane, Adolf
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363133, 417417, H02M 3335, F04B 1704
Patent
active
057424926
ABSTRACT:
In a method of driving vibrating compressors having such a construction that a-c voltage is fed to a vibrating compressor by converting d-c voltage into a-c voltage with two MOS-FETs, the two MOS-FETs as switching elements are driven to convert d-c voltage into a-c voltage by changing the ON time of each of the MOS-FETs corresponding to suction and compression strokes in one cycle of the vibrating compressor to improve the operating efficiency of the vibrating compressor. To this end, suction and compression time in one cycle of the vibrating compressor is changed by means of a timer IC.
REFERENCES:
patent: 4320448 (1982-03-01), Okuda et al.
patent: 4632645 (1986-12-01), Kawakami et al.
patent: 4706470 (1987-11-01), Akazawa et al.
patent: 5656896 (1997-08-01), Ogiwara et al.
Akazawa Naoki
Namai Masao
Berhane Adolf
Sawafuji Electric Co. Ltd.
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