Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent
1996-01-25
1997-01-28
Wong, Peter S.
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
363 37, 363 47, 363 98, 363132, H02J 300
Patent
active
055983260
ABSTRACT:
A high frequency AC/AC converter apparatus with power factor correction includes an AC/DC converter circuit part to provide power factor correction and a DC/AC inverter circuit part to produce a high frequency AC signal for operation of a load, for example, a discharge lamp. The AC/DC converter circuit part includes a diode and an inductor. The converter apparatus utilizes first and second semiconductor controlled switching devices, one of which is common to each part of the overall converter apparatus. A single control circuit controls both parts of the converter apparatus by controlling the switching of the first and second semiconductor switching devices. There are two possible control techniques, constant duty ratio control or duty ratio sweeping control. A voltage clamp circuit inhibits undesired oscillation of the diode voltage.
REFERENCES:
patent: 4564897 (1986-01-01), Okamoto et al.
patent: 4729088 (1988-03-01), Wong
patent: 5063490 (1991-11-01), Maehara et al.
patent: 5173847 (1992-12-01), Susuki
patent: 5182702 (1993-01-01), Hiramatsu et al.
patent: 5264782 (1993-11-01), Newton
patent: 5408403 (1995-04-01), Nerone et al.
Gu Wen-Jian
Liu Rui
Berhane Adolf
Franzblau Bernard
Philips Electronics North America
Wong Peter S.
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