Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2007-02-13
2009-10-06
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
Reexamination Certificate
active
07599197
ABSTRACT:
A rectifying circuit (18) converts inputted AC power to DC power. An inverter circuit (22) converts the DC power to high-frequency power in accordance with a switching control signal applied thereto from a control circuit (50). A voltage transformer (24) voltage-transforms the voltage of the high-frequency power. An output-side rectifying circuit (40) rectifies the voltage-transformed power. An output detecting circuit (34) detects the magnitude of the voltage of the rectified power, and a signal representative of the detected voltage is applied to the control circuit (50). The control circuit (50) generates such a switching control signal as to make the rectified power have a predetermined value. The value of the voltage from the rectifying circuit (18) is detected by an input detecting circuit (62), and a signal representative of the detected voltage is applied to the control circuit (50). The control circuit (50) controls the operation of the inverter circuit (22) in accordance with the detected voltage representative signal from the input detecting circuit (62) and the saturation magnetic characteristic of the voltage-transformer (24).
REFERENCES:
patent: 4472672 (1984-09-01), Pacholok
patent: 4816982 (1989-03-01), Severinsky
patent: 4943902 (1990-07-01), Severinsky
patent: 4974141 (1990-11-01), Severinsky et al.
patent: 6600670 (2003-07-01), Morita et al.
patent: 05-111244 (1993-04-01), None
Danjo Kenzo
Ikeda Tetsuro
Ishii Hideo
Berhane Adolf
Duane Morris LLP
Mehari Yemane
Sansha Electric Manufacturing Company Limited
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