Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1989-07-26
1990-05-08
Wong, Peter S.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363126, 323222, H02M 706
Patent
active
049243721
ABSTRACT:
A single phase rectifier circuit produces a full wave rectified voltage by rectifying an AC input voltage, couples the rectified voltage to a filter capacitor through an inductor, and repeatedly switches the sum of the rectified voltage and the voltage on the capacitor across the inductor, thereby reducing input current distortion and improving the power factor of the circuit. When the rectified voltage is of a sufficient magnitude to drive current through the inductor, switching of the capacitor voltage across the inductor can be eliminated. The switching function is performed by a half bridge boost converter.
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Hall, Brad, "Correct Power Factor in Switched Mode Power Supplies," in Electronic Design, Oct. 27, 1988.
Fox David A.
Stechschulte David L.
Lenart R. P.
Westinghouse Electric Corp.
Wong Peter S.
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