Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1999-07-23
2000-05-30
Han, Jessica
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363131, H02M 3335
Patent
active
060698047
ABSTRACT:
A multi-output, multi-directional power converter has an input bi-directional switch and at least a first output bi-directional switch, a coupled inductor having an input winding and at least one output winding. The coupled inductor input winding is connected in series with the input voltage source and an input bi-directional switch. Each coupled inductor output winding is connected in series with a corresponding output voltage source such as a capacitor and its respective output bi-directional switch. A clock circuit provides a first and second control signal. Each control signal has a first and second state. The second control signal has a state that is the complement of the first control signal. The first control signal is connected to the input bi-directional switch control terminal and the second control signal is connected to each respective output bi-directional switch control terminal. The input bi-directional switch is driven into a conductive state in response to the first control signal being in a first state and into a non-conductive state in response to the second control signal being in a second state. Each respective output bi-directional switch conduction channel is driven into a conductive state in response to the second control signal being in a first state and into a non-conductive state in response to the second control signal being in a second state. In an alternative embodiment, a resonant transition control means senses the coupled inductor input and output winding currents and the output voltage and adjusts the clock frequency to provide operation in a resonant transition mode.
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Article, by C. P. Henze, H. C. Martin and D. W. Parsley Zero-Voltage Switching in High Frequency Power Converters using Pulse Width Modulation APEC Record, Feb. 1-5, 1988, pp. 33-41; Published Sep. 1988, by IEEE as IEEE Publication, CH2504-9/88/0000 $1.00 pp. 33 through 40.
Beecroft John W.
Ingman Thomas M.
Mullett Charles E.
Condor D.C. Power Supplies Inc.
Han Jessica
Kirk James F.
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