Electric power conversion systems – Current conversion – Having plural converters for single conversion
Patent
1996-05-28
1997-10-28
Berhane, Adolf
Electric power conversion systems
Current conversion
Having plural converters for single conversion
363 20, 363 40, 307 82, H02M 300
Patent
active
056823037
ABSTRACT:
A high-power, switched-mode power conversion array having an input capacitance, an output capacitance, and a multiple, reconfigurable converter cells. Each of the converter cells convert an input voltage to an output voltage using switched-mode power conversion. The converter cells operate at a conversion frequency and are phase-shifted across one conversion period, so that each converter is switched ON in a time-overlapping relationship with at least one other one of the plurality of converters. As a result, the input and output current and the voltage ripple are substantially reduced, the ripple frequency of the array is increased, and the power capacity is increased. The converter cells can have a selectable conversion frequency, and thus, a selectable period. The apparatus also can include a programmable interconnection network selectably and reconfigurably connecting each cell to at least one other cell, an input node, or an output node, using serial or parallel connections. The programmable interconnection network can consist of an interconnection switch array, that include programmable elements. Selected programmable elements are connected with respective ones of the plurality of converter cells. The array can be dynamically-adaptive and be reconfigured to adapt to the preselected criterion on-the-fly. The array can also be a thin-profile array having an array aspect ratio of greater than 30.
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Berhane Adolf
International PowerSystems
LandOfFree
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