Universal Power Converter
9 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems for transforming electric power between two or more portals. Any or all portals can be DC, single phase AC, or multi-phase AC. Conversion is accomplished by a plurality of bi-directional conducting and blocking semiconductor switches which alternately connect an inductor and parallel capacitor between said portals, such that energy is transferred into the inductor from one or more input portals and/or phases, then the energy is transferred out of the inductor to one or more output portals and/or phases, with said parallel capacitor facilitating “soft” turn-off, and with any excess inductor energy being returned back to the input. Soft turn-on and reverse recovery is also facilitated. Said bi-directional switches allow for two power transfers per inductor/capacitor cycle, thereby maximizing inductor/capacitor utilization as well as providing for optimum converter operation with high input/output voltage ratios. Control means coordinate the switches to accomplish the desired power transfers.
11 Citations
51 Claims
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1-39. -39. (canceled)
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40. A power converter, comprising:
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an energy-transfer reactance comprising at least one inductor; an input switch array configured to drive AC current through said reactance; and an output network connected to extract energy from said reactance; wherein said input switch array performs at least two drive operations, in the same direction but from different sources, during a single half-cycle of said reactance. - View Dependent Claims (41, 42)
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43. A power converter, comprising:
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an energy-transfer reactance comprising at least one inductor, and operating at a primary AC magnetic field frequency which is less than half of the reactance'"'"'s resonant frequency; an input switch array configured to drive AC current through said reactance; and an output network switch array connected to extract energy from said reactance; wherein said input switch array performs at least two drive operations, in the same direction but from different sources, during a single half-cycle of said reactance. - View Dependent Claims (44)
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45. The converter of claim, wherein said reactance comprises a transformer.
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46. A power converter, comprising:
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an energy-transfer reactance comprising at least one inductor, and operating at a primary AC magnetic field frequency which is less than half of the reactance'"'"'s resonant frequency; an input switch array configured to drive current through said reactance; and
an output switch array to extract energy from said reactance;wherein said input switch array performs at least two different drive operations at different times during a single cycle of said reactance, and wherein said output switch array performs at least two different drive operations at different times during a single cycle of said reactance. - View Dependent Claims (47, 48, 49, 50)
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51-80. -80. (canceled)
Specification