Universal Power Converter
First Claim
1. A Buck-Boost Converter, comprising:
- an energy-transfer reactance;
first and second power portals, each with two or more ports by which electrical power is input from or output to said portals;
first and second bridge switch arrays interposed between said reactance and respective ones of said portals, and each comprising one bidirectional switching device for each said port of each said power portal.
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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.
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Citations
22 Claims
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1. A Buck-Boost Converter, comprising:
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an energy-transfer reactance;
first and second power portals, each with two or more ports by which electrical power is input from or output to said portals;
first and second bridge switch arrays interposed between said reactance and respective ones of said portals, and each comprising one bidirectional switching device for each said port of each said power portal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A Buck-Boost Converter, comprising:
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an energy-transfer reactance;
a first bridge switch array comprising at least two bidirectional switching devices which are jointly connected to operatively connect at least one terminal of said reactance to a power input, with reversible polarity of connection;
a second bridge switch array comprising at least two bidirectional switching devices which are jointly connected to operatively connect at least one terminal of said reactance to a power output, with reversible polarity of connection;
wherein said first switch array drives said reactance with a nonsinusoidal voltage waveform. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. (canceled)
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19. A Full-Bridge Buck-Boost Converter, comprising:
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first and second full bridge switch arrays, each comprising at least four bidirectional switching devices;
a substantially parallel inductor-capacitor combination symmetrically connected to be driven separately by either said switch array;
one of said switch arrays being operatively connected to a power input, and the other thereof being operatively connected to supply a power output. - View Dependent Claims (20, 21)
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22-80. -80. (canceled)
Specification