Multiple input DC-DC power converter
First Claim
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1. A buck-boost converter for converting a plurality of dc input voltages from a plurality of voltage sources to at least one dc output voltage, the converter comprising:
- a plurality of voltage inputs;
a switch in an electrical path from each of said voltage inputs for conducting current from and blocking current to said voltage inputs;
a magnetically inductive device in an electrical path from each of said switches; and
a voltage output bucked or boosted relative to one of said voltage inputs in an electrical path from said magnetically inductive device.
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Abstract
Apparatuses and methods for converting a plurality of dc input voltages from a plurality of voltage sources to at least one dc output voltage. An apparatus embodiment includes a plurality of voltage inputs. A respective current-conducting-bidirectional-voltage-blocking switch is in an electrical path from each of the voltage inputs. A magnetically inductive device is in an electrical path from each of the current-conducting-bidirectional-voltage-blocking switches. A voltage output is in an electrical path from the magnetically inductive device.
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Citations
34 Claims
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1. A buck-boost converter for converting a plurality of dc input voltages from a plurality of voltage sources to at least one dc output voltage, the converter comprising:
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a plurality of voltage inputs; a switch in an electrical path from each of said voltage inputs for conducting current from and blocking current to said voltage inputs; a magnetically inductive device in an electrical path from each of said switches; and a voltage output bucked or boosted relative to one of said voltage inputs in an electrical path from said magnetically inductive device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A buck-boost converter for providing dc power from more than one source to at least one load, comprising:
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a magnetically inductive device; a plurality of inputs for respective sources in parallel through respective switches for conducting current from and blocking current to said inputs, to said magnetically inductive device; and at least one output bucked or boosted relative to one of said inputs for at least one load in parallel with a capacitor, said capacitor being in series with a diode connected to said magnetically inductive device. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A buck-boost system for supplying power to a load from a plurality of sources, the system comprising:
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a plurality of sources; a respective voltage input in an electrical path from each of said plurality of sources; a switch in an electrical path from each of said voltage inputs for conducting current front and blocking current to said voltage inputs; input control circuitry in an electrical path to each of said switches for controlling switching of said switches; a magnetically inductive device in an electrical path from each of said current-conducting-bidirectional-voltage-blocking switches; and a voltage output bucked or boosted relative to one of said voltage inputs in an electrical path from said magnetically inductive device. - View Dependent Claims (24)
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25. A buck-boost for substantially equalizing the charges of a plurality of rechargeable voltage sources, the system comprising:
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a plurality of rechargeable voltage sources arranged serially in an electrical path; respective voltage inputs in respective electrical paths to all excepting at least one of said rechargeable voltage sources; respective current-conducting-bidirectional-voltage-blocking switches in respective electrical paths to said all excepting at least one of said plurality of rechargeable voltage sources; a magnetically inductive device in an electrical path with said current-conducting-bidirectional-voltage blocking switches; an output comprising a voltage output and a current output, said voltage output being bucked or boosted relative to one of said voltage inputs and in parallel with a capacitor in series with a diode to said magnetically inductive device; wherein said current output is fed back to a rechargeable voltage source that is not comprised in said all excepting at least one of said rechargeable voltage sources. - View Dependent Claims (26)
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27. A method for selectively connecting a plurality of voltage input sources that are in an electrical connection to a magnetically inductive device, the magnetically inductive device being in an electrical path to at least one load, the method comprising:
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inserting a switch in the electrical path from each of the voltage input sources for conducting current from and blocking current to the voltage input sources; and applying a control signal to select one or more of said switches to allow current to flow through said selected one or more switches to the magnetically inductive device from the plurality of voltage input sources corresponding to the selected one or more switches. - View Dependent Claims (28, 29, 30, 31, 32)
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33. An apparatus for converting a plurality of dc input voltages from a plurality of voltage sources to at least one dc output voltage, the apparatus comprising:
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a plurality of voltage inputs; a switch in an electrical path from each of said voltage inputs for conducting current from and blocking current to said voltage inputs; a magnetically inductive device in a common electrical path shared by each of said switches; and a voltage output in an electrical path from said magnetically inductive device. - View Dependent Claims (34)
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Specification