Direct current link circuit
First Claim
1. A method for converting power from a floating source of direct current (DC) power to a dual direct current (DC) output, wherein the floating source of DC power includes a positive input terminal and a negative input terminal, the dual DC output includes a positive output terminal, a negative output terminal and a ground terminal, the method including:
- charging a charge storage device connected in parallel to the positive input terminal and the negative input terminal; and
discharging the charge storage device by first switching the negative input terminal through a resonant circuit to the negative output terminal during a first half of a period of the resonant circuit and second switching the positive input terminal through the resonant circuit to the positive output terminal during a second half of the period of the resonant circuit.
3 Assignments
0 Petitions
Accused Products
Abstract
A device for converting power from a floating source of DC power to a dual direct current (DC) output, the device includes: positive and negative input terminals connectible to the floating source of DC power; and positive and negative, and ground output terminals connectible to the dual DC output that may feed an inverter. The inverter may be either a two or three level inverter. A charge storage device may be connected in parallel to, and charged from, the positive and negative input terminals. A resonant circuit may be also connected between the charge storage device and the dual DC output. The resonant circuit may include an inductor connected in series with a capacitor. The charge storage device may discharge through the resonant circuit by switching through to either the negative output terminal or the positive output terminal.
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Citations
22 Claims
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1. A method for converting power from a floating source of direct current (DC) power to a dual direct current (DC) output, wherein the floating source of DC power includes a positive input terminal and a negative input terminal, the dual DC output includes a positive output terminal, a negative output terminal and a ground terminal, the method including:
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charging a charge storage device connected in parallel to the positive input terminal and the negative input terminal; and discharging the charge storage device by first switching the negative input terminal through a resonant circuit to the negative output terminal during a first half of a period of the resonant circuit and second switching the positive input terminal through the resonant circuit to the positive output terminal during a second half of the period of the resonant circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for converting power from a floating source of DC power to a dual direct current (DC) output, the device including:
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a positive input terminal and a negative input terminal connectible to the floating source of DC power; a positive output terminal, a negative output terminal and a ground terminal connectible to the dual DC output; a charge storage device connected in parallel to the positive input terminal and the negative input terminal;
wherein said charge storage device is charged from the positive input terminal and the negative input terminal;a resonant circuit connected between the charge storage device and the dual DC output, wherein said charge storage device is adapted to discharge through said resonant circuit by switching through to selectively either the negative output terminal or the positive output terminal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification